In an odd twist of fate, and an obsession with e-bay, I have 3 pairs of M1R forks now. One pair is from a 907, as its grey, and fits the later calipers. the other 2 pair are from a 750, I think. One is black, and the other came to me was yellow. The 750 forks are shorter, the 907 really long. I'm putting them on my 750 Sport. I've had a pair on there for several years with good results. I slid the forks up into the triple clamps so about 20mm is showing.

I am planning on a fork rebuild this fall and so here's the question. Can I put those bottom sliders from the 907 forks on some of the shorter tubes from the 750? Are all the guts and springs the same? I know I will need to adjust the preload spacers, and plan to do that anyway to tune the suspension in. Are there any differences in the damping rods over the years? (beside the first year 851)

Any insight is appreciated.

Cheers,

as far as I do remember that`s possible. The stanchion tubes have the same diameter and I think the 750 and 907ie lower tubes have the same length.
The differences - at least in the M1R forks I`ve owned so far - were different length stanchion tubes, different length preload tubes and fork springs. All the rest was the same.
Do you have 17" wheels or why would you want to use the lower tubes from a 907ie which have higher brake caliper mounts to match 300/320mm discs ?

G.

Yes, I have 17" wheels and 300mm brakes by use of an adapter for the calipers. I guess I'll be moving to 320mm rotors.

Cheers,

If you take the 907 ones apart, I would be very grateful if you could answer this:
viewtopic.php?f=3&t=3378
Is there a bushing on lower end of both springs?