Designed for non-counterbalanced Twin Cam engines.
Allows you to convert a stock engine to a 124 cu in configuration while retaining the original cases.
Includes S&S Super Stock® 91 cc heads, 4.125" cylinders, forged big-bore flat-top pistons, a 4.625" S&S crankshaft, S&S 640 Easy Start gear-drive cams, premium S&S tappets, adjustable S&S pushrods, roller rockers, plus all required hardware, gaskets, and installation instructions.
Made in the USA.
Requires EFI system recalibration after installation.
Neither the fuel nor the ignition system is included with the kit.
All clearances and assembly specifications must be checked precisely.
Although the engine is 0.960" taller than stock, it presents no frame-clearance issues, and the stock EFI throttle body fits because the manifold mounting surfaces on the heads are machined for a standard-length manifold.