# Need 4 stroke help...yz426/yz450f **URL:** \ **Category:** Shift518 Automotive\ **Created:** [January 9, 2011, 6:57pm UTC](https://forums.speedlife.net/t/need-4-stroke-help-yz426-yz450f/256348 "2011-01-09T18:57:23Z")\ **Posts on this page:** 1\ **Showing post:** 3
**Author:** ![SSmokinn\_SS](https://avatars.discourse-cdn.com/v4/letter/s/ec9cab/32.png) [@SSmokinn\_SS](https://forums.speedlife.net/u/SSmokinn_SS)\ **Post date:** [January 9, 2011, 7:17pm UTC](https://forums.speedlife.net/t/need-4-stroke-help-yz426-yz450f/256348/3 "2011-01-09T19:17:33Z")
> [@Hello From Clearwater](https://forums.speedlife.net/t/hello-from-clearwater/38599/22): > > i know on mine the trans was all diff as i sheared my forks once . and it was a 01 426 . the only changes i made was using a 450 exh cam on it . if i remeber right most of the diff was in the case where the shafts set it and so on I know that the 01 transmissions had problems, and were weaker then the 02’s. I am just wondering if they use the same exact shift forks. I only need the 5th gear shift fork, as my 1-4 shift flawless. I made a post on exriders. I am really curious on switching to a 4 speed. --- _[View the full topic](https://forums.speedlife.net/t/need-4-stroke-help-yz426-yz450f/256348)._