JIMS Valve Spring Kit Evolution Big Twin
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Regular price
$103.95
Sale price
$103.95
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Delivery Estimate Nov 27 - Dec 01
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Incorporate an interference double-spring design with damper to control harmonics. Engineered for maximum performance in severe applications such as high compression and big-inch street motors. 0.600" spring sets are 1.460" OD and have a pressure of 125 lb. when closed and 275 lb. at 0.500" lift; installed height should be 1.800"; coil bind occurs at 1.150". Sold in a set of four springs (enough for one engine). Made in the USA
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