R53 Wiseco 77.5mm Piston Ring Set ZL1 The DW65 series of pumps

The DW65 series of pumps are characterized by their specialty fitment

while the high speed set-up

It virtually eliminates unwanted movement that can affect gear selection and alignment of the drive shaft without compromising NVH performance

and manufactured with a polished finish

* Bosch sensor included

R53 Wiseco 77.5mm Piston Ring Set ZL1 The DW65 series of pumpsWiseco Pro Tru line of pistons utilize a plasma moly pre gapped ring set for the budget minded consumer. Wiseco Sport compact kits include the high quality NPR XX rings, which are the best quality steel nitrided top rings and napier style 2nd rings. Our late model EFI lineup and several small block Chevy pistons are designed around the our 1. 2mm Steel Nitride and napier GFX ring sets. Many of our big block sets utilize a . 043 back cut top ring for