S&S Cycle Big Twin Forged Piston Kit - 3.520" Bore - +.020" - 106-5521

Upgrade your Big Twin engine with the S&S Cycle 80" Piston Kit, designed for superior performance and durability. This kit provides everything you need for a complete piston replacement, ensuring optimal engine function and longevity.

Description

The S&S Cycle Piston Kit is engineered specifically for 80" Big Twin motors, delivering enhanced strength and reliability through its forged piston construction. The 3.520" bore size ensures a precise fit, while the kit includes pistons, rings, wristpins, and clips for a comprehensive installation. This kit is designed to provide a 9.0:1 compression ratio, optimizing power and efficiency for your engine. Manufactured in the U.S.A., this piston kit reflects S&S Cycle's commitment to quality and performance.

Features & highlights

• Forged pistons provide superior strength and durability for demanding engine conditions.
• Complete kit includes pistons, rings, wristpins, and clips for a hassle-free installation.
• Designed for 80" Big Twin motors, ensuring a precise fit and optimal performance.
• Provides a 9.0:1 compression ratio, enhancing engine power and efficiency.
• Made in the U.S.A. ensuring top-quality materials and manufacturing standards.
• Optimized for use with standard length connecting rods, simplifying the upgrade process.

Technical specifications

• Brand: S&S Cycle
• Product Name: Piston Kit
• Displacement: 80"
• Bore Size: 3.520"
• Bore - Oversize: +0.020"
• Stroke Length: 4-1/4"
• Compression Ratio: 9.0:1
• Piston Material: Forged
• Wrist Pin Deck Height: 1.270"
• Type: High Compression
• Units: Kit

Important to know

This kit requires the use of connecting rods with a rod length of 7.440" (standard length OEM #24281-74A connecting rods). The use of earlier connecting rods with a rod length of 7.470" (OEM # 24281-41A) will result in a slight increase in the compression ratio of about one-half point and may also result in clearance problems. Check all piston-to-cylinder head clearances carefully when using early style rods.