STI Type RA Gearsets 02+ WRX

Close ratio gears from the STi RA feature strengthened and hardened components for improved reliability of the 5MT in modified Imprezas. Treated gearsets now feature micro-polishing for improved reliability, strength, and reduced frictional losses. Each gearset includes all necessary parts for installation including a custom speedometer gear (specify 3.9, 4.1, or 4.4 final drive ratio when ordering).

Non-turbo adapter kit includes additional parts to allow proper fitment of the gearset into non-turbo applications. Professional installation is recommended.

2006-2007 WRX kit requires an additional synchro, found below in the pull down menu.

Gear Kit Includes

STI RA Main Shaft
STI RA 1st Driven Gear
STI RA 2nd Driven Gear
STI RA 3rd Driven Gear
STI RA 4th Driven Gear
STI RA 3rd/4th Driven Gear Cluster
STI RA 5th Drive Gear
STI RA 5th Driven Gear
3rd/4th Shift Fork Rod
3rd/4th Synchro Hub Set
4th Gear Thrust Washer
Lock Nut, Main Shaft
Lock Nut, Pinion Shaft
Lock Nut, Driven Shaft
Oil Seal, Main Shaft
Custom Steel Speedometer Gear, Calibrated for 3.90 Final Drive
Case Gasket

• Micro finish:

This involves a unique micro-finishing process that leaves all of the gear surfaces lightly polished. This helps to reduce friction between the gears. The benefits include reduced power loss through the transmission, reduced oil temperatures (which improves shifting performance under severe conditions), and improved break-in and longevity. Through our research we have found this process (REM) to be more beneficial than Cyro treating.

• Transmission rebuild popular buys:

Genuine Subaru Bearing Set- $377.05

Geinuine Subaru Synchro Set- $382.50

Below please select gearset type, Non Turbo or Turbo, 2006-2007 WRX, with or without bearings and synchros.