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PERFORMANCE MOTORCYCLE PARTS AND KITS FOR AMERICAN V-TWINS

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4 3/8" Bore Pistons for 1984–Up Big Twins

 
 
 
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$516.95
 
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This 4 3/8" bore piston series is for cylinder heads designed for use with a flat topped piston in S&S® engines for 1984–up big twins.

 

92-4990 Series Pistons Specs
Type   Bore   Material   Dome   Deck Height   Stroke   Wristpin Diameter  
Forged   4 3⁄8"   Low Silicon   Flat   1.200"   All   .927"  


 

 

Standard. . . .92-4990
+.010". . . .92-4991A
+.020". . . .92-4922A

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