Supercharger Pulley ZPE GripTec
Whipple 2.9L (Early 2000 On) 3.75" 10-Rib

Billet 7075-T6 aerospace grade aluminium
(stronger & harder than 6061 T6).

Patented GripTec micro machining technology.
Improves belt grip.

Black anodized.

10-Rib.

4-bolt design.