Procharger
Procharger- 8 Rib Supercharger Pulleys
(1)
Select the pulley size you need.
These pulleys are made by procharger and will fit - P1SC, P1SC-1, P1SC-2, D1, D1SC, F-1D, F1, F1-A, F1-C, F1-R
The 3.4 inch pulley has very noticeable difference good product I wouldn't recommend going any. Smaller tho for the 6 rib for slippage. Don't have any with with the 3.4