These HardTail frames are developed for the 1986 thru 2003 and for the 2004 to present Evolution Sportster engine. Like all Kraft/Tech frames, they are made from seamless thick-wall tubing. Features 1 1/4" tubing with a 1 1/2" diameter backbone. Takes Softail-style winged oil tank (ZPN751464). Available with 30 degrees rake for use with 130 wide rear tire in conjunction with a 1 1/8" belt, 30 degrees rake and 2" stretch in the down tubes for use with a 180 wide rear tire and 1 1/8" wide belt or 34 degrees rake and 2" or 3" stretch in the down tubes for use with a 180 wide rear tire and 1 1/8" wide belt. Wide frames will accept a 200 wide rear tire when final drive is converted to chain drive. All frames feature TIG/MIG welds, solid steel CNC machined neck and CNC machined billet steel axle carriers. Oil tank brackets, fender mounts and voltage regulator mount are welded in the correct place. Frames come complete with 3/4" rear wheel axle and are designed to use a 1/2" offset transmission sprocket for proper balance. Like most Kraft/Tech frames, the HardTail frames for Sportster engines are approved and can be used with up-to 150 HP engines.