KB Performance Pistons has now added more Harley-Davidson applications to its range of 4032 alloy forged pistons. Designed for 113” engine combinations using the stock 4.375" stroke, they are available in 4.060”, 4.065” and 4.070” bore sizes.
Featuring an anti-friction skirt coating, they are for both standard 85cc Twin Cam heads at 10.5:1 and 95cc MVA heads at 9.5:1; the other also fits both 85cc Twin Cam heads at 11:1 and 95cc MVA heads at 10:1.
Parent company United Engine & Machine say their KB pistons are "carefully crafted with specific applications in mind. The line features a variety of superior design elements, proven engineering differences, and specialty manufacturing processes. Our extensive in-house manufacturing capabilities enable the complete development and manufacture of nearly every engine's piston needs, ensuring a precision balance, finish and concentricity."
Based in Carson City, Nevada, KB also introduced a new line of forged piston designs for Harley engine applications earlier this year. Described as quieter and delivering even greater power gains than other KB designs, they are made in low-expansion 4032 alloy for a tighter piston-to-wall clearance and feature longer, often coated skirts and offset wrist pins.
KB PERFORMANCE PISTONS
www.uempistons.com