S&S Cycle Sidewinder Big Bore Kit - Silver - 910-0642

Upgrade your Harley-Davidson engine with the S&S Cycle Bolt-In Sidewinder® 4" Big Bore Kit. This kit transforms your existing engine into a powerhouse, delivering increased displacement and enhanced performance without the need for extensive modifications.

Description

The S&S Cycle Big Bore Kit is designed for a straightforward bolt-in installation, eliminating the need for machining, balancing, or splitting the crankcases. The install can even be performed while the engine is still in the frame. This kit features cast ductile iron sleeves integrated into cast aluminum cylinders, ensuring superior heat transfer and durability. Specifically, this kit boosts 88" engines to 100", and with a 10.5:1 compression ratio (when used with stock 85cc heads), it creates a streetable and dependable engine. The increased displacement provides a noticeable boost in torque and horsepower, improving overall performance. This big bore kit offers increased displacement and horsepower, making it an excellent choice for riders looking for more power and responsiveness. Furthermore, the enhanced design works exceptionally well with performance camshafts, allowing you to fine-tune your engine's characteristics to your specific riding needs. This complete kit provides everything needed for a successful installation.

Features & highlights

• Bolt-in installation: No machining or engine disassembly required.
• Increased Displacement: Upgrades 88" engines to 100" for enhanced power.
• Superior Heat Transfer: Cast ductile iron sleeves in cast aluminum cylinders keep your engine running cool.
• Optimized Compression: 10.5:1 compression ratio for streetable performance and responsiveness.
• Complete Kit: Includes cylinders, pistons, rings, pins, clips, and gaskets.
• Durable Construction: Forged pistons and high-quality materials ensure long-lasting reliability.

Technical specifications

• Brand: S&S Cycle
• Product Name: Cylinder and Piston Kit
• Type: Big Bore Kit
• Displacement: 100"
• Bore Size: 4.000"
• Stroke Length: 4"
• Compression Ratio: 10.5:1
• Color/Finish: Silver
• Units: Kit

Important to know

This kit is not compatible with S&S 79cc heads.