JE 367877 Pistons kit BMW N54B30 ULTRA SERIES (Set of 6 pic) Bore 84.00 Stroke 89.60 CR9.5:1 ymm_65 Description BMC FB663/01 129X250 AIR

Description BMC FB663/01 129X250 AIR FILTER PANEL

The seal washer and O-ring prevent leaks and ensure a tight seal

- 2 x Heavy duty high tensile alloy pistons fitted with high temp seals

875˝ Thread Size 3/8-16 washers included

This creates a more comfortable interior with improved acoustics

JE 367877 Pistons kit BMW N54B30 ULTRA SERIES (Set of 6 pic) Bore 84.00 Stroke 89.60 CR9.5:1 ymm_65 Description BMC FB663/01 129X250 AIRDESCRIPTION: Piston Set, 2618, Inv Dome Dish, 3. 307 Bore, 1. 244 CD, 0. 866, Pin Dia, Set of 6. Bore (in) 3. 307 Bore (mm) 84. Top Compression Ring Thickness 0. 0400 Second Compression Ring Thickness 0. 0480 Oil Ring Thickness 0. 111 Forging Type FSR Volume (cc) 21. 30 Series JE Ultra Series Piston Head Type Inv Dome Dish Pin Diameter (IN) 0. 866 Compression Height 1. 244 Make BMW Wrist Pin Style floating or press fit Floating Wall Type CHAMFERED