Primary Gearing Reducer

[2004xb12s]

Has anyone ever used this on an xb12? I really wanna know how much of a difference it makes and what kind of top speed you are getting after the conversion.

http://www.americansportbike.com/sh...f=A17150&sid=ajd8vmd3b2zax88f2j147h3r6r5ds4i4

 

[wolfo68]

It's literally the xb9 gearing in the xb12. the top speed will drop to like 130 but it gains a decent amount of pull on the low end (not that it's really needed).

 

[2004xb12s]

Ya I understand its just the xb9 gearing in the xb12.

#1 My xb12 wont go 130 so Idk where that info is coming from.

#2 Did anybody on here actually swap the stuff?

I want to hear from someone that did it and had actual results. I can sit here and ponder all day on what it would do but at the end I'm still left wondering because I dont know exactly.

 

[EricZ]

I have ridden several 12s with the XB9 primary gearing. Just shy of 130mph is where the 12 will top out with the gearing change and it makes 1st gear wheelies a good bit easier. I'm not a big fan of it only because you do shift into 5th sooner around town, but not by a lot.

 

[2004xb12s]

Are the Rpms on the highway much higher than with the stock gearing?

 

[Xbscg87]

I have a xb12 with the xb9 gearing and I run about 4000 rpm at like 75 I believe... I bought it that way so not sure how different it is from stock

 

[2004xb12s]

That's not too much different from mine. Any idea what it tops out at?

 

[Xbscg87]

No I've never topped it out

 

[wolfo68]

My xb12 wont go 130

If your XB12 won't do 130 you have a problem, the gearing should let it get to 143

 

[TexasBueller]

143? Mine definitly won't do that.

 

[sparky300]

I'm not a big fan of it only because you do shift into 5th sooner around town

I seldom hit 4th much less 5th around town, and 4000 is the sweet spot on my 12 with stock gearing