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Discussion Starter #1
I would like to know, what are your favorite brand rear sprockets? I don't remember if I ever changed my rear sprocket or not. I only change what is bad unless there is significant wear on any of the other components. So far with 43000 miles, 2 front sprockets, 3 chains, rear sprocket 1 or 2 but I don't think I ever changed the rear. I may go ahead and change both sprockets this time, my o ring chain is not that old. The chain trick is to get the highest tensile strength you can find in the size that fits your bike. I found a chain that will handle 1000cc and I put that chain on my 600. No chain adjustment many miles later, works great.
 

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I would like to know, what are your favorite brand rear sprockets? I don't remember if I ever changed my rear sprocket or not. I only change what is bad unless there is significant wear on any of the other components. So far with 43000 miles, 2 front sprockets, 3 chains, rear sprocket 1 or 2 but I don't think I ever changed the rear. I may go ahead and change both sprockets this time, my o ring chain is not that old. The chain trick is to get the highest tensile strength you can find in the size that fits your bike. I found a chain that will handle 1000cc and I put that chain on my 600. No chain adjustment many miles later, works great.

First, let me say if you got 43,000 out of a sprocket I am extremely impressed. I'm a little confused as the highlighted portion has me a little confused. You mention your on your 1st or 2nd rear sprocket but then never changed the rear. Either way, 1 or 2 sprockets thats still very impressive. I change mine about every year though I do have a lot of sand, dirt and other misc. debris grinding between my chain and sprockets.


Anyway, I can't really say which one is best but I can tell you which one's I've used. Like UncleRandy I've used a SunStar, OEM, JT Sprocket, and recently I special ordered a 60T from Sprocket Specialist.


If your sprocket looks like this (below), then you are way overdue. :p I had some chain skipping over the teeth on steep downhills. I didn't know this was the problem at first but I learned from experience what it was. Nowadays I'm sensitive to worn sprockets and can tell fairly quickly.

I think this was one of my used SunStar sprockets.


Can't remember the one below which was worn but I think a JT but could be another SunStar
 

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I like steel sprockets. I don't know why because I have never tried anything else. They just seem better than aluminum.

I replaced the front and rear sprocket and chain over 30,000 miles ago. The front sprocket teeth are very worn but are standing straight up and down -- no tsunami effect -- which I understand is caused by a stretched chain. My chain is still within operating limits in terms of stretch. The chain has been taken care of fanatically. Next time I will try an O or X ring chain to see if it lasts as long.

Right now I am tortured with the task of making a decision whether to replace the front sprocket, the front sprocket and chain, or the front and rear sprocket and chain. I hate not maximizing the use I can get out of something. I have new sprockets and chains and gaskets and seals all sitting on the shelf ready to be used.
 

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Right now I am tortured with the task of making a decision whether to replace the front sprocket, the front sprocket and chain, or the front and rear sprocket and chain. I hate not maximizing the use I can get out of something. I have new sprockets and chains and gaskets and seals all sitting on the shelf ready to be used.
I say just replace the front sprocket and see if you can get another 10,000 miles out of the current chain and rear sprocket:D.
 

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I like JT sprockets. If your front sprocket looks like the one on the left in Admiral's photo, replace it. If you rear sprocket looks like the one on the left in Admiral's photo, replace it. If BOTH of them look like Admiral's, it is probably a good idea to replace the chain too. I did just what TW Brian suggested, but my O-ring chain only had about 6,000 miles at the time. The rear sprocket is still fine 5,000 miles later, or 12,000 total
 

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Discussion Starter #7
I did write that kind of confusing. I don't remember ever changing the rear sprocket. If it was ever changed it was probably only once. I think I am with the majority here with the steel sprockets. I think I am going to change both sprockets at this time. I may have changed the front one only once. I have the original front sprocket still here that the chain spun around it. The rear at this time is much worse than Admiral's pic. I parked in just the right spot at work and saw something shiny on the rear sprocket, broken teeth. Thanks for all the suggestions. I am going to shop around. I'll update with my choice after the change.
 

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Discussion Starter #8
One more question about the sprockets. My experience is the front wears out at least 2 front sprockets to one rear. Has anyone had any front sprockets that have lasted the life of the rear, and how many miles?
 

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I don't know man, I haven't ridden the TW far enough yet to wear out either [<6k miles on the current non stock size ones], but on everything else the rear has worn out well before the front sprocket.
 

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Need some education about sprockets. I looked up the JT sprockets on Amazon, then realized I had no idea how to specify what kind of hub I'll need.

sprocket choices.jpg

I know we need the smaller hub size. But there's a bunch of sprockets that look the same on the page, but have different model numbers.
I looked up the OEM part hoping to find something that would help, but the only numbers provided are stock numbers.

sprocket oem.jpg

Any guidance here would be greatly appreciated.
 

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They are bike specific JT Sprockets: Catalogue

Need some education about sprockets. I looked up the JT sprockets on Amazon, then realized I had no idea how to specify what kind of hub I'll need.

View attachment 111538

I know we need the smaller hub size. But there's a bunch of sprockets that look the same on the page, but have different model numbers.
I looked up the OEM part hoping to find something that would help, but the only numbers provided are stock numbers.

View attachment 111546

Any guidance here would be greatly appreciated.
 

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Discussion Starter #14
Thanks for the input. I was giving the sprocket set a thought until I remembered I red locktight my shifter in place and added a set screw. The front sprocket still looks good for now and I don't want to get out a torch, lighter or heat gun to get the shift lever off right now. Looks like I am ordering the JT rear sprocket.
 

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On a full size dirt bike such as a WR450, I can notice the weight loss of an aluminum sprocket and light duty tube in both acceleration and whoops. Weight on a wheel is the worst place to have too much.
On my TW I would and will have no problem running a steel sprocket. Much cheaper and last longer. The TW is used for a different kind of riding
 
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