Collection: Drivetrain Upgrades For Subaru WRX S4 VA
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ACT HD/Race Rigid 6 Pad Clutch Kit | Subaru WRX (06-25) (SB12-HDR6)
Vendor:ACTRegular price $1,124.04 USDRegular priceUnit price / per$1,479.00 USDSale price $1,124.04 USDSale -
ACT 10-25 Subaru WRX Prolite Flywheel | Subaru WRX (10-25) (600895)
Vendor:ACTRegular price $360.24 USDRegular priceUnit price / per$474.00 USDSale price $360.24 USDSale -
Torque Solution Solid Billet Trans Mount | Subaru Impreza WRX/WRX STI (02-23) (TS-SU-300SB)
Vendor:Torque SolutionRegular price $146.65 USDRegular priceUnit price / per$183.32 USDSale price $146.65 USDSale -
Competition Clutch Street Series 2100 Clutch Kit | Multiple Fitments (15021-2100)
Vendor:Competition ClutchRegular price $465.29 USDRegular priceUnit price / per$565.00 USDSale price $465.29 USDSale -
Driveshaft Shop 1-Piece Carbon Fiber Driveshaft | 2015-2017 Subaru STI (610265)
Vendor:Driveshaft ShopRegular price $1,213.31 USDRegular priceUnit price / per$1,299.98 USDSale price $1,213.31 USDSale -
Torque Solution Solid Billet Positive Shift Kit | 2002-2021 Subaru WRX/STI (TS-SU-PSK-SB)
Vendor:Torque SolutionRegular price $71.11 USDRegular priceUnit price / per$88.88 USDSale price $71.11 USDSale -
MOOG Rear Hub Assembly | Subaru WRX (15-19) (512536)
Vendor:MoogRegular price $185.45 USDRegular priceUnit price / per$287.66 USDSale price $185.45 USDSale -
ACT Heavy Duty Race Rigid 4 Pad Clutch Kit | Multiple Subaru Fitments (SB11-HDR4)
Vendor:ACTRegular price $1,180.00 USDRegular priceUnit price / per$1,457.00 USDSale price $1,180.00 USDSale -
ACT 4-Pad Rigid Race Disc | Multiple Subaru Fitments (4240018)
Vendor:ACTRegular price $157.00 USDRegular priceUnit price / per$194.00 USDSale price $157.00 USDSale -
ACT Heavy Duty Race Rigid 4 Pad Clutch Kit with Monoloc | Subaru WRX/STi (04-21) (SB10-HDR4)
Vendor:ACTRegular price $781.00 USDRegular priceUnit price / per$964.00 USDSale price $781.00 USDSale -
ACT Extreme Race Rigid 4 Pad Clutch Kit | Multiple Subaru Fitments (SB11-XTR4)
Vendor:ACTRegular price $1,230.00 USDRegular priceUnit price / per$1,519.00 USDSale price $1,230.00 USDSale -
ACT Extreme Race Rigid 4 Pad Solid Disc Clutch Kit | Subaru STI (04-21) (SB10-XTR4)
Vendor:ACTRegular price $823.00 USDRegular priceUnit price / per$1,016.00 USDSale price $823.00 USDSale -
Action Clutch Stage 5 Clutch w/ Lightened Flywheel | Subaru WRX (14-21) (ACR-1820-FW)
Vendor:Action ClutchRegular price $893.49 USDRegular priceUnit price / per$922.21 USDSale price $893.49 USDSale -
Action Clutch Stage 1 HD Clutch Kit | Subaru WRX 18-21 2.0L DOHC (FA20DIT) (ACR-1816-2OS-FW)
Vendor:Action ClutchRegular price $811.14 USDRegular priceUnit price / per$837.21 USDSale price $811.14 USDSale -
Clutch Masters FX350 HD Street/Race Clutch Kit | 2004-2019 Subaru STI (15017-HDFF)
Vendor:Clutch MastersRegular price $680.00 USDRegular priceUnit price / per$850.00 USDSale price $680.00 USDSale -
Competition Clutch Stock Clutch OEM Kit | 04-11 Subaru STI (15030-STOCK)
Vendor:Competition ClutchRegular price $452.94 USDRegular priceUnit price / per$550.00 USDSale price $452.94 USDSale -
Cusco Rdiff Cover Blue Increased Capacity | Subaru WRX STI (15-21) (692 008 AL)
Vendor:CuscoRegular price $796.00 USDRegular priceUnit price / per$995.00 USDSale price $796.00 USDSale -
Competition Clutch Stage 2 Clutch Kit | 2005-2011 Subaru Legacy GT (15026-RK-2100)
Vendor:Competition ClutchRegular price $630.00 USDRegular priceUnit price / per$765.00 USDSale price $630.00 USDSale -

ACT HD/Race 6 Pad Clutch Kit | Subaru Impreza/Legacy/Forester/Outback/B9 Tribeca (92-25) (SB12-HDG6)
Vendor:ACTRegular price $1,176.48 USDRegular priceUnit price / per$1,548.00 USDSale price $1,176.48 USDSale -
Action Clutch Stage 1 Clutch Kit | Subaru WRX (ACR-1816)
Vendor:Action ClutchRegular price $494.08 USDRegular priceUnit price / per$509.96 USDSale price $494.08 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.







