4th Drive Gear TY856 6MT Ratio 1.137 Water Pipe Tooth Count: 11 / 17

Tooth Count: 11 / 17

EJ253 MY09-13

A Y-split and flanges cast from stainless resist distortion for leak free connections and ensure outstanding durability that will stand the test of time

5L Non-Turbo MY08-10

4th Drive Gear TY856 6MT Ratio 1.137 Water Pipe Tooth Count: 11 / 174th drive gear for 6 speed manual transmissions with trans ID codes starting with "TY856". This is the taller (longer) gear ratio of the two available options and was used on USDM STI MY07 21, Legacy Spec B, and Forester STI. It is also used in our RST F145Kit (2nd 6th longer ratio) gear set. Optional REM ISF (superfinishing) treatment. ISF is a precisely controlled treatment that reduces surface roughness left from the machining processes thereby