I think the thing to do is to just upgrade the front-end to the 1993+ 43 mm from your stock 41 mm. Then you can use the Yamaha R1 100 mm spacing calipers, which are plentiful and cheap, much-cheaper than the Suzuki caliper adapter kit that people use for their '85-'92 front ends. Sure you can get great brakes but you're still stuck w/the crummy 41 mm OEM forks. Don't waste your $$ going Progressive Suspension springs & cartridge emulators, UFO forkbrace, GSXR/Hyabusa calipers & adapters on those spindly forks. Spend it on the '93+ & you will see a noticeable difference, and you don't need to spend the extra $$ for the adapters for the Suzuki calipers. But, it's your $$, I just think you'll be disappointed for the $$$ you will spend. Especially if you take a ride on a late-model fork w/springs, cartridge emulators, and R1 or later FZR1000 6-piston calipers, w/SS lines. Yes, you need to spring for top & bottom triple trees, downtubes and sliders, but take your time and you can do it cheaply. These pics are not necessarily for your bike as I don't know the dimensions of what is shown, but you can find complete braking systems and maybe even a complete front end to swap-on.
Now, for another suggestion, if this bike
"has been off-the-road for nine years," despite your ministrations to revive the bike, it would probably be a prudent thing to do as-far as your family is concerned, to put a few rides of increasingly-extensive use before you go-out and pull the trigger on your bike. You may be able to outrun the Hounds of Hell with your riding experience, but is it such a big-deal to put the "
not-used in nine years" bike through a few heat/cool cycles, where you return to the shop, and give everything a good going-over, as a visual inspection will reveal developing issues that came-about during the time you rode it? You might find a brake line has begun to weep at a banjo, or an aneurysm has popped-up (and may-be on its way to popping itself) on a flex line. How-about a weeping seal pissing fresh lubricant onto your rear tire, or leaking fork seals that "were fine when I started-out" but now failed unexpectledly because of a few hard landings after some gaping wild wheelies, dumping 10W fork oil onto both of your calipers and the rotor. Stopping from 130+mph would be a wild experience when that happens, and soccer moms and drunks aren't looking-out for you on your resurrected ride, you know. :confused2:
