After many moons of not riding and not having a dirt bike, I have recently gotten back into the game again with a used 2011 WR250. The original owner said that the chain and sprockets are the original ones and as I look more closely I can see the chain is Regina oring and the rear sprocket does have a Husqvarna logo on it. A long time ago I used to assess wear by how much I could pull the chain away from the rear sprocket. If I could see 1/2 or more of the tooth, it was time to replace. How do people judge this wear now? What chain / sprocket combo do folks recommend? I would much prefer long wear over any weight savings here...
Your method is tried and true, stick with it. Personally I prefer steel rear sprockets based on price and (perceived) durability.
Thanks, here is what I see on my bike. Thoughts on replacing with another Regina chain and JT steel sprockets?
Mbcoulter, given the wear of the sprocket and chain sideplates id be replacing them. I use jt sprockets and DID X-ring chains. No proof they're better than others, just cos they're known brands (I don't have the desire, discipline or budget to back to back testing). I believe any recognised brand, sealed chain will be fine (eg. DID, Regina, Renthal, Tsubaki). Maybe someone here can advise on ratios that may better suit your bike and riding.
Personally I'd run 'em a few more rides yet. Normally by the time the rear sprocket is toast it's time for new everything. Normally get 3 front sprockets to a rear. JT, Sunstar, RHK ultralite(which I'm currently running) all seem decent steel sprockets. Even got coupla Chinese brand 52T to try next. Longest lasting sprocket I bought from MXpartsNZ. Cheap & lasted years! I use chinga oring chains which are slightly heavier & wider but do the job fine!
Leave them all . They will all wear evenly . Replace them as a set in ages . Only worry about them if you are planning on changing sprockets for ratio reasons etc . Like I'm less you have a 2000km trip planned there's no harm Replace them all when the rollers start rattling on the pins
Well, maybe I will ride them for the rest of this year and replace over the winter. And yes, my plan is to replace both sprockets and chain at the same time :-)
Found a great deal and placed the order for steel JT sprockets and a Regina X-Ring Gold Enduro chain. These were about $120 shipped... Black steel sprocket and gold chain... Sounds kind of blingly
Went similar on the WR250 with black JT sprocket and gold RHK x chain. Probably 50 hours and still going good, especially the cogs.
