shwagy357 4 Posted April 19, 2020 I am looking to replace the master cylinder on my Honda 300. The OEM master cylinder is over $150, do you all see any reason why I could not use a master cylinder off of a TRX420 Rancher, these seem to be approximately half the cost? Share this post Link to post Share on other sites
Fishfiles 20,140 Posted April 19, 2020 No problem shwagy , I have TRX250 Fourtrax and ATC250 ES master cylinders on my 300s , I like them because I had a bunch for free and they have a bigger reseviour ---- my 450 is running a Yamaha Grizzy master -----seems most masters have that same size Banjo fitting and handle bar diameter ----the reverse lockout might not be the same on a 420 3 Share this post Link to post Share on other sites
jeepwm69 7,413 Posted April 20, 2020 Nope, you can use a 420, 500, or any number of other master cylinders. I got a used one from a 500 parts bike I had, and used the microswitches built into it to wire up a start-in-gear feature when the brake lever is held back (like the newer machines) and added brake lights to my daughter's 97 300 2 Share this post Link to post Share on other sites
TRX Student 151 Posted May 1, 2020 I just swapped a Yamaha big bear 350 master cylinder onto my 300 fourtrax. Easy. 1 Share this post Link to post Share on other sites
