Afternoon,

I’m turning my CBR600FY into a street fighter and would like to swap the rear wheel to one from a CBR900RR. I’ve read that it’s possible but can’t find any guides on what I need to do.

If anyone can help that that would be great.

Cheers,

Sammo

 

What is exactly a CBR600FY? Im not familiar with bike codes across the pond. With that being said, you have to have a sprocket carrier milled/shaved thinner because the wheel will be wider taking up valuable room & the milled/shaved carrier allows the rear sprocket to stay in line with the front sprocket. Then a custom rear brake caliper mounting system needs to be invented along with all the spacers etc. So probably more trouble than its worth. If you have custom wheel fixers over there, an easier option I would think would be have your original wheel widened. I might be expensive but you wouldn't have to have all the custom parts made for it to work.

 

I did a similar swap on an old race bike I had. I was putting a cbr600 f2 wheel on a Yamaha FZR400, but the problems are the same. In my case I:
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1) removed the stock wheel, along with the adjusters, brake bracket, etc.
2) temporarily installed the new wheel on the bike. I was lucky that the axle diameters were the same. If they hadn't been it would meant either new wheel bearings with a different I.D. or machining spacers.
2) with the wheel in place and as straight as a could get it I put a long straightedge on the rear sprocket and measured the offset that needed to be compensated for.
3) the wheel needed to be moved inward by 5/8" or so which meant that the sprocket carrier had to be made thinner.
4) before I could machines me the carrier, the sprocket studs needed to come out. This involved welding nuts to the studs and turning them out with a breaker bar. At first I thought I had done something wrong, but the others guys I talked to who had done it agreed welding was necessary.
5) with the sprocket carrier in the lathe it was apparent that the dust seal over the bearing would have to go. I substituted a sealed bearing for the original open one.
6) I managed to salvage the original sprocket studs because they also needed to be shortened. I bought thinner nuts from McMaster-Carr to chieve the clearance I needed
7) I was also lucky that the chain pitches matched so I didn't need to source anything there.
8) the cbr brake disk was close enough to the FZR so that I could use the stock caliper. I shimmed the disk over a few mm's in order to use the stock caliper bracket.

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