Does a 51 tooth fit with stock chain?

16 replies to this topic
  • rickburlington

Posted September 21, 2010 - 03:42 AM


Hello to All,

I did a search, found all kinds of info on what people like and dislike, but I could not find a yes or no answer with regards to...will a 51 tooth rear fit, ( 13 on the front) with the stock number of links, ( 113 + the master link ) ? ,

The would assume gets us all in trouble, but I assume the 50 tooth with 13 will fit? ( re 113 + M/L) Again, looking for confirmation.

Thanks to All !!!

  • davcon

Posted September 21, 2010 - 04:36 AM


Not sure how many links my chain has but its stock. I'm running a 52 tooth aluminum and the stock countershaft sprocket. The masterlink clip is wearing thin from rubbing on the chain guard but other than that no problems.

  • rickburlington

Posted September 21, 2010 - 04:39 PM


Thanks davcon !!

  • MarkSk

Posted September 23, 2010 - 09:21 PM


On my '10, I swapped out the stock 48t with a 50t and the chain fits fine. Looking at the adjuster, it *looks* like there is enough adjustement room left to go up to a 51t but can only personally vouch for the 50t.

Oh, keeping the front tire on the ground is now even more difficult but I use 3rd gear way more.


  • Beatcoaster

Posted September 27, 2010 - 08:48 PM


I got the GYTR 51t and had to get a new chain as the stocker didn't fit. I got a RK EXW Gold chain to go along with it and haven't even needed to adjust it yet after 3 rides - just goes to show how weak the stock chain really was...

  • rickburlington

Posted September 28, 2010 - 03:39 AM


Thank Gents !!

I pick up the 51 tomorrow, hope to put it on over the weekend. I'll post from there so we all are informed.

Thanks again

  • rickburlington

Posted October 30, 2010 - 11:28 AM


The 51 tooth sprocket fit my 113 link chain plus the master link. I have a 50 tooth rear coming in,but that will not get installed until next year.

Thanks again to all.

  • stealman

Posted October 30, 2010 - 06:29 PM


Thats interresting. On my 08 with the stock chain length, 114 links, a 51 wont fit. A 50 fits. What year bike do you have?

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  • mdkcrf250r

Posted October 30, 2010 - 09:14 PM


On my 08 I went with a 50 and it barely fit I have the axle run as far forward as possible. I'm not positive if its the stock chain but I believe it is.


Posted October 31, 2010 - 06:20 PM


is putting another link and another master on a chain a bad idea, in order to avoid buying a longer chain? I would think you guys would have issues when running a paddle tire, having it hit the swingarm with the axle all the way forward. I run a 13/51 on my yz250, and had issues with the paddle. Did that double master link as a quick fix on a cr450x i was riding at the dunes a couple years ago, was wondering if its something I should avoid in the future.

  • stealman

Posted October 31, 2010 - 08:52 PM


I would like to know about the double master link as well? It seems like it should be fine.

  • DBMX 925

Posted November 01, 2010 - 01:35 AM


2 master links, not recommended, but doable.

  • tech24

Posted November 01, 2010 - 05:39 AM


Not saying a 114 wont fit but why not just get 116 and be done with it. I wouldn't double up on master link either these machines but down some HP and added weakness isn't a good idea but in a pinch I guess it can be done.

  • rickburlington

Posted November 03, 2010 - 01:27 AM



YZ in question is a 2007. I used grayracers (patent pending) piece of wood which gives you the proper slack in the chain. There is maybe 1/4" more room for the axle to move forward.

  • dubee

Posted November 03, 2010 - 08:29 AM


I got mine with a 13font and 53back, but its so close fit that it is kinda tough to get back wheele of somtimes lol now i got a 14 in front with 53 back but i think im gonna get a 50 back soon.

  • stealman

Posted November 03, 2010 - 10:10 AM



YZ in question is a 2007. I used grayracers (patent pending) piece of wood which gives you the proper slack in the chain. There is maybe 1/4" more room for the axle to move forward.

Now that I think about it my bike has Ziptie wheel adjusters on it and that might be the reason the 114 link chain will not work with the 13/51 gearing.


Posted November 04, 2010 - 04:54 AM


deal on sprockets, dunno how god they are, but i might pick up a replacement as mine is wearing down, just can't decide if i want to try a smaller sprocket, as my gearing is too low in some situations.

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