These gears are a great enhancement for subaru 5-speed. The gear set offers 1-5 set that upgrades the 5th gear for the track customers who are not worried about driving on the street. These gears are significantly stronger than both stock and RA sets. They bode a wider and deeper tooth profile on all gears. Offered only in a synchronized helical version, mFactory's set has an almost stock like drivablility with minimal noise. Gear Ratios 3.27/2.286/1.667/1.238/0.958 Application: Subaru WRX