HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
Dutch

650R Rear Sprockets - WoW! Does this bike eat them

13 posts in this topic

I put a Vortex 50T rear sproket on last summer and the BRP chewed it up in about 2 months. Any suggestions out there? I'm running dual sport, fire roads and woods here - what works in the desert? (wish I was there now)

Share this post


Link to post
Share on other sites

You might consider a stainless steel rear sprocket. Had one on my WR400 and will be putting one on my Berg as soon as the old one is worn enough to spend the money.

Share this post


Link to post
Share on other sites

The Vortex 's look real nice being that their CNC machined from 7075 aluminum, but you're not the only person I've heard of whose worn out an aluminum sprocket quickly. If you want good sprocket life, then switch to a stainless steel sprocket as WR400Rock mentioned. Here's some info to read...

http://www.off-road.com/rick/sidewinder/sproc.html

Share this post


Link to post
Share on other sites

On the big 4-strokes you really need a stainless or ti-molly sprocket. My CRF burned a renthal in 10 hours and my 650r stock sprocket was like butter.

Share this post


Link to post
Share on other sites

That's weird, I have never had to replace my chain/sprockets on my 00 (bought in 12/00) xr650. In fact I always bragg that I have only had to adjust the chain once, after break-in. I take it to Baja, Glamis, Octollio, and Lake Morena. I have chewed up a few rear tires though. Maybe your chain adjustment is off or the street riding is hard on it, I remember my xr 600 dual sport went through about 3 sprockets in the 3 yrs that I owned it. Maybe you are just a power junkie (like most big bore riders) and you are on the throttle hard. Hope you find a sprocket that works.

Share this post


Link to post
Share on other sites

I've had good luck in the past with aluminum sprockets - those bikes didn't have the girth of my "Betty". The stock sprocket seemed to wear well but the gearing was wrong. My feeling is that Vortex sprockets are made to be used on XR50's. There will be a steel sprocket on her next year I think. Any recommendations?

Share this post


Link to post
Share on other sites

I think cast iron is the answer. Not only does it wear well, it also gives the 650R the extra flywheel effect it deperately needs. :)

Share this post


Link to post
Share on other sites

Get the titax SS rear and a DID VM Gold X-ring from Rocky Mountain. I think I paid $57 for the sprocket and $69 for the chain. One whole summer of riding and no visible wear at all. Much less expensive than those sidewinders which are vastly overrated.

Share this post


Link to post
Share on other sites

...Much less expensive than those sidewinders which are vastly overrated.

I agree 100% and would buy something less expensive than the Sidewinder such as Moose, Titax from Rocky Mountain, etc.

Also make sure your chain is in good shape before you install a new rear sprocket since new sprockets are cut to fit new chains. If your chain is worn (change in length and pitch), it will lead to premature wear on a new sprocket.

Share this post


Link to post
Share on other sites

This may sound stupid, but you guys are installing a new chain as well as new sprockets, right?

You can buy all the carbon fiber/titanium/platinum/uranium/playdough sprockets you like but they'll still wear excessively unless the chain is also new.

I replace the main & counter sprockets along with a new chain and haven't noticed excessive wear.

With that said, BD recommends the DID x-chain:

http://www.bajadesigns.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=BD-Bike-Store&Product_Code=150122

Of course they want $99 for it and it will probably get sent to the wrong address. Sounds like Danco has found the best deal.

Share this post


Link to post
Share on other sites

Dutch,

Check out these rear sprockets in addition to stainless steel Moose, Titax, etc. I've never heard of Ironman Sprockets until today, but they appear to have a tough product. They make all kinds of sizes for the XR650R and they come with a 12 month guarantee! :)

http://www.ironmansprockets.com/

Share this post


Link to post
Share on other sites

Thank you qadsan - I like that design, they also come in a wide range of sizes. I'm running 13-50 now and it works well for me,(rev limiter at 94mph).

Share this post


Link to post
Share on other sites

Cheap steel sprockets and a 520 RK -SO are the only way to go. I use this combo on all bikes and my budy with a CR500 has had great success too. I am talking 3 years of trail riding / racing. Dennis Kirk steel spockets rule!!!! RK-SO chains blow any priced DID away.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0