1952-56 K Model & 1957-72 Sportster Weld On Hardtail - The distance between the inside to inside of the axle plate is 9-5/16"
1973-78 Sportster Weld On Hardtail - The distance between the inside to inside of the axle plates is 9-5/16"
1979-81 Sportster Weld On Hardtail - The adjuster blocks are on the outside of the rear axle plate and are threaded to accept the axle adjuster kit. This hardtail accepts 3/4" axle. Top seat plate is included. Uses 2000-up caliper. The axle's width ranges from 11-1/4" - 11-3/4"
1982-2003 Sportster Weld On Hardtail - Weld on hardtail with bracket is for stock frames with disc brake. Constructed of 1-1/4" tubing which compliments the original tubing of the stock XL frames. This hardtail accepts a 14-1/2" long axle with a 3/4" outer diameter and stock rear wheel. The axle plate is welded onto the frame.