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wr gear swap

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i know im beating a dead horse but i couldnt fing a clean answer, has anyone just taken the main axle and countershaft from a wr and placed them into there yz? can i be done? i found a wr with a melted head for CHEAP!! just wondering if it would work.. thanks

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there is a mountain of info on the wr swap here.

The wr first gear will not fit without some case grinding.

you can do 3-4-5 as a drop in but for 1-2 it is a little more complicated.

There is a good post here with pics, part #'s and everything else you could need.

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ya i know about the case having to be ground and i have seen a lot of really good info i was just wondering if i could put the whole wr assembly in my gear box... so instead of pulling gears off the shafts just put the wr shafts and gears in my yz geabox... thanks

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You are aware that these gearsets are not WR250 gearsets, you did not mention that and as far as I personally know only the WR400 & WR426 work as having done that before. I have seen mentioned here that someone put in WR450 gears but I have not experienced that.

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