Keith Black 390 hypereutectic dish piston set is .020 over size with a 9.0:1 compression.
Piston have 3-1/2 and is alloy cast in a permanent steel mold which makes it possible to build a light weight piston that makes more power runs quietly uses less fuel and lasts longer than any other type of piston. The low heat transfer of the alloy keeps the skirts cool so piston expansion is minimal. Piston set includes Hasting Moly ring set. Use with a 3.812 stroke and a dish head. 2009-UP XL 883 cylinders cannot be overboard to 1200cc. 2009-UP applications will require separate purchas e of 1200cc cylinders to be used with piston kit. **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.
Fits:
XL 1986-2022
UOM: SET
Country Of Origin: USA
Accessory Items:
16-0622 – Ring-O-Matic Ring Compressor Tool Kit
16-0029 – Connecting Rod Clamping Tool
60-0167 – Cylinder Boring Service
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