KR Style Bolt-On Hardtail for Harley-Davidson Ironhead Sportsters

Inspired by the early Harley-Davidson looped KR style race frames, the KR Style Bolt-On Hardtail from Lowbrow Customs fits stock front frame sections on Sportsters from 1967 to 1978. Harley-Davidson produced the KR factory race bike in 1952, and it dominated the track until production ended in 1968. Until now, KR style looped hardtail frames were unavailable.

The KR Style hardtail accepts the stock rear wheel, axle and brake, and includes axle adjusters. The unique style and simplicity of installation provide a perfect base for that Ironhead Sportster bobber, chopper or race bike build. Each frame is hand-made from 1″ x .125″ wall crew tubing with 5/16″ thick axle plates and designed to bolt right up to your frame with ease. Lowbrow KR hardtails are approximately 4″ stretch over stock wheelbase and 2″ drop (2 inches lower than stock). Made in Cleveland, Ohio, USA. In stock and ship immediately. 324.95, Lowbro Customs or call 1-855-456-9276.

6 Responses to “KR Style Bolt-On Hardtail for Harley-Davidson Ironhead Sportsters”


  1. 1 Seymour Apr 20th, 2018 at 9:58 am

    Opens up a whole world for customizers. Lots of potential with this on. Good price too.

  2. 2 Tom Ryan Apr 20th, 2018 at 9:43 pm

    Because of the size of the axel plates, a customizer can get very creative with a multitude of slot styles, step ins, contours, logo’s etc.

  3. 3 RUB Apr 21st, 2018 at 4:03 am

    my back hurts just looking at this .

  4. 4 RBinTEX Apr 21st, 2018 at 8:57 am

    From a bad suspension to no suspension…. modern backward technology?

  5. 5 Xenu Apr 21st, 2018 at 3:16 pm

    Why? Early Sportsters are becoming valuable in stock form.

  6. 6 Texaspoontangtappa Apr 23rd, 2018 at 10:33 am

    Great! Now the frame can rattle too!

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Cyril Huze