I have a bike with that is a 92 F2 with a 900rr engine in it? I was wondering if the rear sprocket is the same size on all of the honda bikes? Meaning that if it is a 45 tooth rear sprocket on a F2 if that is the same as a 45 tooth sprocket on a 900rr?

My bike has a 15/45 type sprocket setup currently and it seems to run at pretty high rpm's. Going 60 mph its turning around 5800 rpms. Not sure if this is about right or not? Also seems like the bike would hit the redline at about 130 mph with this type of gearing.

Thanks
Tim

 

No they are not the same size sprockets on each bike. yours comes with a 45, F4i's come with a 46. I think 900's come with a smaller one.

 

So a 45tooth sprocket on a 900rr is not the same size as a 45 tooth sprocket on a 600F2?

 

I think what he's trying to say is that the 900rr uses a rear sprocket with less than 45 teeth.

 

F2's come with a 43.

 

Yea thats what I mean,

The gearing in the Transmissions are different.
A 45 tooth sprocket is a 45 tooth sprocket is a 45 tooth sprocket. You just have to make sure its the same size. Some are 525 some are 520 some are 530 and so on. If you put the wrong sprocket on with the wrong chain than it can be dangerous. If you have a 900RR engine and tranny on an F3 with the stock F3 sprockets than thats why you are topping out so early. You need to get the stock sprockets from a 900RR to make your bike run normally and not have such a low top end.

If that doesnt help at all than you can just give me a kick in the nuts or something. I figured that my info is what you were lookin for.

 

Makes perfect sense.

 

The problem ain't in the rear sprocket. The stock front sprocket is 17 tooth. Going down 2 teeth to a 15 on the front sprocket changes things about 10 percent. You will have 10 percent better acceleration, but top speed and mileage will suffer. If top speed was 150, it will now be 135. If mileage was 40, it will now be 36. If you're not happy, get the stock 17 tooth.

 

Aha now its all clear as mud! lol
I have the 15t sprocket in the front, so looks like I need to change that to a 17t. The rear sprocket is aluminum and looks a little worn, so i will just replace the whole works with the stock type of setup.
Thanks for the help
Tim