Vertex VTK22521B Cast Replica Top End Piston Kit - Standard Bore 66.36mm, Standard Compression propulsion-bilge Adjustable DSP Noise Cancellation via

Adjustable DSP Noise Cancellation via dual advanced beam forming (ABF) microphones

1937-1948 Harley Davidson UL

Replaces OEM #45984-87

Longer more comfortable rides

Floating Soft Knuckle

Vertex VTK22521B Cast Replica Top End Piston Kit - Standard Bore 66.36mm, Standard Compression propulsion-bilge Adjustable DSP Noise Cancellation viaBore: 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