Bigger rear sprocket for a 03 xb9r??

[Kid1620]

To keep I short and sweet I want a bigger sprocket for my 03 xb9r and haven't been able to find one and ideas

 

[upthemaiden]

http://www.buellxb.com/Buells-for-S...ale/Buell-XB-Stunt-kit-chain-conversion--cage

You'll have to go with a chain conversion kit if you want to change your gearing.

 

[Kid1620]

That just what I didn't want to hear lol thanks

 

[wolfo68]

to change the rear sprocket you'll need a different belt and the biggest is the cr's 76 tooth, if you're trying to get more torque look at buying the smaller front sprocket

 

[loose1]

If you upgraded to the +04 pulleys you could use the 1125 r or cr sprocket. You would need to try a couple different belts. I did this on my blast. I have a cr rear and a tuber front with a 135 belt and an adjustable idler. I need to find a 133 belt because I want to put a 26 tooth front pulley on instead of the stock 27 tooth.
Matt

 

[Kid1620]

You think if I get the setup for a 12r that I could just swap everything over

 

[loose1]

yes, but you will have the same gearing as you have now. R or S, same thing. The ss. stt, x, xt are the same pulleys just a longer belt.
Matt

 

[Kid1620]

The rear speller on my buddys xb12r is bigger then mine but he has an 08. Wont a bigger speller lower the rpms at say 65 from just over 3400to around 3100

 

[loose1]

Your belt wont fit the newer sprockets. It's a different design.
Matt

 

[Kid1620]

Yeah I'd get a new belt too. bigger sprocket longer travel longer belt. So I can't take the newer xb12r setup and a new belt and put it on my 9r

 

[loose1]

Again yes you can but it wont change your gearing. All the xb have the same final drive ratio.

 

[Kid1620]

Thanks for your help.

 

[Rich]

I just bought a 2003 xb9 firebolt with a broken belt. The belt has 155 teeth. I'm confused. The sprockets are obviously bigger, stock is supposed to be 128 teeth. Can anyone help me out? I read of guys installing sprockets off of xb12's but I don't know what I have here. Belts are hard enough to find, I'd hate to buy the wrong one . Thanks, Rich

 

[Barrett]

I just bought a 2003 xb9 firebolt with a broken belt. The belt has 155 teeth. I'm confused. The sprockets are obviously bigger, stock is supposed to be 128 teeth. Can anyone help me out? I read of guys installing sprockets off of xb12's but I don't know what I have here. Belts are hard enough to find, I'd hate to buy the wrong one . Thanks, Rich

rich: the "supposed to be" info you gleened somewhere, is incorrect. below are the correct specs and belt part numbers for the UNIQUE 2003 XBS/L/R models only:

BELT: 155 TOOTH COUNT
F PULLEY: 30 TOOTH COUNT
R PULLEY: 72 TOOTH COUNT
FACTORY CORRECT BELT PART NUMBERS THRU THE YEARS:
G0500.02A----------SUPERSEDED TO GO500.02A8----------SUPERSEDED TO G0500.02A8R
any of the above is correct fitment

the 128 tooth belt you're referencing was introduced in 2004 for the entire XB series which had stock 65T rear sprocket

 

[Cooter]

Very good info ^^^ Who's is this masked man??