2002 cbr 954 forks direct bolt on for gs1100

[first timer]

keep us posted, some day i would like to walk this path.

-ryan

[katman]

Let us know how it all works out

[Anonymous]

forks

Hi Mookie, I think you will find that the gsxr1000 forks are going to be more trouble than they are worth unless you are building a drag style bike where ground clearance is not an issue. They are very short and made for a very light bike. They have no provision for a speedometer drive. They are definately not a bolton and even if you get them on the bike you will need to do some major spring and damper changes to make them work worth a dam. I have no real world experience with this fork but know others that have tried to use them on earlier bikes because they are plentiful and relatively cheap on ebay. They can be made to phsically bolt onto your bike if you take both your current set of yokes and the gsxr yokes to a machine shop and have them remove the steering stem and replace it with a custom tube that replicates the gs stem. This is not that big a deal but when you are done you still have a major ground clearance, ride height isssue. Even with custom stepped down yokes these forks are very short. There are a few companies that make very tall fork caps in England for these forks. I believe they give you around two inches of additional length, maybe a little less. You can only go so far because the spring preload adjusters and dampening adjusters remain recessed inside the extension in their original location and they are threaded into aluminum and made of aluminum so you have a strength issue if you go overboard. I think you would be better off with 92ish GSXR1100 foks. They bolt on. Have provisions for a speedometer drive. Provide cartridge style daMPENING and full floating rotors and will accept a bunch of different 4 and 6 piston callipers without modification. They also come with the stiffest OEM springs of any of the USD forks. These forks bring good money because the demand is high and the supply is low, but by the time you get the latter style forks to work properly you will spend alot more money than you think. Don't get me wrong the fork you have is a wonderful peice of engineering, but there are more practical---cheaper and easier---- ways to go. Steve

[pointshyofgenius]

The CBR 954 top fits the 1997 GSXR 1100 forks perfectly....

I just discovered this today.... quite by accident. I bought a set of 1997 gsxr1100 forks on ebay but I did not realize that they had the sealed roller bearings or I never would have bought them.... Anyway, I just received a nice used Vortex CBR 954 top triple.... and it fits beautifully!!! Turns out these 1997 forks are 52mm up top and over 54mm and a little less than 55mm on the bottom triples. (Maybe my calipers are off by a fraction of a mm??!!) I line up the top and bottom triples and the offset appears to be dead on as well with the stem coming thru the Vortex CBR 954 dead center .... I will fully assemble the entire front end this weekend and post an update. If it installs, I plan to just replace the newer style head bearings with the older style as the stem length and thickness are identical to the older GS1100's.

The advantage of course is LOTS and LOTS of clearance. The 97 forks are 30.5 inches long and the of course the drop down triple gives almost another inch.... I'm stoked!!

[katman]

Points......

the 954 forks are 50mm top not 52 and 54 lower. They fit 750 forks not 1100. check your numbers?? something is off. I also checked that top triple with 97 750 forks and the offset is off by too much.

I have the vortex 954 triple is installed on my beast now with the 93 750 forks.

cheers.

[isleoman]

Here's one solution for mounting handle bars to 954 triple. Kinda expensive though http://cgi.ebay.com/ebaymotors/ws/eB...527268852&rd=1

T

[pointshyofgenius]

50mm top

Katman

Well I was mostly wrong and only marginally right. The tops are 50mm and the Vortex does fit.... but as you said ....it does turn out the offset for the stem is off and will not work with these 97 1100 forks. When I tightened and aligned the bottom triple I lost the alignment. I guess I'm looking for the Honda bottoms on ebay.... thanks.

[katman]

Points.....

The bottom 954 triple is 54mm as is the 750's. I know the busa forks are 50/56 and the bottom won't work.

Are you sure the 1100's are 54mm bottom??

I may be wrong but.......

[marcovandevelde]

Looks very good Katman! Looked at your site, the side-view of the engine is just awesome!

Well... Just to add one more possibilty for the onlookers I give you my solution to ''too short forks syndrome'': Use RF900R triples (the top one is a little stepped down), they fit straight into the 1100 (but needed a new stem made for my 750). The trick here is to bolt a complete 43mm '89-'90 FZR1000 front end into it, it fits! The forks are only 1" shorter than the orig forks but this is made up by the stepped triple so there is no problem. Except you have to take a smaller dia wheel into account ofcourse. Gives plenty of ground clearance. You can use the rubber-mounted top half of the top-triple with the moulded-in half-handlebar mounts or throw that away and just put clamps on the bottom half of the top-triple to mount bars onto.
The FZR spring- and damping rate are fine for our bikes too, I just put in a little heavier oil. And the FZR speedo drive is calibrated for the suzuki item.

Keep feeding us with these pictures!

Greetz, Marco.

[katman]

Marco,

You gots a pic of this beast?

[marcovandevelde]

Hi Katman,

Errr... You mean pics of the bike or specifically the forks?
The bike is on http://home.wanadoo.nl/marcovandevelde/turbo%20GSX.htm
In the pics is still an old ugly front mudguard, just ignore that.

Greetz, Marco.

[Anonymous]

954 triple

seems you could take the bottom triple and have the fork holes milled out 2mm to accept the BUSA forks then they become a "direct" bolt on also.Or am i missing some other issue here???there's tons of them complete on ebay.

[Anonymous]

oops

errr.. i mean 1mm milled out.(sorry,no dew yet,still foggy).that would give you the needed 56mm for the BUSA frt. end.

[Anonymous]

954 triple

well i don't excactly mean milled either. you could take them to a machine shop with a wire EDM.real easy to do in that machine.shouldn't cost too much either.every wire EDM has a circle program in it.

[katman]

the 954 triple fits the busa bottom?? why have one bored? Also I would want to make sure there is plenty of strength left after the boring....a lower triple failure would be a big owie.