Topic: Help me ID these forks

[Scott S]

 I picked these up from Craigslist really cheap. The seller couldn't remember the exact year. I have a chart, but using a tape measure and a converter, my measurements aren't quite exact enough to narrow it down.
 
 Here's what I know:

 GSXR 1000, either '03-04 or '05-06. My very rough measurements come out to be 720-ish mm long, but both versions had a 720 or 730mm fork, so that doesn't tell me much.
 
 Radial brakes and 4 piston calipers, but again....al four years had that.

 Top and bottom O.D.'s are same for all for years.

 The offset is either 32mm ('03-04) or 30mm ('05-06) and I can't trust my measurements enough to decide. I'm using straigght edges, calipers, rulers, tape measures, etc. and trying to measure center of steering stem to center of forks. I just can't be accurate enough to tell the difference between 30 and 32mm.

 The only reason it makes a difference is that I need to source rotors for my swap. The '03-04 used a 300mm disc. The '05-06 used a 310mm disc.

 Any help here?

[Scott S]

 Looking at eBay, most of the 05-06 calipers are black and most of the 03-04 calipers are gold. But not all.

 Does that really tell me anything?

[754]

Mount caliper and measure from pad to axle center.

[Scott S]

 Center of pad? Or towards the rear edge, where the edge of the rotor would be?

[754]

Edge of the rotor is just past outside pad edge.

[Scott S]

 It's difficult to get an exact measurement, but here's my thinking:

 300 mm divided in half is 150 mm, or 5 29/32".
 310 mm divided in half is 155 mm, or 6 7/64".

 There's a stop at the back/center of the caliper. Pushing a ruler up into the caliper against that stop and trying to eye ball the center line of the axle, it's about 6" even.
 Since the rotor can't contact that stop, sliding it forward a little bit gets me just under 6". That means it must be the 300 mm rotor. And that points to '03-04 GSXR 1000.

 Good thing is there are lots of 298 mm and 300 mm rotors out there with the bolt pattern I need to fit the wheel(s) I want to use.