[potshot]

Is there a difference between 91 and 92 sprockets... I guess for a 750? I'm not really sure what conversion was done to my 86 711, but when I'm looking for sprockets (I'm changing both, and the chain) It looks like there is a cut off between those two years.

The part number on the wheel is JS 17xmt 5.50. It looks like a bunch of obvious and nonspecific information.

Currently it has a vortex 525A-45 sprocket with a 6 bolt hole circle of 100 mm and an ID of 75 mm.
Any ideas?

?

 

[Builder45]

There are many sprockets that fit that carrier. Here's a short list of what machines use the same carrier. If you're going with a 520 conversion, I used Sprocket Specialists with good results for the rear sprocket.

 

[Fireteacher]

+1 for Sprocket Specialists


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[Seay Biscuit]

I've just went 16-43 and I freaking love it...

 

[TwistedMister]

be sure to match your pitch! if its a 520, everything must be a 520 pitch! so forth, bring in your sprox to match splines and bolt patterns, if you order online, measure your rear bolt pattern and compare, have them measure on their end if its not posted on website, count spline teeth and compare for counter sprocket..

 

[potshot]

Thank you, sir. That's great data that will likely help someone in the future too. 👍

There are many sprockets that fit that carrier. Here's a short list of what machines use the same carrier. If you're going with a 520 conversion, I used Sprocket Specialists with good results for the rear sprocket.
View attachment 582618

 

[potshot]

Where do you see the change? I think mine are at 15:45 right now.

I've just went 16-43 and I freaking love it...

 

[Fireteacher]

Where do you see the change? I think mine are at 15:45 right now.

I suspect S. Biscuit posted in the wrong section and has a much newer bike, maybe a ‘Busa, with a sub 40 tooth oem rear sprocket.

I think most, if not all, oil cooled bike rear sprockets had around and/or at least a 45 tooth rear and usually a 15 tooth front sprocket. When you lower the front sprocket tooth count, or increase the rear sprocket, or both, the acceleration, quickness off the line, is increased. A very common change is to go 1 down on the front and 2 up on rear tooth counts. Although this will decrease your top speed, the acceleration improvement outweighs that loss for most people. In fact, many aftermarket chain and sprocket kits incorporate these changes if so desired.

I don’t know what your oem gearing for your bike should be but a search on the site will likely turn up the chart that shows that. Comparing your current gearing to the chart will tell you if what you have is stock or not.


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