17-4500 - 45 4-Speed Transmission Assembly

This 4-speed transmission comes completely assembled with all gears shaft and covers installed for a quick straight- forward installation. It accepts original primary drive with clutch and the chain sprocket with cover. Looks the same as a 3-speed unit the only extra part required is a 4 speed shifter gate. The original 3 speed transmission is the large gear ratio difference between 1st and 2nd i.e. from 2.47 to 1.57:1 with a consequent big rpm drop. The 4 speed version with its extra gear allows you to stay in the power band much better for performance. Includes a parkerized sprocket cover with arm black solo kick start arm black pedal assembly clutch hub without rollers and a 17 tooth countershaft sprocket. The shift pattern is as follows: 1st gear is back towards driver neutral 3rd and 4th gear are foward. Shift pattern uses 4-speed gate and rod with clevis. Shift lever all the way to the rear ball detent in first gear pocket for lever position during assembly. Order clutch pack separately. *NOTE: Lever all the way towards the rear is first gear! *NOTE: The 4-speed tank shift gate is available separately for the early cateye tanks or the late tanks of 1948-1973. *NOTE: Late shifter pattern Technically the Servi-car would only work from 1947-63 because the first electric starter was created in 1964 but it will fit as a kick starter only.