124" Hot Set Up® Engine Performance Kit

124" Hot Set Up® Engine Performance Kit

For balanced Twin Cam models

Converts a stock engine to 124" using the stock crankcases

Includes S&S Super Stock® 91 cc cylinder heads, 4.125" big bore cylinders, forged big bore flattop pistons, S&S 4.625" stroke flywheel assembly, S&S 640 gear drive Easy Start cams, S&S premium tappets, S&S adjustable pushrods, roller rocker arms, and all hardware, gaskets and instructions

Made in the USA

EFI system must be recalibrated.

Fuel or ignition system not included.

All clearances and assembly specifications will need to be checked.

Although the engine is 0.960" taller than stock, there are no frame clearance problems, and a stock EFI throttle body will fit because the manifold mounting surfaces of the heads have been specially machined to fit a stock length manifold.