S&S CYCLE 124" Hot Set Up Kit® With S&S Cylinder Heads For '06-'17 HD® Dyna® models and all '07-'17 Non-Balanced Big Twins - Wrinkle Black - 900-0568

• The S&S Hot Set Up® kit for Twin Cams allows a Twin Cam owner to convert a stock engine to 124" using the stock crankcases
• Include S&S heads 91cc, 4.125” bore cylinders and forged 10.8:1 flattop pistons, S&S 4.625” stroke flywheel assembly, S&S .640” lift gear drive Easy Start cams, tappets, S&S adjustable pushrods, roller rocker arms, and all hardware, gaskets and instructions
• Fuel system is not included
• Made in the U.S.A.
• This project requires crankcase modifications. It is the responsibility of the person assembling the parts to check all clearances and assembly specifications

Fits Dyna 2006-2017 & Touring Models 2007-2016 with Twin Cam A Engine. except Twin-Cooled models

This 124" big bore/stroker Hot Set Up Kit® transforms a stock engine into a 124" monster. This kit includes S&S 4-1/8" bore pistons, big bore cylinders finished in wrinkle black powder coat, a dynamically balanced 4-5/8" stroke three piece flywheel assembly complete with S&S heavy duty connecting rods and intergal mainshafts, S&S 640 gear drive Easy Start camshafts, S&S chromoly steel adjustable pushrods, S&S premium tappets,S&S Super Stock 91cc cylinder heads. When installed the kit yeilds a 124" engine with a compression ratio of 11:1. Although the engine is .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. No fuel or ignition system is included. However, for the best results, a larger EFI throttle body, performance intake and performance exhaust are recommended. The EFI system must be recalibrated. Although not mandatory, we recommend adding an oil cooler to bikes ridden in warmer climates. S&S does not recommend compression ratios higher than 10:1 for Tri Glide® or other three wheel models (including conversions) due to extra loads caused by the lugging nature of these bikes. Detonation and subsequent engine damage may result.

NOTE: Not for use on twin cooled motors.
NOTE: Not recommended for compression ratios higher than 10:1 for Tri Glide or other three wheel models (including conversions) due to extra loads caused by the lugging nature of these bikes. Detonation and subsequent engine damage may result.
NOTE: Crankcases must be bored to accept the larger 4-1/8" bore cylinders. S&S strongly recommends retrofitting 2003-'15 model crankcases to accept a Timken sprocket shaft bearing. EFI engines will require tuning. S&S recommends Dynojet® Power Vision® flash tuners Not legal for sale or use on CA or EPA pollution-controlled motorcycles

Fitment Guide

Specs