• Fits Big Twin Evolution 1984/1999, Twin Cam 1999/2004 and Sportster Evolution 1986/2003 engines
• Andrews high lift spring sets are manufactured from the finest quality spring wire, wound and treated to produce the needed pressure for the high lift cams of today
• At 1.800" installed height valve seat pressure will be approximately 160 pounds
• When installed with a set of Andrews spring collars, cam lifts producing up to .550"+ valve lift can easily be accommodated without machining the heads

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