S&S CYCLE 0.650" Sidewinder® Valve Spring Kit

S&S CYCLE 0.650" Sidewinder® Valve Spring Kit Upgrade your Twin Cam or XL engine with the S&S CYCLE 0.650" Sidewinder® Valve Spring Kit , engineered for reliable valve control at higher performance levels. This complete kit includes everything needed for a proper spring setup. Key Features Complete kit includes springs, upper and lower collars, and keys Designed for valve lift up to .650" Installed height spec: 1.860" / 178 lbs Spring open pressure: 376 lbs at max lift Supports up to 6500 rpm Made in the USA for quality and consistency Specifications Type: Valve Spring Kit Model: Sidewinder Riding Style: Street Application: Intake Application: Exhaust Spring Seat Pressure: 178 lb Spring Open Pressure: 376 lb Spring Lift: 0.650" Units: Kit Weight: 1.4 lbs  |  Dimensions: 8.1" x 4" x 1.6"