Big-bore bolt-in kit for compatible Harley-Davidson® VVT models with 114"/117" engines and a 4.5" stroke M8 design. It increases displacement to 132" without case machining.
Built around 4.32" bore cylinders, 11.0:1 forged pistons, an S&S oil pump/cam plate with blue anodized finish, Quickee pushrods, premium tappets, and S&S 550 cams for big-bore applications.
Also includes removable passage plugs for service access, independent scavenge sections, debris screens in both pickups, a cam-chest magnet to help catch debris, increased oil flow capacity, and an adjustable pressure relief valve.
Made in the USA. Not for Trike models. Intake/rocker cover gaskets are not included.