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PERFORMANCE MOTORCYCLE PARTS AND KITS FOR AMERICAN V-TWINS

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.650" Lift Sidewinder® Valve Spring Kit

 
$150.95
SKU:
900-0050
Qty:
 
Dealer Only Item

 
 
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Description
Product Reviews
Specs
Fitment
Instructions

Fitment:

  • 1994-'04 big twins (5/16" valve stems)
  • 1984-’99 Evolution® with stock heads
  • 1986-2003 Sportster® models (5/16" valve stems)

 

Manufactured from ultra clean high silicon Kobe alloy wire then micro shot peened and nitrided. CNC machined 9˚ locks, high performance conical single wire spring, and chromoly forged retainers.

 

 

 

 

Sidewinder®  Valve Spring Specs
Lift  Installed Height    Seat Force    Force @
Max lift
 
 Max RPM  
 .650"    1.860"    178 lb.    376 lb.    6500  

 

 

 

Note: S&S recommends roller rocker arms be used when lifting over .585"

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