2015-2021 Subaru STI Suspension

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      JDMuscle [15-21 WRX/STI] Front Member Brace - JDMuscleFrame BracesJDM-WRX15-FMBRDRed
      JDMuscle

      Front Member Brace

      Fits: 15-21 WRX/STI

      From $11900$149.00 Save $30
    • Up to $70.40 off
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      Perrin [08-21 WRX/STI / 13-17 Crosstrek] Front Strut Tower Brace | PSP-SUS-056
      Perrin Performance

      Perrin Front Strut Tower Brace

      Fits: 08-21 WRX/STI

      $28160$352.00 Save $70.40
      Pay over time · Est. $8.80/payment
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      Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

    • In Stock
      JDMuscle [15 - 21 WRX/STI] Front Member Brace V2 Fits FMIC application - JDMuscleFrame BracesJDM-WRX15-FMB-FMICRDRed
      JDMuscle

      Front Member Brace V2 Fits FMIC application *Clearance*

      Fits: 15-21 WRX/STI

      Only 8 left
      $19900
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      Cusco [15-25 WRX, 15-21 STI, 22-24 GR86/BRZ] Lateral Control Arm | 6A1 474 LN
      Cusco

      Lateral Control Arm

      Fits: 15-26 WRX, 15-21 STI, 22-26 GR86/BRZ

      $62100$690.00 Save $69
      Pay over time · Est. $19.41/payment
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      Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
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      Whiteline [08-25 WRX, 08-21 STI, 09-13 FXT, 13-22 BRZ] Rear Adjustable Control Arms | KTA216A
      Whiteline

      Rear Adjustable Control Arms

      Fits: 08-26 WRX, 08-21 WRX STI, 13-26 BRZ/GR86

      $33199$368.88 Save $36.89
      Pay over time · Est. $10.37/payment
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      Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
    • Bilstein [15-21 WRX/STI] B6 Performance Shocks and Struts Kit - JDMuscleShocks and Struts35-249474|35-249467|24-249485|24-249485
      Bilstein

      B6 Performance Shocks and Struts Kit

      Fits: 15-21 WRX/STI

      $97000
      Pay over time · Est. $30.31/payment
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      Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
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      BLOX Racing [15 - 21 WRX/STI] Street Series II Plus Coilovers | BXSS - 03505 - JDMuscleCoiloversbloBXSS-03505
      BLOX Racing

      Street Series II Plus Coilovers

      Fits: 15-21 WRX/STI

      Only 1 left
      $70100$800.00 Save $99
      Pay over time · Est. $21.91/payment
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      Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
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      Tein [15 - 21 WRX/STI] S. Tech Springs - JDMuscleLowering SpringsteinSKSB0-S3B00
      Tein

      S.Tech Springs

      Fits: 15-21 WRX/STI

      Only 7 left
      $21300$340.00 Save $127
      Pay over time · Est. $6.66/payment
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      Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
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      Cusco [15-21 WRX/STI] Front Strut Tower Bar Type OS | 6A1 540 A
      Cusco

      Front Strut Tower Bar Type OS

      Fits: 15-21 WRX/STI

      Only 10 left
      $19800$220.00 Save $22
    • Up to $131.12 off
      Tein 15-21 STI S-Tech Springs | SKSB0-AUB00
      Tein

      S.Tech Lowering Springs

      Fits: 15-21 WRX STI

      $19888$330.00 Save $131.12
    • Up to $44.99 off
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      Whiteline [08 - 25 WRX, 08 - 21 STI, 13 - 25 BRZ/FRS/86] Adjustable Rear Lower Control Arms | whlKTA139A - JDMuscleControl ArmswhlKTA139A
      Whiteline

      Adjustable Rear Lower Control Arms

      Fits: 08-26 WRX, 08-21 WRX STI, 13-26 BRZ/FRS/86

      $40489$449.88 Save $44.99
      Pay over time · Est. $12.65/payment
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      Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
    • BC Racing [15-21 WRX/STI] BR Series Coilover Kit| F-25-BR - JDMuscleCoiloversBCRF-25-BR
      BC Racing

      BR Series Coilover Kit

      Fits: 15-21 WRX/STI

      $1,19500
      Pay over time · Est. $37.34/payment
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      Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
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      BLOX Racing 13-23 BRZ / 08-21 WRX/STI Rear Lower Control Arms Black | BXSS-50010-BK
      BLOX Racing

      Rear Lower Control Arms Black

      Fits: 13-26 BRZ/GR86, 08-26 WRX/STI

      $28100$320.00 Save $39
      Pay over time · Est. $8.78/payment
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      Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
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      Perrin 08-25 WRX / 08-21 STI / 10-12 LGT / 09-13 FXT / 13-22 BRZ / 13-16 FRS / 17-21 GT86 / 2022 GR86 Rear Endlinks | PSP-SUS-237
      Perrin Performance

      Perrin Rear Endlinks

      Fits: 08-25 WRX, 08-21 STI, 10-12 LGT, 09-13 FXT, 13-22 BRZ, 13-16 FRS, 17-21 GT86, 22 GR86

      $20400$255.00 Save $51
      Pay over time · Est. $6.38/payment
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      Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
    • Up to $32 off
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      Perrin [15-21 WRX/STI] Front Endlinks | PSP-SUS-118
      Perrin Performance

      Perrin Front Endlinks

      Fits: 15-21 WRX/STI, 14-18 Forester XT, 13-17 Crosstrek

      $12800$160.00 Save $32
    • Up to $39 off
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      Tein [15 - 21 WRX/STI VAG/VAF] Flex Z Coilovers | VSSB2 - C1SA4 - C - JDMuscleCoiloversteinVSSB2-C1SA4-C
      Tein

      Flex Z Coilovers

      Fits: 15-21 Subaru WRX / WRX STI

      Only 13 left
      $1,00100$1,040.00 Save $39
      Pay over time · Est. $31.28/payment
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      Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

    Built on a Strong Factory Foundation

    The STI's multi-link rear suspension is shared with the WRX but tuned to a different spring rate for sharper turn-in. One real limitation carries over from the factory geometry: the rear lower control arms are fixed length, so there's no camber adjustment out of the box.

    That's where aftermarket control arms from Whiteline or Cusco come in. Swapping in adjustable rear control arms restores the camber tuning that's missing from the factory setup, which matters the moment you lower the car or run wider wheels.

    Choose the Right Subaru STI Suspension Setup

    Daily driver chasing a cleaner stance? Eibach or Tein lowering springs drop ride height without sacrificing the compliance you need for daily roads.

    Track regular pushing harder? Ohlins or BC Racing coilovers give you full ride height and damping control, built to handle repeated heat cycles that stock dampers weren't designed for. Pairing either setup with Perrin strut tower braces tightens chassis flex under hard cornering.

    Round Out the Build With Supporting Components

    Torque Solution engine and transmission mounts cut drivetrain movement that robs power delivery. Super Pro and Prothane bushings replace soft factory rubber throughout the chassis.

    Air Lift Performance rounds out the catalog for owners who want adjustable ride height without giving up daily comfort. Every listing on JDMuscle's Subaru STI suspension page includes verified fitment details, so you know a component matches your specific VA-chassis trim.

    FAQs

    Why doesn't my STI have rear camber adjustment from the factory?

    The rear multi-link suspension uses fixed-length lower control arms, so camber is set by ride height and manufacturing tolerances alone. Subaru's factory eccentric bolts only adjust the toe, not camber.

    Do I need an alignment after installing new suspension components?

    Yes, any change to ride height, control arm length, or camber settings shifts your alignment specs. Get a full alignment after the install, or you'll see uneven tire wear within a few thousand miles.

    What's the difference between lowering springs and coilovers for an STI?

    Lowering springs work with your factory dampers and drop ride height at a fixed rate. Coilovers replace the entire strut assembly, giving you adjustable ride height and often adjustable damping too.

    Why buy STI suspension parts from JDMuscle?

    JDMuscle backs every suspension order with a price match guarantee and same-day shipping, plus a support team of Subaru enthusiasts who can walk you through fitment before checkout. Contact JDMuscle today to talk through your build.