KB Keith Black Performance Motorcycle Pistons

KB Keith Black Performance Motorcycle Pistons Parts & Accessories

66 products

KB Keith Black Performance Pistons are made by UEM and cover Sportster, Twin Cam, and big-bore conversion applications. Available in cast hypereutectic 390 alloy and forged 4032 low-expansion alloy, with coated skirts for reduced friction and offset wrist pins for quieter engine operation.

The Super Duty Series adds anodised top ring grooves and Line2Line Adaptive Skirt Technology to reduce piston rock. Built for engine builders who want reliable power gains without compromising on quality.

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