Polished sprocket cover is die cast as original. Harley OE Part Num: 34911-91 - Polished Fits: 1991-2003 Sportster Harley OE Part Num: 34932-96 - Chrome Fits: 1991-2003 Sportster Harley OE Part Num: 34871-71 Fits: 1971-1976 XLH Polished sprocket cover can be used on kick & electric start models. Harley OE Part Num: 34871-67B Correct for 1968-70Fits: 1967-70Polished sprocket cover features starter cutout and include release worm adjuster screw, nut, oil deflector, spring, and kicker spring stud. For use on kick starter or electric start models. Harley OE Part Num: 34872-57A Correct for 1968-70Fits: 1952-70 Sportster -Chrome or polished sprocket cover without electric starter cutout includes cover, release worm, adjuster screw, nut, oil deflector, spring and kicker spring stud. For kick start only Harley OE Part Num: 34874-52A Fits: 1952-56 K Model & 1957-67 SportsterCast sprocket cover features early rib design. Cover includes worms and hardware.