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Part number: 8525XX
Product Details
Wiseco Pistons 8525XX Piston Rings
Products specifications
2nd Ring 1.2mm Cast Iron / Napier Hook
Bore 85.25mm
Oil Ring 3/16 3-Piece Std Tension
Size .039-.047-2.8mm
Top Ring 1mm Alloy Steel / Gas Nitrated
High Performance Piston Rings

Wiseco 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 extra material thickness around the intake valve.

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