Collection: Drivetrain Upgrades For Subaru WRX S4 VA
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Cusco Rear Differential Carrier | 2015-2022 Subaru WRX and 2015-2021 Subaru WRX STI (6A1 489 A)
Vendor:CuscoRegular price $148.00 USDRegular priceUnit price / per$185.00 USDSale price $148.00 USDSale -
Exedy OE Clutch Kit | 2004-2018 Subaru WRX STI (FJK1000)
Vendor:ExedyRegular price $291.29 USDRegular priceUnit price / per$400.54 USDSale price $291.29 USDSale -
Perrin Shifter Detent Kit 2015-2025 WRX / 2018-2023 Crosstrek
Vendor:Perrin PerformanceRegular price $24.33 USDRegular priceUnit price / per$47.00 USDSale price $24.33 USDSale -

Competition Clutch Stage 4 Sprung 1620 Series Clutch Kit | 2004-2016 Subaru STI (15030-1620)
Vendor:Competition ClutchRegular price $576.47 USDRegular priceUnit price / per$700.00 USDSale price $576.47 USDSale -
COBB Stage 1 Drivetrain Package w/ Adj Shifter | Subaru WRX (08-14) / Legacy GT/Outback XT (05-09) / Forester XT 5MT (06-08) (214X01)
Vendor:COBBRegular price $235.00 USDRegular priceUnit price / per$235.00 USDSale price $235.00 USD -
COBB Stage 1+ Double Adj Drivetrain Package | Subaru WRX/Legacy GT/Outback XT/Forester XT 5MT (05-14) (214X01P-W-RD)
Vendor:COBBRegular price $320.00 USDRegular priceUnit price / per$320.00 USDSale price $320.00 USD -
COBB F&R Shifter Bush Pack 5-Speed | Subaru WRX (02-14)/Legacy GT/Forester XT/Outback XT (21132X)
Vendor:COBBRegular price $80.00 USDRegular priceUnit price / per$80.00 USDSale price $80.00 USD -
Competition Clutch Strip Series 1620 Clutch Kit | Multiple Fitments (15021-1620)
Vendor:Competition ClutchRegular price $514.71 USDRegular priceUnit price / per$625.00 USDSale price $514.71 USDSale -
SuperPro SPF Differential Mount Bushings | 2015+ Subaru WRX/STI (SPF3201K)
Vendor:SuperproRegular price $71.28 USDRegular priceUnit price / per$100.99 USDSale price $71.28 USDSale -
Torque Solution Shifter Linkage Bushings | Subaru WRX/STI (TS-SU-701)
Vendor:Torque SolutionRegular price $26.65 USDRegular priceUnit price / per$33.32 USDSale price $26.65 USDSale -

ACT HD/Race 4 Pad Clutch Kit | Subaru Impreza/Legacy/Forester/Outback/B9 Tribeca (92-25) (SB12-HDG4)
Vendor:ACTRegular price $1,150.64 USDRegular priceUnit price / per$1,514.00 USDSale price $1,150.64 USDSale -
COBB Rear Shifter Bush | Subaru WRX (02-14) STI (04-21) BRZ (13-21) Legacy GT/Forester XT/Outback XT (05-09) (211330)
Vendor:COBBRegular price $55.00 USDRegular priceUnit price / per$55.00 USDSale price $55.00 USD -
ACT HD/Race Rigid 4 Pad Clutch Kit | Subaru WRX (92-26) (SB12-HDR4)
Vendor:ACTRegular price $1,107.32 USDRegular priceUnit price / per$1,457.00 USDSale price $1,107.32 USDSale -
ACT 6-Pad Rigid Race Clutch Kit | Subaru WRX XT (06-25) (SB12-XTR6)
Vendor:ACTRegular price $1,171.16 USDRegular priceUnit price / per$1,541.00 USDSale price $1,171.16 USDSale -

ACT 06-25 Subaru WRX XT Race Rigid 4 Pad Clutch Kit | Subaru WRX / STI (EJ18/20/22/25) (SB12-XTR4)
Vendor:ACTRegular price $1,154.44 USDRegular priceUnit price / per$1,519.00 USDSale price $1,154.44 USDSale -
ACT 4-Pad Race Clutch Kit | Subaru WRX XT (06-25) (SB12-XTG4)
Vendor:ACTRegular price $1,197.76 USDRegular priceUnit price / per$1,576.00 USDSale price $1,197.76 USDSale -

ACT Heavy Duty Performance Street Sprung Clutch Kit | Subaru WRX (Excl. STI) (06-25) (SB12-HDSS)
Vendor:ACTRegular price $1,129.36 USDRegular priceUnit price / per$1,486.00 USDSale price $1,129.36 USDSale -
ACT Sprung Clutch Kit | Subaru WRX XT (06-25) (SB12-XTSS)
Vendor:ACTRegular price $1,176.48 USDRegular priceUnit price / per$1,548.00 USDSale price $1,176.48 USDSale -
2008-2014 Subaru STI Short Shifter upgrade kit by Go Fast Bits (4202)
Vendor:Go Fast BitsRegular price $80.69 USDRegular priceUnit price / per$112.90 USDSale price $80.69 USDSale -
2008-2014 Subaru STI Basic Short Shifter Kit by Go Fast Bits (4003)
Vendor:Go Fast BitsRegular price $175.11 USDRegular priceUnit price / per$245.00 USDSale price $175.11 USDSale
Enhance Your Subaru WRX S4 VA with Premium Drivetrain Upgrades
Optimize your Subaru WRX S4 VA’s performance with drivetrain upgrades designed to improve power delivery, response, and durability. This collection offers carefully selected components that address clutch engagement, shifting precision, and differential efficiency to elevate your driving experience.
What are the benefits of upgrading your WRX S4 VA clutch and flywheel?
Upgrading clutch and flywheel assemblies can significantly improve throttle response and shift feel by reducing rotational mass and increasing engagement precision. These components help your WRX handle increased power and aggressive driving without sacrificing reliability.
- Quicker clutch engagement for faster gear changes
- Improved pedal feel and modulation
- Enhanced durability under high-stress conditions
How do precision shifters and reinforced mounts improve drivetrain performance?
Precision shifters reduce slop and provide a more direct connection between your hand and the transmission, resulting in smoother, more confident gear changes. Reinforced mounts minimize drivetrain movement, which helps maintain alignment and reduces wear on components, translating to better power transfer and longevity.
Which differential and axle upgrades should Subaru WRX S4 VA owners consider?
Upgraded axles and differential parts enhance traction and strength, especially under demanding driving conditions. Stronger axles resist bending or breaking, while improved differential components optimize power distribution to the wheels. Explore our selection to find parts tailored to your WRX S4 VA’s needs and elevate your drivetrain’s reliability and performance at WheelFlip.














