hi, back again, i also heard of a clutch kit to help my bike run better. i am running 27/11/12’s in the back, and 27/9/12’s in the front. i heard some thing of a washer?[spacer, shim?] to put behind the drive clutch? any one know of a kit, or ant thing about this? these tires are big, and a little help on the bottom end would be great. thanks.

hi, back again, i also heard of a clutch kit to help my bike run better. i am running 27/11/12’s in the back, and 27/9/12’s in the front. i heard some thing of a washer?[spacer, shim?] to put behind the drive clutch? any one know of a kit, or ant thing about this? these tires are big, and a little help on the bottom end would be great. thanks.