Caliper upgrade on 81 GS1100E ??

[Anonymous]

Hi, looking to upgrades brakes on my bike with least changes. Has anyone swapped (upgraded) calipers while retaining same front end and rotors? Would love to know of a bolt on swap. I don't mind if I need to get new master/rotors and calipers, but would like to keep front end and wheel if possible. I tried search and couln't find answer to this exact question. Thanks for all... JOE (1981 GS1100E)

[robinjo]

I have been wondering that myself, read somewhere that the GSX-R calipers are not a direct bolt-on unfortunately

[hamr26]

I used the calipers from a newer Katana on my '83 1100ES stock forks and the improvement is great. I used the rotors that came from the donor Katana. I made adaptor plates to mount the calipers. I have drawings for the plate if you are interested.
Dave

[Anonymous]

replacement calipers

which later model katana were they from? Just wondering how the thickness of the discs on each setup compare and whether it matters.
ger

[Anonymous]

Were the adaptor plates difficult to make?? I don't have a machine shop etc.. but would like to upgrade the brakes... Thanks JOE

[hamr26]

The plates were easy once I had all of the required dimensions. I did it the long way by making cardboard templates until everything lined up. After that, I transfered the template to steel and drilled and cut the final shape.

[Anonymous]

Oh yes.. definately inyerested in the drawings, or maybe take a photocopy of the template and just mail it.. whatever makes the most sense... What year and size katana?? Thanks.. JOE

[KW]

If you have plenty of spare cash check these out:

http://www.billet.co.uk/index2.html

http://www.pretech.co.uk

[Anonymous]

front callipers

Harrison 4 pots from UK. Not cheap, but better than ANY Jap set.