OEM front sprocket for '04 WR450

6 replies to this topic
  • KiltLifter

Posted May 08, 2005 - 08:45 PM


I was thinking about dropping one tooth up front and was wondering how important the little rubber stuff on the OEM sprocket is :) ?

None of the aftermarket stuff has it, but I doubt Yamaha would spend the cash on it if it was worthless.

Is it just quieter or is there another benefit?

  • KiltLifter

Posted May 09, 2005 - 08:47 AM


OK, no replies. Well then, does anyone have heartburn over running a 13T sprocket? Worse wear? Hard on anything?


  • ncmountainman

Posted May 09, 2005 - 08:51 AM


its a little harder on the chain and slider,the plastic must have been an attempt at quieting the chain noise,i've never seen it on anything aftermarket.

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  • BajaFool

Posted May 09, 2005 - 09:26 AM


I ride some VERY tight, steep single track in Mexico, while on the same day I will ride wide open graded dirt roads. I found that going two teeth bigger on the rear sprocket was a better option than one tooth smaller on the front sprocket. I changed my rear sprocket after the first 100 miles on the bike. A smaller front sprocket is hard on the chain (too much of a bend). One tooth smaller on the front equals four teeth bigger on the rear sprocket and is really overkill in my opinion. I went with a Yamaha rear sprocket, after I was surprised to learn that the price for OEM was the same or cheaper than after market (there is a "good guy" discount figured in this equation"). I washed my bike last night after a hard weekend ride in Mexico. I checked out my chain after I cleaned and lubed it. After 3,000 miles of riding the original chain and sprockets, there is no visible hooking on the OEM sprockets, which I think is impressive. When or if my chain and sprockets wear out, I definitely will replace them with the same brand of chain and OEM sprockets. Just my opinion. :)

  • wr450oregon

Posted May 09, 2005 - 09:35 AM


Was wondering about the rubber ring myself! I went to a 13t a couple of months ago and will never go back. It helps slow down how often the bike will stall in real technical stuff and i love having my arms ripped off. Will be awhile before I know about extra wear but it won't matter because it's more than worth it unless your in the dunes or can run WFO in 5th all the time. I'm 1st & 2nd 80% of the time 5th 5% so it works for me.

03 wr450
all mods
starter upgrade
screaming fast

  • UltraHyper

Posted May 10, 2005 - 03:33 AM


When I bought my bike there was a 13/50 ,found there was'nt quite enough top end,went back stock 14/50 , 1st gear a bit high now, so i think im going to go with 14/52

  • RichBaker

Posted May 10, 2005 - 03:49 PM


The rubber is for noise reduction. I put a 15t on my 03, the Yam part was several bucks cheaper than ANY of the aftermarket ones.


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