Chain guide issue w/larger rear sprocket?

[Deverix]

Sorry if this was already asked and answered - couldn't find it.

I am about to replace the 48T rear sprocket on my 05 CRF 150 with a 50T. I know a few of you guys have put 50s on the rear...

It looks like the chain clearance up and into the chain guide from the 48T sprocket is pretty tight - am I going to have any problem (clearance, etc.) with the stock chain guide when I put on this larger rear sprocket?????

[CRF150Joe]

im curious about that too im getting a 50T rear sprocket for mine too i think it will clear but lets see what other people have to say

[Deverix]

Does't anyone have info on this? I'm assuming it is OK because other posts on this did not mention changing the chain guide, but anyone who has put a 50 on would know.... anyone???

[coeshow]

There should be no problem. The CRF230 uses a 50 tooth rear and the same chain guide. It should be fine.

[bob333]

but the swingarm is different

[coeshow]

The swingarm is different only in that it is shorter on the 150. The placement of the guide mount in relation to the hub is equal on both machines.

[Deverix]

I put on the 50T sprocket today and went on a short test run. Everything seems fine. Thanks guys. The 50T does seem to provide more spirited acceleration.

BTW, it's a Renthal 7076 T6 aluminum sprocket and R1 Works gold chain. Oh man, it's a beautiful setup. This sprocket is half the weight of the stock sprocket, maybe less (didn't weigh 'em, but it is a dramatic difference.) And yes I know the O-ring chains last longer; don't really care about that. This is a lighter, bullet-proof racing chain and I love it.