Std Dome Top Pistons with 9.5:1 Compression Ratio. Fits Big Twin 1984-1999. - Keith Black Pistons

Features & Benefits:-

Bore = 3.498″

Stroke = 4.250″

Forged 4032 Alloy is an 11% silicon alloy that is formed in a forging press then fully machined

Best resistance to cracking in hi-comp performance applications

Require.001″ wider piston to wall clearance

Complete kit includes: two pistons, rings, wrist pins and clips.

Tech Tips:-

9.5:1 Compression Ratio with 85cc Head Chamber Volume.

Follow Ring End Gap & Piston to Cylinder Clearances as per the supplied Manufacturers Instructions.

Pull the engine down first & measure the existing bore to determine if oversize pistons are required PRIOR to purchase, we do not take back piston kits. The onus is on the assembling technician to validate the cylinders & required pistons.