How To: Wide Ratio Transmission Install | Yamaha YZ250
When Yamaha came out with the YZ250X, they gave us a great off-road bike built from their award winning motocross bike, but with a wide ratio transmission. Because the bikes are so similar, it is simple to convert the YZ250’s transmission to the wide ratio transmission from the YZ250X with this kit. Now you can give your YZ250 a better, wide-ratio gearing for off-road. Top speed increase of 14%!
This wide ratio transmission kit has all the OE Yamaha parts to convert your YZ250 transmission to the wide ratio transmission from the YZ250X. This kit comes with new gears, circlips, and collar to make 3rd, 4th and 5th gears taller (higher speed). The new YZ250X has the same 1st and 2nd gear as the regular YZ250, but the 3rd, 4th and 5th gears are taller on the X model giving you an advantage out in the desert or on higher speed courses.
Wide-Ratio transmission for Yamaha YZ250.
Converts your Stock YZ250 close ratio transmission to a wide ratio transmission.
Contains 3rd, 4th and 5th gears, (4) c-clips and collar.