This billet steel C-2 clutch hub for GM Duramax Allison 1000 transmission addresses early failure of the C-2 clutch hub in high torque/horsepower applications.
- Made from 4140 HTSR billet steel
- Lengthened spline (additional 1/8″) for more contact, plus a spline boss diameter increase of .100″ for added strength
- Adds only 2.8 oz over OEM part, for no weight penalty for strength
- Includes modified thrust washer
This hub requires machining modification to P1 Sun Gear Required (see downloads below).