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633
CLASSIC
V-Twin Replica Straight Leg Frame
Replica Straight Leg Rigid Frame with cross tube is for 
chain drive models. This frame is an authentic reproduction 
of the 1955-1957 straight leg frame with a stock 30° neck 
rake. Details include forged parts as original neck, front and 
rear engine mount, side car mounts, top seat yoke, axle, seat 
post and footboard tabs. Front engine mount spacer will allow 
installation of a Knucklehead or Flathead engine. The frame 
has an indent on the left lower rear frame bar from tooling fix-
ture. A Bill of Sale is supplied. Frame will accept Panhead and 
Shovelhead motors. 
Note: Cross shaft, seat post, transmission 
plate and rear axle assembly included.
Replica Authentic
51-1956  51-1955
51-1956
51-1956
V-Twin Mfg. is the sole 
maker of Rigid Frames 
which utilize “Forged” 
components!
Since 1995...
Over 10,000 Served!
Tire  Style 
  
Type
200 Straight
 
51-1957 
Disc
200 
Rigid Wishbone
 
51-1948 Disc
140 Straight
 
51-0096 Mechanical
140 Wishbone
 
51-0097 Mechanical
Related Components
VT No. 
Item 
Note
17-0945 
Engine Sprocket Nut Kit
19-0399 
Transmission Sprocket Only 
22T
19-0447 
Transmission Sprocket Kit 
23T
19-0448 
Transmission Sprocket Kit 
24T
Frame will accept:
• Flatside tanks
• Softail oil tank
• 230 rear tire with chain
• 200 rear tire with belt
• +2” raised neck
• Stock rake, 30°
• Order related parts separately.
 31-0859 oil tank bracket
• 44-1942 axle
• 51-0625 TC-88/Evolution rear 
engine mount adapter
• 44-1946 axle collars
Retro Rigid
51-1957
Replica Retro Rigid Frame features original style 
construction including forged parts in neck, side car 
mounts and rear axle areas. Order rear mount for 
TC-88 models separately. This retro rigid frame can 
be fitted with a Panhead or Shovelhead engine with 
a 4-Speed transmission. A tin inner primary 42-0617 
must be utilized for this application. Use of a ¹⁄₂” offset 
transmission mount plate and ¹⁄₂” offset motor sprocket 
with splines will offer clearance to use a 200 or 140 
rear tire with a chain rear drive. Additional clearance 
can be achieved with the addition of a ¹⁄₄” offset trans-
mission sprocket.
*Note: For Evolution/TC/Shovelhead/Panhead engines.
51-1948
51-1957
51-1948
200
51-0096