Part Number: 11-2203

Application: 1941-1977 FL
1971-1977 FX


Details:
Keith Black 390 hypereutectic piston set is .020 oversize and is for 3.438 bore. Pistons have a compression of 9.0:1. **Note:Run engine at moderate speeds for at least 500 miles avoiding excessive running in lower gears in order to properly break-in new pistons and rings.

UOM: SET

Country of Origin: MEXICO