GSXR 1100 rotor diameter

Spondonrider

Spondonrider

Hero member
Location
Colorado
Can anyone tell me what the stock front rotor diameter is on the 86/87 GSXR 1100?

Its amazing what you can find on the internet, and really amazing what you cant find... I know its there someplace.


OK, once I originally posted this I did another search and found that the 1100 had 310mm rotors and the 750 had 300mm. Can anyone confirm this?
 
Heres some info I gathered of the ineterwebimijig

REAR WHEELS:
Model Wheel Size Sprocket Carrier Disc outside diameter
1985-87 750 18x3.5" 5-bolt 8.675" (220mm)
1986-87 1100 18x4.0" 5-bolt 8.675" (220mm)
1988 1100 18x4.5" (3-spoke type) 5-bolt 8.675" (220mm)
1988-89 750 17x4.5" 5-bolt 9.5" (240mm)
1989-90 1100 17x5.5" 6-bolt 9.5" (240mm)
1990-91 750 (U.S. '92 same) 17x5.5" 6-bolt 9.5" (240mm)

All rears use 20mm axle
86-87 carriers will NOT fit on 88-89 wheels! 

FRONT WHEELS:
Model Wheel Size Axle Size Disc Outside Diameter
1985-86 750 18x2.5" 15mm 11.8" (300mm)
1986 1100 18x2.75" 15mm 12.2" (310mm)
1987 750 18x2.5" 17mm 11.8" (300mm)
1987 1100 18x2.75" 17mm 12.2" (310mm)
1988 1100 18x2.75" (3 spoke type) 20mm 12.2" (310mm)
1988-89 750 17x3.5" 20mm 12.2" (310mm)
1989-90 1100 17x3.5" 20mm 12.2" (310mm)
1990-91 750 (U.S. '92 same) 17x3.5" 20mm 12.2" (310mm)

 
Spiegler in Germany (who bought ABM some years ago) build them to order. Give them the dimensions and they make what ever you want as a one-off for roughly 450?/pair of discs...  ;)
 
Laverdalothar said:
Spiegler in Germany (who bought ABM some years ago) build them to order. Give them the dimensions and they make what ever you want as a one-off for roughly 450?/pair of discs...  ;)
Click to expand...

too expensive Lothar, we buy a set of floating 310mm rotors plus the smaller rear rotor for $450, brand new
Metalgear in Brisbane

 
Best price for EBC I'v seen is ?145.00 each while after market rotas for the later GSXR models are around ?155.00 a pair. 

Another option is using a plain rota, around ?100.00 a pair and tapping Simon to turn up a couple of centres for me. But then again, as I'm racing, buy right buy once springs to mind; have a feeling my Scottish roots are having an influence on my wallet ;)

Still, picking up a pair of calipers and new pads for 40 quid, makes me feel a little better :D
 
I'm also running Metalgear discs & pads on my GSXR'd wheel RGS.
One figured breaking under most circumstances, two fingers is a panic stop, squealed the front tyre on one occasion. :o
Work well and lots of feel, will stick with them and they were a very good price in NZ.
 
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