250-500cc Replacing 4 stroke master brake cylinder for wr300

Hey out there, I wanted to replace my rear master cylinder for a four stroke one(or larger one). The reason is rekluse doesnt plan on making a LHRB to fit the master cylinder for the new two stroke one.(I called themknow it doesnt fit by finding out the hard way). So I was gonna start looking on ebay for a replacement that would work so I can have a LHRB. But not sure which ones would fit for which bike /year range. Ideas on what to look for?

Starting in 08 (except WR250/300 and TE610/630) all the MCs are the ones you are looking for. Keep in mind that the mounting bolt spacing is a little closer on the later cylinders.

Yes, the new style is a 40mm spacing and the old one is 50mm. But, the master is just a standard Brembo and it the same one that KTM uses. The last one I used was from a KTM 150sx that I got off ebay and I made my own push rod.

There are several ways to when it comes to mouting, but a piece of aluminum flat stock makes for the easiest way.

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