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Upgrade your motorcycle's valve train with the S&S CYCLE Sidewinder Valve Spring Kit, designed specifically for Twin Cam models from 1999 to 2004 and XL models from 1986 to 2003. This comprehensive kit includes high-quality springs, upper and lower collars, and keys to ensure optimal performance and durability. Engineered to handle a valve lift of up to 0.650 inches, it provides reliable operation at high RPMs, with a maximum of 6,500 rpm, making it suitable for both street and performance applications. The springs are calibrated to maintain proper valve control, reducing valve float and improving overall engine responsiveness. Made in the USA, this kit offers a robust solution for enthusiasts seeking to enhance their engine's performance and longevity. Installation is straightforward, with all necessary components included to facilitate a seamless upgrade process.
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