4.5" GSXR wheel in stock GS1150 swingarm (does it actually fit?)

[GS1150Pilot]

I have been working on the 1150 and need to know how much of an offset front sprocket I will need to run the GSXR 4.5" wheel in the 1150 swingarm. Can anyone running a similar set-up give me info?

[posplayr]

A first order estimate is the offset is approximately 1/4 of the difference in wheel widths.

[GS1150Pilot]

I'm guessing that would be about 3/8" ...

[posplayr]

I'm guessing that would be about 3/8" ...

why not use arithmetic?

I don't know if there is a differences in offsets between an 1150 with a 3.0" rear wheel and an 3.5" rear wheel but

4.5-3.5/4= 1/4"

The basic premise is that the chain is spitting the space between tire and frame. Now increase the tire by X-width and the chain needs to slide over by X/4.

[GS1150Pilot]

I was using the original wheel measurement, which was 3" as a basis. It would seem I have 1/4", 3/8" and 5/8" options in offset countershaft sprockets through D & G.

[posplayr]

I was using the original wheel measurement, which was 3" as a basis. It would seem I have 1/4", 3/8" and 5/8" options in offset countershaft sprockets through D & G.

The simple way to do this:
1.) is to mount your rear wheel and center it (use the insides of the swing arm forks)
2.) use the string method to align it the front and rear wheels.(makes sure the rear wheel is straight)
3.) put washers behind the countersprocket till the chain is parallel to the rear wheel.(increase as required)

+/- 1/16"-1/8" is close enough

[GS1150Pilot]

About what I figure, and why I'm hovering between the 3/8 and 5/8" offsets.