Competition Clutch Lightweight Steel Flywheels (ST suffix) are recommended for naturally aspirated and/or street driven applications. This flywheel preserves low-end torque and driveability. Well-suited for Gravity, Stage 1 and Stage 2 clutch applications. Made of 4140 forged steel and are a one-piece design. All flywheels are SFI certified. Not all applications have the ST and STU versions available. Flywheel weights vary from 8lbs to 18lbs depending on application.
This Part Fits:
| Year | Make | Model | Submodel | 
| 2003-2007 | INFINITI | G35 | Base | 
| 2004-2006 | INFINITI | G35 | X | 
| 2005 | Nissan | 350Z | 35th Anniversary Edition | 
| 2003-2006 | Nissan | 350Z | Base | 
| 2003-2006 | Nissan | 350Z | Enthusiast | 
| 2005-2006 | Nissan | 350Z | Grand Touring | 
| 2003-2005 | Nissan | 350Z | Performance | 
| 2003-2006 | Nissan | 350Z | Touring | 
| 2003-2006 | Nissan | 350Z | Track |