Dramatically improved engine response and acceleration, mild to moderate gear rattle; Heat-treated forging for strength and toughness, induction-hardened ring gears for maximum life; One piece construction allows less opportunity for failure and provides uniform efficient heat transfer from the clutch disc. No more warped inserts or loose ring gears; Recommended for race use; Forged, CNC machined and dynamically computer balanced for smooth high RPM reliability
This Part Fits:
| Year | 
Make | 
Model | 
Submodel | 
| 2004-2014 | 
Subaru | 
Impreza | 
WRX STI | 
| 2007,2011-2014 | 
Subaru | 
Impreza | 
WRX STI Limited | 
| 2010 | 
Subaru | 
Impreza | 
WRX STI Special Edition | 
| 2007-2009 | 
Subaru | 
Legacy | 
GT spec.B | 
| 2015-2021 | 
Subaru | 
WRX STI | 
Base | 
| 2015 | 
Subaru | 
WRX STI | 
Launch Edition | 
| 2015-2021 | 
Subaru | 
WRX STI | 
Limited | 
| 2016 | 
Subaru | 
WRX STI | 
Series.HyperBlue |