Beehive Valve Spring Kits For Evolution Models & Twin Cam

Weight (lbs): 1.28 The centerpiece of both kits are the advanced COMP ® Beehive ™ Valve Springs, which deliver a host of well documented beneFits: Harley over conventional valve springs With the limited valve spring installed height of the Harley V-Twin engine, small spring pocket and today's higher lift cams, the VThunder engineers faced a challenge in designing an all-inclusive kit that would provide proper installation fo the Beehive ™ Valve Springs After extensive testing and research, the proper combination of parts has been identified and is now available Both kits utilize the Beehive ™ Valve Springs, but the 61378 kit allows for use of the stock 7mm valves and stock locks and the 61377 kit is designed for 5-16" valves and includes high performance 10° Super Locks ™ for added strength Spring Specifications: 1.185"-1.454" O.D. .731"-1.00" I.D. 160# @ 1.800" (.650 Lift) 140# @ 1.850" (.700 Lift) 400# @ 1.150" Coil bind 1.100" Spring rate 400 V-Thunder Fits: Harley Big Twin Evolution 1984-1999, Twin Cam 1999-2004 & Sportster 1986-2003 By: COMPETITION CAMS