I cannot believe that honda would install that narrow little sprocket with all that slop on the front countershaft........in 11,800 miles I had significant wear on the splines, in twice that distance running the stock style sprocket I would have had SERIOUS damage, and most likey would have had to replace the countershaft, which is a huge job labor and expense wise. This set-up is beyond ridiculous, and I'll be calling Honda tomorrow to give them my feedback
For those that don't know the stock front sprocket on the XR650L is a narrow thin sprocket that fits very loosely on the front countershaft, using only a small part of the available splines, and over very little time the front sprocket can chew up and destroy the front countershaft splines. The XR650R front sprocket is 3 times as wide as the stock 650L sprocket, and fits completely over the whole shaft, using ALL the splines and fitting perfectly tight like a normal front sprocket should And it uses the exact same size chain, so its a complete bolt on affair.
The moose sprocket is the one you need to get, just like spud said. I had to grease the splines, then mark the shaft and bolt holes in the sprocket to make sure and keep the same fit if I removed the sprocket, then I tapped the sprocket on lightly with a socket and rubber mallet, wiggled it back off some, tapped it on again, wiggled it off some, and repeated that till I could get the clip to fit and bolt up. it didn't take long at all, the sprocket will come off no prob, and the clip holds the sprocket in tight as a rock, just like it should have been from the factory
You do have to be very careful and line the sprocket clip up perfectly, theres no room for error with the bolt holes, but with a little patience and finesse its not a problem. That was the only difficult part of the install actually. And be sure and get the bolts tight with some blue or red locktite and you're good to go
I caught this in time and this will be a permanent, long lasting fix for this problem as long as you always use Moose XR650R (any year) front sprockets. Now the front sprocket set-up will last as long as the rest of the bike, which can be a VERY long time
Edited by Sierra Thumper, 22 August 2012 - 12:30 AM.