{"product_id":"straight-leg-rigid-frame","title":"Straight Leg Rigid Frame","description":"\u003cp\u003eRetro rigid frame straight leg original style is updated to accept flat side gas\/oil tanks. Original forged parts include: neck  side car mounts and rear axle area. For all Big Twin engines with 4″ 5 or 6 speed transmission.\n\u003cbr\u003eShovelhead  Evolution and TC-88 engines require a tin inner primary. Accepts Knuckle or Flathead engine with mount spacer. Use with disc brake and 87-UP style rear caliper  1986-1989 Softail gas tank  rear tire 230 w\/ chain or 200 w\/ belt or chain drive and a 3\/4 inch rigid rear axle.  Will not accept a stock seat post. Neck is 2 inch extended over stock  with 30 rake. **NOTE: Seat post and cross shaft bushings may require further reaming for proper fit. The frame is taller in the engine compartment to house the Evolution and TC-88 thru 110 motors. Rigid mount 5 and 6 speed transmission with the aluminum inner and outer primarys  check height of transmission plate for correct primary alignment. In some instances it may be necessary to ream or file holes slightly in order to assemble parts onto the frame. Assembled with detailed casting at all poimts  tool box mount included. Casting are not  inchHallmark inch type. Raw steel transmission mount plate and axle noy included. \n\u003cbr\u003e Tech Notes: When using a chain drive with a 230 tire  the use of #17-085 9  a 1inch offset plate and a #19-0105 sprocket is required. When using a belt or chain drive with a 200 tire  the use of #17-0860  a 3\/4inch offset plate and a #19-0104 sprocket is required. When using a Shovelhead  Evolution  or Twin Cam engine  it is required to use a #42-0617 tin inner primary. When using with a TC-88 engine order #51-0625 rear frame mount adapter plate Use #31-0475 Front Engine Mount Spacer to accept 1936-1947 Knucklehead or Flathead engines in 1948-up frames. When using the #42-0617 tin inner primary  the use of #19-05 70 is needed if using a #17-0859 transmission plate 1inch offse t and a #19-0105 sprocket. When using the #42-0617 tin inner primary  the use of #19-05 69 is needed if using a #17-0860 transmission plate 3\/4inch offset and a #19-0104 sprocket. Suggested to use with #44-1942 axle. Accepts 140-200 rear tires.\u003c\/p\u003e","brand":"V-Twin","offers":[{"title":"Default Title","offer_id":67610425983161,"sku":"51-1957","price":2697.99,"currency_code":"USD","in_stock":false}],"url":"https:\/\/www.thespeedshopusa.com\/products\/straight-leg-rigid-frame","provider":"THE SPEED SHOP USA","version":"1.0","type":"link"}