2001-2018 Allison Billet C2 Hub

TC Products Allison 1000 Billet C2 Hub. TCS has addressed the early failure of the C-2 clutch hub in high torque/horsepower applications with this new billet steel clutch hub.

-Made from 4140 HTSR billet steel.
-Zinc Chromate finish.
-Spline is lengthened .125" for more contact, plus a spline boss diameter increase of .100" for added strength.
-No weight penalty for strength. The TCS hub is only 2.8oz. heavier than the O.E.M. part.
-Comes with a modified thrust washer.
-Machining modification to P1 Sun Gear Required. (Instructions attached in PDF)