KR-1S.co.uk Forum

i've just got hold of a set of zxr 400 h forks and yolks,apart from a mudguard,what else do i need,will the kr bars fit into the 400 clipons ?,i want to use my kr's wheel and disc's with the bandit 1250 calipers i have......
can i use the kr's spindle or do i have to find a h spindle too ?
i suppose i'll find out when the forks arrive,but it would be nice to find out before hand
cheers
doug

KR1 or KR1S wheel ?

you'll need a 5mm spacer for the stem.
axle : original is too short, and the ZXR's is too big. best thing to do is turn the ZXR's down.

wheel : you'll need spacers and you'll need to align the discs since the KR's wheels are smaller.

brakes : if you have an S-wheel, you can use your discs, if you have a KR1, you'll need 300mm discs, but I don't thinck you'll find 300mm discs that fit a KR1 wheel.

cheers janbros
i will be keeping the 1s wheel......the spacers won't be a problem but modding the spindle might be a bit much for me.......

get a local engineering co to turn the spindle down to 17mm they will also need to make a new boss type thing for the other end.
the spacers will need to be 7mm for the wheel if your keeping the kr1s wheel and 5mm for the calipers.
ade.

I would go the other way....

Get the 'other size' bearings with the 20mm bore and matching seals. If you take the old ones to a bearing suppliers, I'd be very surprised if they didn't have the parts 'on the shelf'.

The bearings them selves will be about a fiver each, and the seals about three. Just make a new spacer to go between the bearings with a 20mm bore instead of the 17mm one.

Machining down a 20mm hardened spindle and cutting a new thread onto it seems to be a recipe for problems to me.

The standard bearing is a 6303-2RS I think, which is 47mm o.d. with a 17mm bore and 14mm width.

The alternative is a 6204-2RS which is 20mm bore with the same diameter o.d. and the same width.

This place do them and the seals:

http://simplybearings.co.uk/shop/advanc ... 14&x=0&y=0

As do this place:

http://www.bearingshopuk.co.uk/6204-2rs-2688-p.asp

Similar prices.

Added to that you know your wheel bearings are in good shape, something that might not be the case with those already in.

i couldnt get bearings anywhere (four different suppliers) to fit zxr spindle kr1s wheel, noone made or stocked them so i was in formed
ade.
the kr bars will fit the zxr clipons the bars are the same other than colour.
ade.

are you sure about the o/d for the kr1s wheel ?
ade.
have had no problems as yet with turning the spindle down( two years several track days many hard landings over the mountain ) cost was if i remember about £40 to get it done guy said there was enough meat on it i gave him the option of making a complete new one ( they do lots of stuff for nissan and nsk i think.
ade.