Vertex VTK22521B Cast Replica Top End Piston Kit - Standard Bore 66.36mm, Standard Compression control-steering-wheels 5 inches at center growing

5 inches at center growing to 2 inches at the shoulder

2009 Yamaha YFM450 Grizzly 4x4 Auto IRS

OEM# 502 0071 76

1990-1996 Suzuki GSX600F Katana

2021-2022 Polaris Sportsman 850 Premium

Vertex VTK22521B Cast Replica Top End Piston Kit - Standard Bore 66.36mm, Standard Compression control-steering-wheels 5 inches at center growingBore: 66. 36mm Compression: Standard Compression Sizing: Standard Bore All pistons are heat treated with a T 5 hardening and tempering cycle. All piston skirts are coated with a high tech molybdenum disulphite coating for faster break in time and increased piston life. Cast piston kits are gravity cast aluminum alloy (not forged) with 18% silicone content, which produces an extremely light but very strong piston. Forged pistons are forged from 2618