BEEHIVE VALVE SPRING KITS FOR EVOLUTION MODELS & TWIN CAM

• THE CENTERPIECE OF BOTH KITS ARE THE ADVANCED COMP^® BEEHIVE^™ VALVE SPRINGS , WHICH DELIVER A HOST OF WELL DOCUMENTED BENEFITS 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

• 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