1000cc piston set +.020" for Harley-Davidson Sportster 1972-1985
$295.76
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- Keith Black dome piston set is .020" oversize with a 8.2:1 compression ratio for 1972-1985 Sportster Ironhead XL 1000cc models
- The Keith Black 390 hypereutectic alloy is cast in a permanent steel mold which makes it possible to build a light weight piston that makes more power and uses less fuel and lasts longer
- The low heat transfer of the alloy keeps the skirts cool so piston expansion is minimal
- The combination of a low heat transfer piston alloy and high compression ring placement increases power and economy
- The high ring placement alone reduces detonation and increases the top ring temperature
- Made in USA