S&S CYCLE 124" Hot Set Up® Engine Performance Kit — 4.625" stroke, 4.125" bore, Wrinkle Black powder-coated – 06-17 Dyna, 07-16 Touring, 07-17 CVO, 09-16 Trike, 07-17 Softail

🔧 The 124" Hot Set Up® Engine Performance Kit converts compatible non-balanced Twin Cam engines to 124" displacement using the stock crankcases. This complete kit is built for durability and performance and includes S&S Super Stock® 91 cc cylinder heads, 4.125" bore cylinders, forged big-bore flattop pistons, an S&S 4.625" stroke flywheel assembly, S&S 640 gear drive Easy Start cams, premium tappets, adjustable pushrods, roller rocker arms, and all required hardware, gaskets and instructions.

• For non-balanced Twin Cam models.
• Converts a stock engine to 124" using the stock crankcases.
• Includes S&S Super Stock® 91 cc cylinder heads and all major rotating and valvetrain components.
• Made in the USA. 🇺🇸

⚠️ Important notes: the EFI system must be recalibrated after installation. Fuel or ignition components are not included. All clearances and assembly specifications must be checked during build. Although the assembled engine is 0.960" taller than stock, no frame clearance problems have been reported and a stock EFI throttle body will fit because the head manifold mounting surfaces are specially machined to accept a stock-length manifold.