Join Date: Jul 2013
I Ride: '12 zx6r track bike
I agree that Andi0 needs to be very careful adding an 8 mm shim while having that much of the fork tubes prodruding above the top triple clamp! You do realize that adding an 8 mm shim will raise the rear ride height at least DOUBLE that due to the shock linkage. I added a 6 mm shim to the clevis of my '12 (stock shock length 339 mm) and it raised the rear above the axle over 14 mm, causing me to "tippy-toe" with my feet now; 32 in inseam. Oh, and my forks were lengthened 15 mm by the Racetech kit, and lengthened another 5 mm by running flush with the top triple. I know it's not the same bike, but ...
Finally, the comment by the OP about the "twitchiness" of the front end until the steering damper was turned up implies the rear is too high relative to the front already. You shouldn't use the damper to cover up an underlying problem. I even watched a YouTube video recently by West coast suspension guru Dave Moss to the same effect: you should fix the problem of the head shake being caused by the bike's geometry before utilizing the steering damper.
If the OP's rear shock spring is too soft and the rear is sinking down excessively I can see ... but if not the raising of the rear end should proceed with extreme caution; especially at track pace. Just be careful...
Last edited by Duc995; 01-08-2017 at 01:48 PM.