S&S Cycle M8 Big Bore Kit - 4.320" Bore - 132ci - Black - 910-1009A

Unleash the full potential of your Harley-Davidson engine with the S&S Cycle 132"/136" Big Bore Kit. This high-compression kit is engineered for enthusiasts and professionals seeking a significant boost in power and performance. Experience enhanced throttle response and increased horsepower throughout the RPM range.

Description

The S&S Cycle Big Bore Kit transforms your motorcycle's engine, delivering a substantial increase in displacement and compression. Designed for compatibility with 114" and 117" engines using 4.5" stroke flywheels, this kit provides a noticeable improvement in overall engine performance. For those seeking the ultimate upgrade to 136", pairing this kit with an S&S flywheel featuring a 4-5/8" stroke (sold separately) is required. The cylinders feature a durable black finish with non-highlighted fins, providing excellent heat dissipation while maintaining a sleek, aggressive look. Installation is straightforward for experienced mechanics, ensuring a precise fit and optimal performance. This kit is perfect for riders looking to maximize their engine's capabilities, whether for performance riding or competitive applications.

Features & highlights

• Dramatically increases horsepower and torque for superior performance.
• High compression design maximizes combustion efficiency.
• Durable black cylinders with non-highlighted fins for excellent heat dissipation.
• Designed for compatibility with 114" and 117" engines (with specific flywheel requirements).
• Transforms your engine into a 132" or 136" powerhouse.
• Engineered for a precise fit and easy installation (professional installation recommended).
• Experience enhanced throttle response and improved rideability.

Technical specifications

• Brand: S&S Cycle
• Bore Size: 4.320"
• Displacement: 132", 136"
• Stroke Length: 4.5", 4-5/8"
• Compression: High Compression
• Cylinder Finish: Black, Non-Highlighted Fins

Important to know

This 132" high compression kit is designed to work with 114" and 117" motors that have a 4.5" stroke flywheel ONLY. To achieve the 136" big bore, an S&S flywheel with a 4-5/8" stroke is required and must be purchased separately. Professional installation is highly recommended to ensure proper fitment and optimal performance.