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AMSOIL Fluid Extraction Pump Subaru OEM High Performance Gear Oil 75W90 - 1 Quart Red Line 75W90 GL-5 Gear Oil 1 Quart
Fluid Pump, Call for pricing 417-838-7927 This is an OEM Subaru 75W-90 Oil Most popular Red Line gear oil.
Red Line MT90 GL-4 Gear Oil 1 Quart ( Nissan, Toyota and Mazda ) Redline LightWeight ShockProof Gear Oil 1 Quart Redline Superlight ShockProof Gear Oil 1 Quart
Eliminates notchy shifting, even when cold. Improved cold shifting. Improves shifting
Motul Gear 300 Synthetic 75W90 ( 1 Quart ) TiC 6MT Pivot Bushings 04-2017 STI Whiteline Engine - Pitch Mount Bushing (02 - 07, 15 - 18 WRX / 04 - 07, 15 - 18 STi)
75W90 Synthetic They fit all years of the USDM STi. Limited lifetime warranty
Whiteline Gearbox - Mount Bushing (02 - 18 WRX / 04 - 18 STi) Torque Solution Rear Differential Inserts 08-17 STI / 08-17 WRX Torque Solution Transmission Member Bushing 02-14 WRX / 04-17 STI
3 year / 60,000 mile warranty Increases response Installs in under 30 Minutes.
Torque Solution Rear Differential Bushings 08-17 WRX / 08-17 STI Whiteline Gearbox Positive Shift Bushing Kit 08-17 STI / 08-17 WRX Group N Pitch Stop Mount 02-17 WRX / 04-17 STI
Reduces rear end float under acceleration Faster shift response Perfect for stock to moderate power levels.
Torque Solution Solid Billet Pitch Stop Tranny Mount - Black (15 - 18 WRX / STi) Torque Solution Pitch Stop Mount 02-17 WRX / 04-17 STI Perrin 6spd Short Shifter Adaptor  04-2017 STI
Eliminate wheel hop
Life Time Warranty

PERRIN shifter allows for a 0%-50% reduction in shifter throw.
Perrin Reverse Lockout Lever 04-17 STI Perrin Pitch Stop 02-17 WRX / 04-17 STI Whiteline Engine - Pitch Mount (02 - 18 WRX / 04 - 18 STi)
Machined from billet 6061 aluminum. 5 Year Warranty

3 year / 60,000 mile warranty
Agency Power Pitch Stop Mount 02-17 WRX / 04-17 STI Torque Solution Solid Billet Transmission Mount: Subaru WRX 2002-2017 / STI 2004-2019 Kartboy Pitch Stop Mount 02-17 WRX / 04-17 STI
LIMITED LIFETIME warranty Lifetime Warranty Reduces engine movement
Torque Solution Transmission Mount 02-17 WRX / 04-17 STI Torque Solution Billet Rear Differential Brace 08-18 WRX / 08-18 STI Kartboy Short Shifter and Bushing Combo Kit Subaru STI 2004-2017
Lifetime Warranty Reduces movement and clunking Made in America.
Torque Solution Pitch Stop Brace (15 - 18 WRX / STi) Perrin Transmission Mount Perrin Pitch Stop Brace 15-17 WRX / 15-17 STI / 15-17 WRX CVT
Limited lifetime warranty Reduce drivetrain movement Protect your firewall.