

Replica "HM" Straight Leg Rigid Frame
You will also need another part
- In some instances it may be necessary to ream or file holes slightly in order to assemble parts onto the frame.
- Use #31-0475 Front Engine Mount Spacer to accept 1936-1947 Kucklehead or Flathead engines in 1948 - up frames.
- Features #31-0528 Replica Tool Box Mounting Bracket.
- *NOTE: Replica "HM" is our updated version with forging hallmarks on many of the components.
- *NOTE: Features the following forged parts with HallMark numbers and marks: seat yoke, front motor mount, side car loops, rear axle plates and transmission front/rear mounts.
- Required Required to use with #24-0121 Zinc Fork Neck Cup Set with Races.
Description
Replica "HM" straight leg rigid frame is an authentic reproduction of the 1954-1957 straight leg frame with stock 30ยฐ neck rake. Features cross tube to accept mechanical rear brake assembly with a star hub wheel with chain drive. Forged parts include: neck, front and rear engine mount, side car mounts, top seat yoke, and footboard tabs. This mechanical frame will accept a neck lock. Front engine mount spacer will allow installation of a Knucklehead or Flathead engine. Frame will accept all Panhead and Shovelhead engines.
*NOTE: Cross shaft, seat post, transmission plate and rear axle assembly are included.
*NOTE: Must order tapered bearing neck cups separately.
*NOTE: This "HM" type has forgings with original markings. V-Twin MFG supplys a Bill of Sale only referencing the part number.
*NOTE: V-Twin replica frame now has forged parts with hallmark numbers and marks in these positions: seat yoke, side car loops, rear axle plates and transmission front and rear motor mounts.
Specifications
- V-Twin number
- 51-1955
- Manufacturer
- V-Twin
- Sold as
- 1 - EA
- Origin
- Imported
- 2026 catalogue pages
- 647
Goes with this part
V-Twin lists these alongside 51-1955 — replacements, the parts commonly fitted at the same time, and supersessions. Check the fitment on each before ordering.