S&S Cycle 910-0681A 124ci Big Bore Kit for Harley M8 107 Engines All Black

The S&S Cycle 124" Big Bore Kit transforms 107" Milwaukee-Eight engines into powerful 124 cubic inch powerplants. This All Black finish kit features an updated cylinder design to fit both Gen 1 and Gen 2 M8 models, making it compatible with a wide range of Harley-Davidson motorcycles including Softail, Touring, and other M8-powered bikes.

Key Features:

• Bolt-on kit requires no machining
• Complete kit includes cylinders, pistons, rings, and gaskets (head, base, and exhaust)
• Includes all gaskets and hardware required for installation
• All black finish for a stealthy, custom appearance
• 4.250" bore provides substantial displacement increase
• Made in the U.S.A.

Installation Notes:

• This project requires a skilled technician
• Not recommended for Tri-Glide or other three-wheel models due to the lugging nature of these bikes
• Professional installation and proper tuning with an aftermarket tuner highly recommended

This big bore kit delivers significant horsepower and torque gains over the stock 107" engine, perfect for riders seeking maximum performance from their Milwaukee-Eight powered Harley-Davidson.