ENGINE SECTION RED PART NUMBERS INDICATE NEW PARTS 6-26 1 2 3 4 5 6 7 8 9 10 11 CONTENTS REFERENCE GENERAL EXHAUST FUEL DRIVE TRAIN ENGINE WHEEL CONTROL FRONT END FRAME ELECTRICAL Valve Spring Kits PERFORMANCE VALVE SPRING KIT FOR EVOLUTION MODELS & TWIN CAM Part 61417 REPLACEMENT VALVE SPRING AND COLLAR SETS FOR PANHEAD, SHOVELHEAD & SPORTSTER • These premium quality Replacement Valve Spring and Steel Collar Sets are American made and are designed for OE replacement. • They meet or exceed factory OEM specifications. • Sold in sets of 4 with collars and retainers. Model & Year Part # Panhead/Shovelhead 61330 1948/1979 Sportster 1957/Early 1981 61335 Fits Big Twin Evolution 1984/1999, Twin Cam 1999/2004 & Sportster 1986/2003 • Use with cams up to .650” lift. • Does not require cylinder head machining for installation. • Includes titanium top collars. • Installed height of 1.800” creates seat pressure of 180 pounds. • At open height of 1.150” creates seat pressure of 400 pounds. • Includes valve keys. BEEHIVE VALVE SPRING KITS FOR EVOLUTION MODELS & TWIN CAM • The centerpiece of both kits are the advanced COMP® BeehiveTM Valve Springs, which deliver a host of well documented benefits over conventional cylindrical 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 allinclusive kit that would provide proper installation of the BeehiveTM Valve Springs. • After extensive testing and research, the proper combination of parts has been identified and is now available. • Both kits utilize the BeehiveTM 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-degree Super LocksTM for added strength. • O.D. 1.185”/1.454” • I.D. .731”/1.00” • 160# @ 1.800” (.650 Lift) • 140# @ 1.850” (.700 Lift) • 400# @ 1.150” • Coil bind 1.100” • Spring rate 400 Spring Specifications Model & Year Part # Big Twin Evolution 1984/1999, Twin Cam 1999/2004 61377 & Sporster 1986/2003 Twin Cam 2005/2017 61378 • Both kits Interference fit to reduce harmonic and control spring surge. • No machining required for installation. • .465” lift kit with titanium valve spring collars for Panhead & Shovelhead with stock diameter valves. • .490” cam lift kit for Ironhead Sportster has steel top collars and stock O.D. springs, which have 20% more pressure than stock. • Ironhead Sportster kit can be used with stock lift cams and high lift cams up to .490”. • Kits sold skin packaged for display and storage. Note: Do not exceed recommended lift, due to the potential high stress on the springs. 60296 Model & Year Lift Part # Panhead & Shovelhead all years .465” 60347 Ironhead Sportster all years .490” 60296 HIGH LIFT VALVE SPRING KITS FOR PANHEAD, SHOVELHEAD, & IRONHEAD SPORTSTER
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