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AMSOIL Fluid Extraction Pump Subaru OEM High Performance Gear Oil 75W90 - 1 Quart Redline Superlight ShockProof Gear Oil 1 Quart
Fluid Pump, Call for pricing 417-838-7927 This is an OEM Subaru 75W-90 Oil Improves shifting
Red Line MT90 GL-4 Gear Oil 1 Quart ( Nissan, Toyota and Mazda ) Red Line 75W90 GL-5 Gear Oil 1 Quart Redline LightWeight ShockProof Gear Oil 1 Quart
Eliminates notchy shifting, even when cold. Most popular Red Line gear oil. Improved cold shifting.
TiC 6MT Pivot Bushings 04-2017 STI Whiteline Pitch Mount Replacement for OEM Bushing 02-07 WRX / 04-07 STI Motul Gear 300 Synthetic 75W90 ( 1 Quart )
They fit all years of the USDM STi. Limited lifetime warranty 75W90 Synthetic
Whiteline Gearbox - Mount Bushing (02 - 18 WRX / 04 - 18 STi) Torque Solution Transmission Member Bushing 02-14 WRX / 04-17 STI Torque Solution Rear Differential Inserts 08-21 STI / 08-21 WRX
3 year / 60,000 mile warranty Installs in under 30 Minutes. Increases response
Torque Solution Rear Differential Bushings 08-17 WRX / 08-17 STI Whiteline Gearbox Positive Shift Bushing Kit 08-21 STI / 08-21 WRX Group N Pitch Stop Mount 02-18 WRX / 05-09 OBXT / 04-20 STI
Reduces rear end float under acceleration Faster shift response OEM Replacement
Torque Solution Solid 6 speed Shifter Linkage U-Joint Subaru STI 2004-2019 Perrin 6spd Short Shifter Adaptor  04-2017 STI Torque Solution Pitch Stop Mount 02-18 WRX / 04-20 STI
Saves money! PERRIN shifter allows for a 0%-50% reduction in shifter throw.
Life Time Warranty

Torque Solution Solid Billet Pitch Stop Tranny Mount - Black (15 - 18 WRX / STi) Perrin Reverse Lockout Lever 04-17 STI Perrin Pitch Stop 02-20 WRX / 05-09 LGT/ 04-20 STI
Eliminate wheel hop Machined from billet 6061 aluminum. 5 Year Warranty

Whiteline Engine - Pitch Mount (02 - 18 WRX / 04 - 18 STi) Kartboy Pitch Stop Mount 02-17 WRX / 04-17 STI Torque Solution Solid Billet Transmission Mount: Subaru WRX 2002-2017 / STI 2004-2019
3 year / 60,000 mile warranty Reduces engine movement Lifetime Warranty
Torque Solution Transmission Mount 02-20 WRX / 04-20 STI Torque Solution Billet Rear Differential Brace 08-18 WRX / 08-18 STI Kartboy Short Shifter and Bushing Combo Kit Subaru STI 2004-2021
Lifetime Warranty Reduces movement and clunking Made in America.
Torque Solution Pitch Stop Brace 15-20 WRX / 15-20 STI Perrin Transmission Mount Perrin Pitch Stop Brace 15-21 WRX / 15-21 STI
Limited lifetime warranty Reduce drivetrain movement 5 Year Warranty