**WE HAVE THESE IN STOCK AND ON THE SHELF**
Made from 4140 HTSR material.
18% increase of the spline contact area.
30% increase in wall thickness of the spline boss.
No weight penalty for strength. The TCS hub is only 2.8oz heavier than stock.
Comes with a modified thrust washer.
Requires the P1 Sun Gear to be bored out or purchase this Allison P1 Sun Gear Machined for Sleeved/Billet C2 which is already machined to fit the upgraded billet C2 clutch hub.
Compliments the billet planet upgrade also.
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GREAT PRODUCT had to wait on the machined sun gear though.