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The V-Twin 51-0781 Replica Hardtail Rear Frame Section is a full replica construction designed for installation on 1948–1957 Harley-Davidson FL models. The section includes forged rear axle plates, an oil tank mount, lower rear fender mount, center tube, engine and transmission mount, transmission mount strap, weldment, tool box mount and top seat post forging. The seat post yoke is included in the weldment and allows the post to be retained with a rigid seat post bushing.
This rear frame section accepts a stock-width 500 x 16 tire, mechanical juice brakes, a replica rear stand and a stock rear fender. Mechanical juice brakes require welding an additional tab onto the left axle plate. The tail accepts a seat post, mechanical brake cross shaft and brake drum assembly. Sidecar loops are available separately. The top tank tube is not included, and the section is intended for professional welding installation.
The V-Twin 51-0781 is designed for 4-speed, chain-drive applications. Lower tubes measure 1/8 inch in outer diameter for a smoother transition to existing tubes or a 1958–1984 FL swing arm frame, while the top tubes measure 1 inch as on original replica frames. Axle plate spacing is 95 mm.
Features:
- Replica Construction: Full replica rear frame section with forged and welded components.
- Included Frame Components: Forged rear axle plates, oil tank mount, lower rear fender mount, center tube, engine and transmission mount, transmission mount strap, weldment, tool box mount and top seat post forging.
- Seat Post Support: Weldment includes a seat post yoke for use with a rigid seat post bushing.
- Tire Compatibility: Accepts a stock-width 500 x 16 tire.
- Brake Configuration: Accepts mechanical juice brakes; an additional tab must be welded to the left axle plate.
- Frame Details: Plates accept a replica rear stand and stock rear fender.
- Tail Assembly: Accepts a seat post, mechanical brake cross shaft and brake drum assembly.
- Application: Designed for 4-speed, chain-drive use.
- Installation: Intended to be installed by a professional welder.
- Tube Specifications: Lower tubes are 1/8 inch in outer diameter and top tubes are 1 inch.
- Axle Plate Spacing: 95 mm.
- Fitment: Fits 1948–1957 Harley-Davidson FL models.
Fitment:
Harley Davidson FL 1948
Harley Davidson FL 1949
Harley Davidson FL 1950
Harley Davidson FL 1951
Harley Davidson FL 1952
Harley Davidson FL 1953
Harley Davidson FL 1954
Harley Davidson FL 1955
Harley Davidson FL 1956
Harley Davidson FL 1957
Harley Davidson FL 1958
Harley Davidson FL 1959
Harley Davidson FL 1960
Harley Davidson FL 1961
Harley Davidson FL 1962
Harley Davidson FL 1963
Harley Davidson FL 1964
Harley Davidson FL 1965
Harley Davidson FL 1966
Harley Davidson FL 1967
Harley Davidson FL 1968
Harley Davidson FL 1969
Harley Davidson FL 1970
Harley Davidson FL 1971
Harley Davidson FL 1972
Harley Davidson FL 1973
Harley Davidson FL 1974
Harley Davidson FL 1975
Harley Davidson FL 1976
Harley Davidson FL 1977
Harley Davidson FL 1978
Harley Davidson FL 1979
Harley Davidson FL 1980
Harley Davidson FL 1981
Harley Davidson FL 1982
Harley Davidson FL 1983
Harley Davidson FL 1984
| UOM: EA |
| Country Of Origin: TAIWAN |
| Accessory Items: 51-0457 - Replica Frame Hardtail 51-0823 - Rigid Hardtail Rear Frame Section 51-0920 - Weld-On Frame Hardtail 51-0466 - Big Twin Hardtail Frame |
| Tech Notes: Lower tubes are 1/8inch outer diameter for a smoother transition to the existing tubes or 1958-1984 FL swing arm frame. Top tubes are 1inch as Original Replica frames For chain drive only |
| Measurement: Axle Plate Spacing: 95mm |
