S&S Cycle 129" Big Bore Cylinder Piston Kit Harley M8 Milwaukee 8 107"

Upgrade your Harley-Davidson Milwaukee-Eight engine with the ultimate performance boost from S&S Cycle. This Big Bore Kit is engineered to provide a massive increase in displacement, delivering the torque and horsepower you need without compromising the structural integrity of your motorcycle. Designed for riders who demand more power while maintaining a factory-clean look, this kit ensures your engine performs at its peak.

Installation is streamlined to be as efficient as possible. The kit is designed to fit seamlessly with your stock components, allowing you to achieve high-performance results while keeping the original profile of your bike intact. By utilizing precision engineering, S&S Cycle ensures that this upgrade integrates perfectly with your existing setup for long-term reliability and power.

• Original engine serial numbers are retained
• MLS (Multi-Layered Steel) head gaskets for maximum sealing and durability
• Retains stock engine height to ensure fitment with existing components
• Stock bolt pattern for straightforward installation
• Works with stock crankcase
• Not compatible with VVT models