Description
- 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 enxtensive 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″/1.45 4″ O.D.
- .731″/1.00″ I.D.
- 160# @ 1.8000″ (.650 Lift)
- 140# @ 1.850″ (.700 Lift)
- 400# @ 1.150″
- Coil bind 1.100″
- Spring rate 4000
| V-Thunder Fits Big Twin Evolution 1984/1999, Twin Cam 1999/2004 & Sportster 1986/2003 |
*** PLEASE NOTE: This image may not exactly match the item listed. This image maybe a manufacturer’s photo and is meant to be representative of the item listed. Some images may show accessories that are not included with the product.
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