Manley Valve Spring Set Part Number 99217 for Harley Davidson XL (1957-1966)

Manley .490 valve spring kit features OD springs with steel top collars. Interference fit to reduce harmonics and control spring surge.

Upgrade your Harley Davidson XL engine with the Manley Valve Spring Set, part number 99217, designed for models from 1957 to 1966. These high-performance springs provide 20% more pressure than stock, ensuring improved valve control and durability under demanding riding conditions. The installation is straightforward, requiring no machining, and the set is compatible with stock lift cams up to .490 inches, making it a perfect choice for both restoration and performance enhancements. The springs use the stock lower collars, maintaining original
Fitment
Harley Davidson XL 1957
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