S&S Cycle Big Twin Piston Kit - 3.4375" Bore - Standard - 106-5495

Upgrade your classic Big Twin with the S&S Cycle Forged 74" Piston Kit. This kit delivers superior strength and performance for your 74" stock motor. Made in the USA with meticulous attention to detail, these pistons are engineered for reliability and optimal power output.

Description

The S&S Cycle Forged Piston Kit is designed to breathe new life into your 74" Big Twin engine. Forged from high-quality materials, these pistons offer exceptional durability and resistance to wear, ensuring long-lasting performance. The kit includes everything you need for a complete piston replacement, providing a hassle-free installation experience. The 74" displacement and 8.0:1 compression ratio deliver a balanced combination of power and efficiency, suitable for various riding conditions. The 1.436" wrist pin deck height ensures proper fitment and function. Whether you're restoring a vintage motorcycle or enhancing its performance, this piston kit is an excellent choice.

Features & highlights

• Forged pistons provide superior strength and durability for demanding applications.
• Complete kit includes pistons, rings, wristpins, and clips for a comprehensive installation.
• Designed for 74" stock Big Twin motors, ensuring proper fitment and performance.
• Made in the U.S.A. for quality and reliability.
• Optimized for a 8.0:1 compression ratio, balancing power and efficiency.

Technical specifications

• Brand: S&S Cycle
• Piston Material: Forged
• Bore Size: 3.4375"
• Displacement: 74"
• Compression Ratio: 8.0:1
• Stroke Length: 3.968" (3-31/32")
• Wrist Pin Deck Height: 1.436"
• Type: Low Compression

Important to know

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