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The S&S Cycle 3-5/8 inch Big Bore Cylinder and Piston Kit offers a reliable upgrade for your Harley-Davidson engine or a complete build for an 88-inch powerhouse. Designed for precision and durability, this kit includes high tensile cast iron cylinders with a 3-5/8 inch bore, forged pistons with rings and wristpins, head gaskets, stainless steel head bolts with washers, base nuts, and base gaskets. Perfect for building a new engine or replacing components in an existing S&S stock bore stroker setup, it provides a significant performance boost while maintaining the classic Harley feel.
The kit features a compression ratio of 7.5:1, making it suitable for street riding and mild performance applications. It can be installed in engines with 4-1/4 inch flywheels, but requires crankcases to be bored to accommodate the larger cylinders. Additionally, the stock flywheel assembly should be rebalanced to ensure optimal engine performance and smooth operation. Crafted in the USA, this kit guarantees quality and compatibility, making it an ideal choice for enthusiasts seeking to enhance their motorcycle's power output and reliability. Whether you're building a new engine or upgrading an existing one, the S&S Cycle 91-9001 Big Bore Kit delivers excellent value and performance. It is designed to meet the demands of riders who want to improve their bike's torque and horsepower without sacrificing dependability. Proper installation involves machining the crankcases and balancing the flywheel assembly, ensuring a seamless fit and long-lasting performance. Trust S&S Cycle's reputation for quality American-made motorcycle parts, and enjoy the enhanced riding experience this kit provides.Features:
US Dollars
