KR-1S.co.uk Forum

is there any easy way ti visually tell the two apart??

cheers

yeah the 1 arm has rounded off parts for the chain tesioner,1s has square blocks with the tension screw towards the forks if that makes sense

this THIS

is a 1 swinger then

that will be right shimmerny!other thing is if you want one of them,i have one you can have for £25 including postage friend

might take u up on that
i need to check if i got money in the PP account tho

also the 1s swingarm is nicer looking, more heavily braced and has a larger swingarm pivot diameter. either machining the kr1 frame or sleeving down the 1s swingarm pivot will allow fitment easily. apart from that and the little spacer in the caliper hanger been a little thicker (i think) there almost a straight swap. the 1s swinger looks good when polished. my kr1 based bike uses a 1s swingarm and was acheived by machining the swingarm pivot on the kr1 frame. i think? its kr1 (17mm) and kr1s is (20mm) but im not 100% sure.