S&S Cycle 910-0845A 132 Inch Big Bore Cylinder Kit Wrinkle Black with Highlighted Fins for M8

The S&S Cycle 910-0845A represents the biggest Big Bore conversion possible with a slip-in cylinder kit for Harley-Davidson Milwaukee-Eight engines. This premium kit features a massive 4.320-inch bore that transforms a 107-inch M8 engine to 129 cubic inches, or a 114-inch engine to an impressive 132 cubic inches of displacement.

Key Features:

• 4.320-inch bore diameter cylinders with wrinkle black finish and highlighted cooling fins
• Bolt-on installation without requiring crankcase machining or flywheel rebalancing
• Cylinders constructed from premium aluminum castings with cast-in iron liners
• Multi-layered steel (MLS) head gaskets for superior sealing
• Retains original engine serial numbers and stock engine height
• Complete kit includes cylinders, pistons, rings, and all necessary gaskets (head, base, and exhaust)
• Includes cam cover badge and all installation hardware
• Made in the USA

This high-performance big bore kit is designed for 2017-2023 Harley-Davidson Touring and Softail models equipped with Milwaukee-Eight 107, 114, or 117 cubic inch engines. Professional installation by a qualified technician is recommended to ensure proper clearances and assembly specifications are met.