Find A Local Dealer

Facebook

Youtube

PERFORMANCE MOTORCYCLE PARTS AND KITS FOR AMERICAN V-TWINS

S&S Cycle logo
0 Items
$0.00

4 Inch Bore Head Kit

 
 
 
Back to List
 
$0.00
Qty:
 
Description:
 
Dealer Only Item

 
 
Facebook Twitter
 
 
 

These heads for S&S 4 inch bore engines are machined with a modified "bathtub" style combustion chamber. These heads were designed for use with a flat topped piston, special S&S cylinders, and wider S&S special application crankcases. With a large "squish" area these heads create more combustion chamber turbulence, resulting in increased flame travel, fuel efficiency, and reduced knock. Fits 4 inch bore S&S V-Series engines.

  • Special S&S 4 inch bore bolt pattern
  • Machined for S&S manual or electric compression releases
  • 2.000 inch intake valves and 1.605 inch exhaust valves
  • Special "cast to shape" intake ports with a special directional fin for improved air flow
  • Precision CNC machined from heat treated aircraft quality aluminum castings
  • 2 fully assembled cylinder heads with S&S .640 inch lift springs
  • Threaded plugs to seal compression release holes
  • 84cc or 92cc
  • Choose finish

 

Assembled S&S® Super Stock® Head Kits for 4" V-SeriesEngines
Description 
Finish 
Natural   Black   Polished  
84cc   90-1015   90-1515   90-1071  
92cc   90-1009   90-1509   90-1070  
Special Order*   106-5695 
*Call for pricing. Use the Special Order part number to order front or rear replacement cylinder head assemblies. Replacement heads are only available assembled, complete with valves and springs.  



    • Due to expanded stud pattern, these heads will not fit on stock Evolution® engines
    • 84cc heads are stock on 100" engines
    • 92cc heads are stock on 107" and 113" engines



EXTRA PARTS NEEDED
Gasket Kit For S&S® 4" Bore Heads . . . . . . . . . . . . 90-1909

 

There are no customer reviews for this product. However, you can be the first person to add a review for this product.

Add Review
Add Review
Name:
Review:
Rating:
 
 
 
 
 
 

(Your browser will be redirected back to this page)