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 1968-70
Fits: 1967-70
Polished 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 1968-70
Fits: 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 Sportster
Cast sprocket cover features early rib design. Cover includes worms and hardware.