Sidewinder .650" Valve Spring Kits / '88-'17 Models

Unlock the full potential of your Harley with the S&S Cycles Sidewinder® .650" Valve Spring Kits, engineered to propel your ride into new realms of power and durability. Perfect for '88-'17 Harley models, this comprehensive kit is designed to support valve lifts up to .650" (1.65 cm), ensuring your engine operates at peak efficiency without compromise. What's Included: High-Performance Springs: Specially designed for optimal tension and durability. Precision Engineered Collars and Keys: Upper and lower collars along with keys for a perfect fit and performance reliability. Impressive Specs: With 1.860" (4.72 cm) installed height, these springs can handle 178 lbs. (80.74 kg) of force, escalating to 376 lbs. (170.55 kg) at maximum lift, ensuring your engine breathes freely and efficiently. RPM Ready: Designed to withstand up to 6500 rpm, making them ideal for high-performance scenarios. Why Choose S&S Cycles Sidewinder®? The Sidewinder® .650" Valve Spring Kits are not just about enhancing performance; they're about transforming your Harley into a machine that responds with vigor and vitality, pushing the boundaries of what you thought possible. Crafted with precision and care in the U.S.A., these kits represent the pinnacle of motorcycle engineering, offering unmatched reliability and strength. Proudly Made in the U.S.A. Embrace the quality and craftsmanship of American-made products with S&S Cycles, a brand synonymous with excellence and innovation in the motorcycle industry. Each component in the Sidewinder® .650" Valve Spring Kit exemplifies our commitment to delivering the best performance upgrades on the market.