The transfer gear set available for the 6 speed STI Subaru gearbox is designed to handle the power from the most powerful of Subarus on the market. With its torque rating of 1200NM, it is an ideal upgrade for a standard component that is quite weak and not up to the standard in race cars.
Replacement is without modification and quite swift.
Ratios available are
ALL PARTS REM ISOTROPIC SUPERFINISHED as standard