Gearing Question

[FireMedic]

I have a 2007 hayabusa with 17/40 factory sprockets. Full Brock's alien head, PC3, and marble mod. I am thinking of going +3 in rear. Having a 43 tooth sprocket could anyone give me an idea of how dramatic of a change this will be as well as what toms I'd be doing in 6th gear at like 80mph and top speed rpms. Any advice would be appreciated. I will definitely be going with a SpeedoHealer to.

 

[Pecan Pouch]

Three up in rear will raise your rpm's up about 500 rpm's at 70. So if I remember correctly you will be about 4500 rpm's at 70. I think top end would be approximately 180-190. Depending on what your redline is set at.

 

[dadofthree]

Top out around 170 unles you weigh sub 160. gearingcommander.com

 

[FireMedic]

Thanks for the info. By any chance does anyone know if a 2004 gsxr1000 rear sprocket fit on a 2007 hayabusa?

 

[sixpack577]

Sprocket won't fit.
Low 170's is about it on top, with perfect conditions.

 

[sixpack577]

Three up in rear will raise your rpm's up about 500 rpm's at 70. So if I remember correctly you will be about 4500 rpm's at 70. I think top end would be approximately 180-190. Depending on what your redline is set at.

500 to 600 rpms is right.
190 top end, no way. Only with stock gearing, unrestricited, and perfect conditions.
170 is about it, maybe a couple more mph