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Factory speakers in your Subaru Crosstrek struggle against road noise. Highs get lost. Bass lacks punch. 2017 subaru crosstrek kicker speaker system upgrades change that quick. Kicker and Subaru teamed up on kits like H631SFJ101 tweeters. They sharpen high-frequency response. Stereo imaging pops beyond stock levels. Our research compared driver specs across these options. We focused on fit for 2013-2017 Crosstrek models. Real drivers notice clearer vocals on highways now.

CS Series coaxials from Kicker hit all frequencies with high sensitivity. Ultra-clean bass comes without mud. 300 watts max power per pair handles volume spikes. Plug-and-play install skips cutting. Adapters and harnesses match exact. Owners swap stock for these and hear wider soundstage. It’s night and day on long drives. Check Kicker CS65 coaxial speakers for similar door fits. Or see Kicker Comp car speakers for more power options. These picks solve weak audio in tight cabins.

Top Products

1
Best Seller

Subaru Kicker H631SFJ001 Speaker Upgrade Kit

Subaru
9.7 /10
MXJS Score
MXJS Score is calculated based on product ratings, reviews, and sales performance to help you make informed purchasing decisions. Learn more ›
Updated: May 2, 2026
Last update on May 2, 2026 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API.
This Kicker Subaru speaker kit boosts high-frequency response and stereo imaging over stock speakers for clearer, more immersive car audio. Best for Subaru Impreza, WRX STI, and Crosstrek owners wanting factory-style upgrades.
Pros & Cons

Pros

  • Perfect OEM compatibility for select Subaru models
  • Noticeable boost in highs and imaging over factory speakers
  • High-quality Kicker engineering for reliable performance
  • Seamless upgrade maintains vehicle warranty
  • Coaxial design simplifies front-door speaker replacement

Cons

  • Model-specific fit limits broader Subaru compatibility
  • Focuses on highs without dedicated bass enhancement
  • Professional installation recommended for best results
Detailed Review

This genuine Subaru speaker upgrade kit, H631SFJ001 by Kicker, is an OEM solution for elevating car audio in select models like 2012-2022 Impreza, WRX STI, and Crosstrek. It replaces stock speakers with coaxial units that deliver superior high-frequency response and enhanced stereo imaging, creating a more engaging listening experience right from the factory setup.

Ideal for daily commuters, rally enthusiasts, and Subaru owners tired of muddled stock sound, this kit installs directly into door panels without cutting or wiring hassles. Real-world drives reveal sharper details in podcasts, rock tracks, and podcasts, making long highway hauls far more enjoyable.

Performance shines in balanced audio reproduction, though it prioritizes clarity over thumping bass. The final verdict: a worthwhile investment for authentic Subaru sound upgrades that feel integrated and premium.

For American Subaru drivers seeking hassle-free audio gains, this Kicker kit stands out as a smart, model-specific choice.

Sound & Performance

High-frequency response gets a significant lift, delivering crisp treble that uncovers nuances in vocals, guitars, and high-hats often lost in stock setups. Stereo imaging expands the soundstage, making it feel like music fills the cabin during spirited drives or casual cruises.

Volume levels hold strong without distortion at highway speeds, thanks to Kicker's automotive tuning. While bass depth remains stock-like, the focus on clarity ensures podcasts and acoustic tracks sound natural and fatigue-free.

Stable integration with factory head units provides consistent output, perfect for road trips where every note counts.

Design & Battery

Coaxial speakers boast rugged automotive-grade build for enduring vibrations and temperature swings in daily Subaru use. OEM design guarantees precise door-panel fitment across compatible Impreza, WRX STI, and Crosstrek years, with no rattles or gaps post-install.

Compact profile matches stock dimensions, preserving interior aesthetics and door functionality. Weight is optimized for vehicles, avoiding any handling impact.

Power draws directly from the car's system for unlimited runtime, eliminating battery concerns and supporting all-day adventures without recharges.

2
Editor's Pick

Subaru Kicker Speaker Upgrade Kit H631SFJ001

Subaru
9.6 /10
MXJS Score
MXJS Score is calculated based on product ratings, reviews, and sales performance to help you make informed purchasing decisions. Learn more ›
Updated: May 2, 2026
Last update on May 2, 2026 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API.
This genuine OEM Kicker speaker kit delivers enhanced high-frequency response and superior stereo imaging over stock speakers. Ideal for Subaru Crosstrek, Impreza, and WRX STi owners seeking clearer car audio during road trips and daily drives.
Pros & Cons

Pros

  • Enhances high-freq response for sharper vocals and treble
  • Better stereo imaging creates wider soundstage
  • Direct OEM replacement for easy installation
  • Designed specifically for popular Subaru models

Cons

  • Limited compatibility to select 2012-2022 Subaru models
  • No emphasis on bass enhancement over stock
  • Requires vehicle-specific fit verification
Detailed Review

This Subaru Speaker Upgrade Kit by Kicker, model H631SFJ001, is a genuine OEM solution designed exclusively for 2012-2022 Crosstrek, Impreza (non-WRX/STi for some years), and WRX STi models. It replaces stock speakers to deliver noticeable improvements in audio quality, making it perfect for American Subaru drivers who crave better sound during commutes, road trips, or track days.

In real-world use, the kit shines by boosting high-frequency response, resulting in clearer vocals and instruments that cut through road noise. Stereo imaging is refined, creating a more spacious soundstage right in your cabin. Subaru owners tired of muddy factory audio will appreciate this straightforward upgrade.

Installation is straightforward as an OEM part, minimizing wiring hassles. While it excels in highs and imaging, it maintains balance without overpowering bass. Overall verdict: A solid choice for authentic Subaru audio enhancement, earning its strong rating for targeted performance.

Sound & Performance

The speakers prioritize enhanced high-frequency response, delivering crisp treble and detailed highs that make podcasts, rock tracks, and podcasts stand out. Vocal clarity is a standout, with singers and dialogue emerging sharply even at highway speeds.

Stereo imaging improvements create a wider, more precise soundstage, immersing you in music as if performers are in the car. Volume levels handle cabin noise well without distortion, and performance remains stable across genres.

Though not Bluetooth-enabled, the coaxial design integrates seamlessly with your Subaru's system for reliable, wired audio delivery.

Design & Battery

Built as genuine Subaru OEM coaxial speakers, the kit features a rugged design matched to factory specs for durability in daily driving conditions. Weight and dimensions align perfectly with stock units, ensuring no modifications needed.

Focus on precise fit for 2012-2022 models like Crosstrek and WRX STi emphasizes long-term reliability without IP ratings, as it's engineered for in-car use rather than outdoor exposure.

No battery involved; it's a powered upgrade via your vehicle's audio system, offering continuous playback without charging concerns.

3
Limited Time

Subaru OEM Kicker Tweeter Speaker Kit H631SFJ101

Subaru
9.8 /10
MXJS Score
MXJS Score is calculated based on product ratings, reviews, and sales performance to help you make informed purchasing decisions. Learn more ›
Updated: May 2, 2026
Last update on May 2, 2026 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API.
This genuine Subaru tweeter kit delivers crisp high frequencies as an OEM upgrade for select models. Best for Subaru owners upgrading car audio for daily commutes and road trips.
Pros & Cons

Pros

  • Seamless OEM integration for specific Subaru models
  • Sharp high-frequency clarity improves soundstage
  • Genuine Subaru part maintains warranty compatibility
  • Easy drop-in replacement for quick audio boost
  • Proven reliability in daily and performance driving

Cons

  • Requires vehicle disassembly for installation
  • Tweeters only, needs full speaker system for balance
  • Model-specific fit limits universal use
Detailed Review

This Subaru Genuine Tweeter Kit, part number H631SFJ101, is an official OEM Kicker speaker upgrade tailored for 2014-2018 Forester, 2012-2016 Impreza, 2015-2021 WRX/STI, and 2013-2017 Crosstrek models.

It targets Subaru enthusiasts who demand factory-quality audio enhancements for their daily drivers or performance cars, restoring or improving high-end sound without voiding warranties.

In real-world driving, the kit provides detailed highs that make music shine during commutes, road trips, or canyon carving, pairing well with stock systems for noticeable clarity gains.

Verdict: Essential for Subaru owners seeking authentic, plug-and-play treble upgrade that elevates every drive.

Sound & Performance

These Kicker tweeters shine in high-frequency delivery, offering precise treble that brings out vocal nuances and cymbal sparkle in your Subaru's cabin.

At highway volumes, expect clear separation and no harshness, transforming stock audio into a more engaging experience for rock, podcasts, or EDM.

Stable performance integrates with factory amps, maintaining balance across the sound spectrum during extended drives.

Design & Battery

Compact OEM design fits flawlessly into designated Subaru dash or door locations, blending invisibly with interior aesthetics.

Rugged construction withstands road vibrations and temperature swings in daily or performance use.

Car-powered with no battery needed, it delivers unlimited playback tied to your vehicle's electrical system, recharging effortlessly on every drive.

4
Top Rated

KICKER CS Series 6x9 & 6.5" Speakers for Subaru

KICKER
9.9 /10
MXJS Score
MXJS Score is calculated based on product ratings, reviews, and sales performance to help you make informed purchasing decisions. Learn more ›
Updated: May 2, 2026
Last update on May 2, 2026 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API.
Kicker CS Series speakers deliver full-range sound with ultra-clean bass and high sensitivity. Best for Subaru Crosstrek 2018-2024 owners upgrading factory audio for road trips and daily drives.
Pros & Cons

Pros

  • Seamless plug-and-play installation with included adapters and harnesses
  • Tailored specifically for Subaru Crosstrek 2018-2024 for exact fit
  • High sensitivity and power handling for superior factory sound
  • Full-range 2-way and 3-way design delivers balanced audio
  • Expert-matched components for best value bundle

Cons

  • Vehicle-specific design limits use to Subaru Crosstrek 2018-2024
  • May require door panel removal for install despite plug-and-play
  • No amplifier included for maximum power potential
Detailed Review

This Kicker speaker upgrade kit transforms the audio in your Subaru Crosstrek 2018-2024 with a pair of 6.5-inch front and 6x9-inch rear CS Series speakers, plus adapters and harnesses. Designed by car audio experts, it replaces factory speakers effortlessly, delivering a full soundstage upgrade without the hassle of custom fabrication.

Ideal for Crosstrek owners tired of tinny stock audio, this bundle suits daily commuters, road trippers, and adventure seekers who crave immersive sound on every drive. The high-sensitivity drivers ensure punchy output even from the factory head unit, making it a straightforward path to premium listening.

In real-world use, expect vibrant vocals, detailed instruments, and tight bass that enhances podcasts, playlists, and navigation cues alike. The easy install keeps downtime minimal, letting you enjoy upgrades in under an hour.

Verdict: A top-value kit for Crosstrek enthusiasts seeking pro-level sound without complexity. Highly recommended for plug-and-play perfection.

Sound & Performance

The CS Series 2-way 6.5-inch fronts and 3-way 6x9-inch rears provide full-range coverage with ultra-clean bass that thumps deeply without muddiness. High sensitivity hits all frequencies efficiently, producing clear highs and balanced mids perfect for dynamic music genres.

Volume levels soar to 300W and 450W max without distortion, ideal for open-road cruising or crowded tailgates. The design ensures stable performance from your head unit, with no dropouts or weak spots in the soundstage.

Overall, it excels in vocal clarity for calls and lyrics, plus bass depth that rivals pricier setups, making every drive feel like a concert.

Design & Battery

Built tough for car door mounting, these Kicker speakers feature durable CS Series construction that withstands road vibrations and daily use. The included Vixen Go adapters ensure a precise, rattle-free fit in Crosstrek front and rear doors.

Compact profiles match factory dimensions perfectly, with harnesses enabling quick plug-and-play connections. No battery needed; they draw efficient power from your vehicle's system for endless playtime on long hauls.

Lightweight yet robust, the bundle prioritizes easy handling during DIY installs, blending seamlessly into your interior for a factory-fresh look with pro audio gains.

5

Genuine Subaru OEM Tweeter Kicker Speaker Kit

Subaru
9.6 /10
MXJS Score
MXJS Score is calculated based on product ratings, reviews, and sales performance to help you make informed purchasing decisions. Learn more ›
Updated: May 2, 2026
Last update on May 2, 2026 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API.
This genuine OEM Subaru tweeter kit delivers crisp high-frequency response for enhanced audio clarity in compatible models. Best for Subaru owners upgrading stock sound systems in daily drivers or track cars.
Pros & Cons

Pros

  • Genuine OEM part ensures reliable performance
  • Direct fit for 2012-2021 compatible Subaru models
  • Enhances high-end frequencies for detailed sound
  • Durable build matches factory standards
  • Simple upgrade for better overall audio balance

Cons

  • Limited to specific Subaru model years
  • Requires some disassembly for installation
  • Tweeters focus on highs not deep bass
Detailed Review

This Subaru Tweeter Kicker Speaker Kit (H631SFJ101) is a genuine OEM upgrade designed exclusively for select 2012-2021 Subaru models including Impreza, WRX, STI, Forester, and Crosstrek. It replaces stock tweeters to deliver superior high-frequency reproduction, making it ideal for enthusiasts who want factory-authentic improvements without compromising vehicle warranty or aesthetics.

In real-world use, the kit shines during long highway drives or twisty backroads, where clearer vocals and instrument separation cut through road noise. Subaru owners tired of muffled highs in their base audio systems will appreciate the noticeable lift in detail, especially with genres like rock, pop, or podcasts.

Installation is straightforward for DIYers familiar with door panel removal, plugging directly into existing harnesses. Overall, this kit offers a cost-effective path to refined cabin sound, earning high marks for compatibility and quality from Subaru loyalists.

Verdict: A must-have for Subaru drivers seeking precise, OEM-grade audio enhancement that transforms everyday commutes into concert-like experiences.

Sound & Performance

The tweeters excel in high-frequency clarity, providing sharp cymbals, detailed vocals, and airy highs that stock speakers often lack. Paired with factory mids and woofers, they create a wider soundstage, making music feel more alive inside the cabin even at highway speeds.

Volume handles stock head unit power well, with no distortion in treble during peaks. Bluetooth or wired sources benefit from stable signal integration, ensuring consistent performance across apps and radio.

Best for drivers prioritizing treble precision over bass thump, this kit refines the overall signature for balanced, engaging listening on every drive.

Design & Battery

Built to OEM specs, the tweeters feature rugged plastic housings that withstand cabin vibrations and temperature swings, matching Subaru's durability standards for long-term reliability.

Compact design ensures flush mounting in door panels, with no added weight impacting vehicle handling. Powered directly by the car's system, they draw minimal current for endless playback without recharges.

Weather-sealed for interior humidity, they maintain performance through seasons, focusing on fit and factory integration over portability.

6

KICKER 6.5" CS Series Coaxial Speakers for Subaru

KICKER
9.9 /10
MXJS Score
MXJS Score is calculated based on product ratings, reviews, and sales performance to help you make informed purchasing decisions. Learn more ›
Updated: May 2, 2026
Last update on May 2, 2026 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API.
KICKER CS Series 6.5-inch coaxial speakers deliver full-range sound with ultra-clean bass and high sensitivity for powerful output. Ideal for Subaru Impreza 2017-2024 owners upgrading factory audio during road trips or daily drives.
Pros & Cons

Pros

  • Super easy plug-and-play setup with included adapters and harnesses
  • Full-range coaxial design provides balanced sound across all seats
  • High sensitivity ensures loud, clear audio from factory head unit
  • Custom-fit for Subaru Impreza eliminates cutting or modifications
  • Durable build matched by experts for reliable long-term performance

Cons

  • Requires car-specific fit, not universal for other vehicles
  • Max power benefits from an external amp for deepest bass
  • No built-in amplification, relies on head unit power
Detailed Review

The KICKER Speakers 6.5-inch Upgrade Kit is a complete package designed specifically for 2017-2024 Subaru Impreza owners tired of weak factory audio. It includes two pairs of CS Series CSC654 coaxial speakers, plus Vixen Go harnesses and Metra/Vixen Go adapters for front and rear doors, making it a true drop-in solution.

Car enthusiasts who love blasting tunes on road trips or commuting through city traffic will appreciate how this kit upgrades sound without the headache of custom fabrication. The speakers punch out full-range audio with high sensitivity, turning your Impreza into a mobile concert hall.

In real-world use, installation takes under an hour for DIYers, and the result is noticeably cleaner highs, fuller mids, and tighter bass that enhances every genre from rock to podcasts. It's a smart pick for value-driven upgrades.

Verdict: If you own a 2017-2024 Subaru Impreza, this KICKER kit delivers pro-level sound and simplicity that outperforms stock speakers hands-down.

Sound & Performance

These CS Series coaxial speakers excel with ultra-clean bass that provides solid low-end thump without muddiness, perfect for feeling the beat during spirited drives. High sensitivity ensures every note from your head unit comes through loud and detailed, hitting 300 watts max per pair for volume that rivals aftermarket systems.

Vocal clarity shines in the mids, making lyrics crisp and instruments separated, whether streaming podcasts or belting out vocals on highways. Full-range coverage means no frequency gaps, delivering balanced performance across front and rear speakers.

Power handling supports high volumes without breakup, ideal for open-road adventures where you crank it up. Stability comes from the secure fit, ensuring consistent output mile after mile.

Design & Battery

Built tough for daily car use, the 6.5-inch coaxial design integrates seamlessly into Subaru Impreza doors with precision adapters, offering a sleek, factory-like look. Rugged construction handles road vibrations and temperature swings without compromising sound.

Lightweight at just the right size for easy handling, the speakers and included harnesses/adapters weigh little, making solo installs straightforward. No battery needed; they draw efficient power from your vehicle's system for endless playback on long trips.

Car-grade durability means they stand up to elements like dust and moisture from open windows, with plug-and-play wiring that keeps things clean and reliable over years of use.

7

KICKER 6.5-Inch CS Series Coaxial Speakers

KICKER
9.5 /10
MXJS Score
MXJS Score is calculated based on product ratings, reviews, and sales performance to help you make informed purchasing decisions. Learn more ›
Updated: May 2, 2026
Last update on May 2, 2026 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API.
KICKER CS Series 6.5-inch coaxial speakers deliver full-range sound with ultra-clean bass and high sensitivity for powerful output up to 300W max. Ideal for Subaru WRX/STI 2016-2021 owners upgrading front door audio via simple plug-and-play install.
Pros & Cons

Pros

  • Easy plug-and-play installation with no cutting required
  • Full-range 2-way design provides balanced sound across frequencies
  • Vehicle-specific adapters ensure perfect fit for WRX/STI
  • High sensitivity for loud, efficient performance
  • Durable build matched for car audio enthusiasts

Cons

  • Best with amplifier for maximum bass depth
  • Front door specific, no rear speaker option
  • Vehicle model limited to 2016-2021 WRX/STI
Detailed Review

This KICKER speaker upgrade kit is a complete package for 2016-2021 Subaru WRX and WRX STI owners, including a pair of 6.5-inch CS Series coaxial speakers, custom adapters, and harnesses. Designed by car audio experts, it replaces factory front door speakers with minimal effort, delivering a noticeable boost in sound quality during commutes, road trips, or track days.

Targeted at performance car enthusiasts who crave richer audio without complex modifications, the kit shines in real-world use by providing full-range sound that fills the cabin with clarity and punch. The high sensitivity ensures every note from your playlist stands out, even over road noise.

Installation is a breeze thanks to the included components, making it accessible for DIYers. Overall, this bundle offers exceptional value for Subaru drivers seeking an authentic audio upgrade that enhances every drive. Verdict: Highly recommended for WRX/STI owners ready to level up their sound system.

Sound & Performance

The CS Series 2-way coaxial speakers excel with ultra-clean bass response and full-range coverage, hitting lows, mids, and highs with precision. High sensitivity means they produce strong output from your car's head unit, ideal for dynamic tracks during highway cruises or city blasts.

Volume levels reach impressive peaks up to 300W max without muddiness, ensuring clear vocals and instrument separation. While not wireless, the coaxial design integrates seamlessly with factory wiring for stable, distortion-free performance on long drives.

Perfect for rock, hip-hop, or podcasts, these speakers bring energy to your Subaru's cabin, outperforming stock units in depth and clarity.

Design & Battery

Built tough for car environments, the 6.5-inch speakers feature a robust coaxial design that withstands vibrations and daily use. The included Vixen Go adapters and harnesses ensure a flush, secure fit in WRX/STI front doors, with no rattles or gaps.

Compact and lightweight, they mount directly without modifications, emphasizing plug-and-play simplicity. No battery concerns here; they draw power efficiently from your vehicle's system for endless playback on every drive.

Rugged construction handles heat and road wear, making them a reliable long-term upgrade for active Subaru lifestyles.

8

KICKER 6x9 CS Series Speakers for Subaru Crosstrek

KICKER
9.8 /10
MXJS Score
MXJS Score is calculated based on product ratings, reviews, and sales performance to help you make informed purchasing decisions. Learn more ›
Updated: May 2, 2026
Last update on May 2, 2026 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API.
KICKER CS Series 6x9 speakers provide full-range 3-way sound with ultra-clean bass and high sensitivity for powerful output. Ideal for Subaru Crosstrek 2018-2024 owners upgrading factory front door audio during daily commutes or road trips.
Pros & Cons

Pros

  • Easy plug-and-play setup with included adapters and harnesses
  • Powerful 450W max handling for distortion-free volume
  • Tailored for 2018-2024 Subaru Crosstrek front doors
  • 3-way design covers all frequencies with high sensitivity
  • Full-range sound enhances every road trip

Cons

  • Requires basic door panel removal for installation
  • Best performance with added amplifier for peak power
  • Larger 6x9 size may overpower subtle listening preferences
Detailed Review

This KICKER upgrade kit includes a pair of 6x9-inch CS Series 3-way coaxial speakers, custom Vixen Go adapters, and harnesses designed specifically for the front doors of 2018-2024 Subaru Crosstrek models. It transforms lackluster factory audio into a dynamic system without the hassle of custom fabrication.

Targeted at Crosstrek owners who crave richer sound for commutes, off-road adventures, or long hauls, this bundle leverages KICKER's expertise for a vehicle-specific fit. High sensitivity ensures punchy output even from the stock head unit, while the 3-way design hits every frequency.

In real-world use, the speakers deliver ultra-clean bass that fills the cabin without muddiness, making podcasts crystal clear and music tracks come alive. Installation is straightforward plug-and-play, often completed in under an hour.

Verdict: A top-value upgrade for Crosstrek drivers seeking pro-level sound with minimal effort. Highly recommended for anyone tired of thin factory speakers.

Sound & Performance

The CS Series 3-way coaxial design excels with ultra-clean bass that provides solid low-end thump for rock and hip-hop, without overpowering mids during drives. High sensitivity translates to efficient power use, pushing 450 watts max for cabin-filling volume on highways.

Vocal clarity shines through in the full-range response, keeping lyrics crisp and instruments separated even at high speeds. The setup maintains balance across genres, from country ballads to EDM drops.

Stability comes from the secure door mounting via adapters, ensuring consistent performance without rattles. Paired with a decent head unit, it outperforms stock speakers by wide margins.

Design & Battery

Built for car durability, these 6x9 speakers feature a rugged coaxial design that withstands road vibrations and daily use in a Crosstrek. The included Vixen Go adapters provide a precise, factory-like fit in front doors, minimizing gaps and maximizing seal.

Lightweight construction keeps door panels balanced, with harnesses eliminating wiring cuts for a clean install. High sensitivity means low draw on the car battery, preserving starter power during extended listening.

No excessive weight or bulk; the kit integrates seamlessly without altering vehicle aesthetics or handling. Efficient power handling supports long drives without drain concerns.

9

Subaru Genuine Kicker Tweeter Kit for WRX STI

Subaru
9.5 /10
MXJS Score
MXJS Score is calculated based on product ratings, reviews, and sales performance to help you make informed purchasing decisions. Learn more ›
Updated: May 2, 2026
Last update on May 2, 2026 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API.
This Kicker-designed Subaru tweeter kit delivers crisp high-frequency sound with exact fit for WRX, STI, Forester, and Impreza models. Best for Subaru drivers seeking enhanced treble clarity on commutes and road trips.
Pros & Cons

Pros

  • Exact fit designed specifically for Subaru models
  • High-quality Kicker tweeters for superior treble
  • Complete kit with mounting hardware included
  • Genuine Subaru accessory ensures compatibility
  • Improves overall audio clarity in vehicle

Cons

  • Limited to specific Subaru models only
  • May require audio system tuning for best results
  • Higher cost compared to aftermarket universal options
Detailed Review

The Subaru Genuine Tweeter Kit is a Kicker-co-designed accessory featuring two tweeters and mounting hardware, crafted for precise integration into WRX, STI, Forester, Crosstrek, and Impreza models. It upgrades factory audio by focusing on high frequencies, delivering clearer vocals and treble without guesswork on fitment.

Ideal for Subaru enthusiasts who want OEM reliability with enhanced sound, this kit targets drivers tired of muddled highs during long highway drives or track sessions. Its vehicle-specific engineering ensures it works seamlessly with your car's system.

In real-world use, the tweeters provide noticeable improvement in detail and separation, making podcasts, music, and calls sharper. Paired with existing speakers, it creates a more balanced cabin soundstage.

Overall verdict: A smart, no-fuss upgrade for Subaru owners prioritizing authentic audio enhancement and perfect fit.

Sound & Performance

These tweeters excel in high-frequency reproduction, offering crisp treble and clear vocals that cut through road noise in Subaru vehicles. Kicker's tuning ensures detailed highs without harshness, complementing mids and bass from factory speakers.

Performance shines at highway volumes, maintaining clarity across genres from rock to podcasts. Vehicle-specific design integrates stably, with no dropouts since it's wired directly into the car's audio system.

Users note improved soundstaging, making the cabin feel more immersive for front-seat listeners on daily commutes or spirited drives.

Design & Battery

Sleek, compact tweeters with included mounting hardware fit precisely into designated Subaru locations, ensuring a factory-like install without rattles or gaps. Built for automotive durability, they handle vibrations and temperature swings inside the cabin.

No battery needed; powered directly by the vehicle's electrical system for unlimited playback during drives. Lightweight design adds no strain to doors or pillars.

Rugged construction matches Subaru's OEM standards, standing up to years of road use without fading performance.

10

KICKER 6.5" CS Series Coaxial Speakers for Subaru

KICKER
9.8 /10
MXJS Score
MXJS Score is calculated based on product ratings, reviews, and sales performance to help you make informed purchasing decisions. Learn more ›
Updated: May 2, 2026
Last update on May 2, 2026 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API.
KICKER CS Series 6.5-inch coaxial speakers deliver full-range sound with ultra-clean bass and high sensitivity for powerful output up to 300 watts max. Ideal for Subaru Crosstrek 2018-2024 owners upgrading rear door audio for better road trip and commute listening.
Pros & Cons

Pros

  • Super easy plug-and-play installation with included adapters and harnesses
  • Tailored specifically for Subaru Crosstrek 2018-2024 for seamless fit
  • High sensitivity and 300W max power for strong, clean sound output
  • Full-range audio covers bass to highs without needing extra components

Cons

  • Coaxial design may limit tweeter positioning compared to component speakers
  • Best performance with factory head unit; amp recommended for max volume
  • Rear door focus only; front upgrades sold separately
Detailed Review

This KICKER speaker upgrade kit is a complete package for 2018-2024 Subaru Crosstrek owners tired of factory audio. It includes a pair of 6.5-inch CS Series 2-way coaxial speakers, custom Vixen Go adapters, and harnesses, making it a drop-in replacement for rear door speakers.

Designed by car audio experts, the kit delivers full-range sound with ultra-clean bass and high sensitivity, perfect for music lovers who want richer audio during commutes, road trips, or off-road adventures in their Crosstrek. No cutting or modifications needed - just plug and play.

In real-world use, these speakers shine with powerful output that fills the cabin without distortion, elevating podcasts, rock tracks, or country playlists. Subaru enthusiasts get pro-level sound without the hassle of custom fab work.

Verdict: A top pick for easy, high-impact audio upgrades that punch above their weight for the price. If you drive a Crosstrek and crave better bass and clarity, this bundle is a no-brainer.

Sound & Performance

The CS Series speakers excel with ultra-clean bass that provides deep, controlled low-end perfect for feeling the thump on bumpy roads. High sensitivity ensures every note from 300 watts max power translates to loud, clear playback across the frequency range.

Vocal clarity stands out in coaxial form, with smooth mids and crisp highs that make lyrics pop during long drives. Volume levels handle highway noise effortlessly, maintaining detail without muddiness.

Stable wired connection via harnesses means no dropouts - reliable performance tuned for Crosstrek cabins, outperforming stock speakers in every metric from bass depth to overall balance.

Design & Battery

Built rugged for car door mounting, these coaxial speakers feature durable cones and frames that withstand vibrations from daily driving and light off-roading in a Crosstrek. Compact 6.5-inch size with included adapters ensures a flush, factory-like fit.

No battery needed - powered directly by your vehicle's system for endless playtime on road trips. Lightweight design keeps doors balanced and easy to handle during install.

Adapters and harnesses add to the plug-and-play appeal, with no dust or water ingress issues in sealed door panels. Overall, a sturdy, vehicle-integrated solution that prioritizes longevity and simplicity over portability.

FAQs

Do H631SFJ101 tweeters fit 2017 Crosstrek doors?

Yes, H631SFJ101 tweeters match 2013-2017 Crosstrek. Subaru and Kicker designed them for exact fit with mounting hardware. They boost high-frequency response over stock. Stereo imaging improves for better front-stage focus. No mods needed.

How does CS Series sensitivity affect Crosstrek audio?

High sensitivity in Kicker CS Series hits full range at lower power. 300 watts max per pair drives clean bass in car doors. Road noise drops as output matches stock head units. Full sound experience covers lows to highs without strain.

Are adapters included for 2017 Crosstrek Kicker installs?

Yes, kits include Vixen Go adapters like VGB6503 for Crosstrek. Plug-and-play with harnesses avoids wiring cuts. Front and rear doors swap easy. Perfect match saves install time on 2017 models.

What’s the power handling for Crosstrek rear door speakers?

CS Series 6.5-inch coaxials take 300 watts max. High sensitivity ensures loud output from factory amps. Ultra-clean bass fills cabin. No distortion at highway volumes.

Do these kits improve stereo imaging in WRX STI Crosstreks?

H631SFJ001 speakers enhance imaging beyond stock. Special design sharpens highs. Fits 2015-2022 WRX STI and 2013-2017 Crosstrek. Wider soundstage helps track instruments better. See Kicker DS 6×9 speakers for rear upgrades. Or Stage3 Motorsports Kicker door speakers.

Can Kicker 6x9s replace Crosstrek front doors?

Yes, CSC6934 6x9s with adapters fit 2018-2024 Crosstrek fronts. 450 watts max for 3-way design. Hits frequencies with clean bass. Bundles include harnesses for quick swap.