Drag Specialties 09310017BLK - Drag Specialties Replacement Cylinder for Evolution Motors For Harley D

Features: Replacement cylinders feature ductile cast-iron sleeves in aluminum castings. Sleeve has external ribs that “lock” the sleeve to the aluminum casting so it cannot move. Excellent for stock replacement. Cylinders are finished slightly undersized so they may be finish-honed to fit your pistons.