Sorry to resurrect this thread, but it concerns these metal tension straps.
I get the small one, that is a D=90mm BMW part no 33171458197. Motorworks part no TRA58197. Fits nice and tight.
But I don't get the other larger one. I'm assuming it's the D=132mm BMW part no 33172335120. Motorworks part no TRA35120. It's as slack as anything when fitted and that's with the clamp at it's smallest diameter ( fully screwed in ). I compared it to another clamp from different source thinking it might be a batch problem, but exactly the same. I recon the clamp should be 20mm shorter in circumference to get a tight fit.
Before anyone asks. R1100GS final drive to a R1150GS twin spark swinging arm, not that that should make any difference.
Short of modifying the clamp (cut and Spot weld) anyone any suggestions.