SUPERIOR MILLENNIUM CYLINDER 05K21117 COMPLETE ASSY

Exhaust and intake ports are volumetrically matched to maximum output and performance.

Increased port wall thickness – eliminates problems with warping and cracking.

Computer-generated head fin configuration – deliver more uniform heat transfer and fewer “hot” spots.

Manufactured from the most advanced alloys available – exceed industry standard for strength and porosity.

Note: Item does not include piston pin or rocker arms.