2002 cbr 954 forks direct bolt on for gs1100

[Guest]

anyone who is looking for a nice option for the shorter gsxr 750 forks can use the 954 triples for a direct bolt on with 91-93 gsxr 750 forks. The bearings are exactly the same and the stem is the same length.

The top triple is a step down and gives another inch of length to the forks. 1100 forks will not fit because the 954 triples are 50mm top and 54mm bottom.

I did an enormous amount of fartin around until I realized the complete triples fit. After I tried to get the top triple to fit all the other gsxr bottoms...and it doesn't.

The only mod is the stering stops need to be moded to use on gs1100's.

They also fit perfectly inside the 82-83 katana fairings.

http://groups.msn.com/GS1100KATANA/83katbuild.msnw?action=ShowPhoto&PhotoID=5

 

[morthrane]

Hrm, nice.

Did you need to turn up new spacers for the front wheel and rotor offset?

Now you've got me wondering if LSL's handlebar conversion kit for the 954 has the same step down as the Vortex or OEM top triple.

 

[Guest]

everything but my triples are gsxr. no spacers no nothin...
These triples are the same spread as the gsxr.

Direct bolt on with no mods

 

[Billy Ricks]

Nice work. I'm hoping Santa will see fit to bring me a new front end. This is good info.

 

[Guest]

I am happy but choked too.

I put in a ton of time and work to try and get that top triple to fit a gsxr lower. I had got a 954 lower from ebay but it was so bent ci couldn't get forks into it. I saw that the lower bearing fit but didn't have the top bearing so I tried to fit the gsxr top bearing but the ID of the bearing was to small and wouldn't fit over the stem. When I got this lower I tried it anyway because I had the top bearing and IT FIT!!!!!!!! The id is larger but the OD is the same.

Was I ever happy because the gsxr stem I had picked up and hoped to use is a diff OD as well so it was looking bad till I tried the obvious .... and it fit...UNBELIEVABLE.

 

[Diamondj]

Katman,

How much of the CBR954 front end assembly did you use besides the triples? Did you use the CBR fork legs, wheel, discs, and calipers or was the spacing between the fork tubes the same between the CBR and the GSXR components? I adapted a CBR600F2 front wheel and 41mm VTR1000 fork tubes to my GS1000 and just about drove myself crazy trying to get it all to work!

Jim

 

[Guest]

the complete gsxr 91-93 and prob. up to 95 slide right inot the 954 triples.

the spacing is identical. the offset is not. Just like 96-99 srad triples are a different offset but same spacing. No futsing around at all but for what I had said about needing to mod the steering stops on the lower triple.

It is a no fuss no muss install.

NOTE: the 929 triples do not work with the older gs's because they have the same bearings as the 96 and later gsxr. (roller not needal tapor)

 

[first timer]

so what are some good "recipes" for front end swaps?

maybe we can get a a real dumbed down list of what front end things work for which bikes. Just like a recipe take one 04 cbr triple, one 85 vfr forks, one 67 kaw front wheel and put those together and you have a new front end for your 78 gs 1000. You know sometin like that, for all us newbies that don't know a offset from a taper bearing.

thanks,

-ryan

 

[Guest]

Sorry dude,

I am no chef. more of a fast food cook.

I only know gs1100's/750's 80-83 and gsxr's inverted forks 91-95

91-95 gsxr 750/1100 forks/triples wheels complete work as direct bolt on for the gs.

91, 93 I believe have the correct lower steering stops. The 92's need moding.

2002-2004 954 (not 929) can be substitued for the gsxr triples or you can use the 954 front end but it is quite short.

the key to a swap is to swap the entire front ends and not to mix and match unless you now they are a direct bolt on.

Kawi....?? unknown. I have spent almost a year just sorting out what I have just told you. maybe someone else can help.

 

[Anonymous]

Katman,
You may have saved me a whole heap of futzing around. I have a set of RC51 forks and lower clamp floating around to fit on my kat. They are a great quality fork and I got em cheap cheap. But, they are short and I was looking at having to get a stepped top clamp made. If the gods are really smiling, the 954 clamps will have the same spacing and offset as the RC51 so I can just get a top clamp and solve the problem. If you have a chance, would you mind measuring the fork leg spacing, offset and diameter of the stem at the top where it goes into the clamp.
From looking at photos of the 954 bottom clamp, they look very similar to the RC51 item. Hopefully Honda was into standardising sizes like Suzuki.
Thanks.

 

[Anonymous]

So I just got myself a set of triple clamps plus the stem. I believe they are off of a 929 since the bearings are the roller type rather than the tapered ones. The front end I'm using is off a GSXR 1000 from 2002. The Honda triples have the same diameter fork holes but it seems to be a few milimeters wider than the stock GSXR triples (in total width). I'm wondering if you guys have run into the same issue. I don't think this is gonna work since I'll have to somehow widen the axle by a few mm to keep everything in line and I suppose then I'd have to get some proper width axle spaces made to keep everything from wobbling around. This is puzzling. Is the 954 that much more different, spacing wise, than the 929?

 

[Guest]

Mixin and matchin is a drag at times aint it!!!!

The 954's are the only ones that fit the GS, and only the 91-93 gixxer 750, 91-95 1100's. The spacing for those years are correct. Sould also fit the srad forks too.

The spacing does not work for 2000 forks but the axles and spacers for the srad should work.

Your in the middle of a bit of a mess. Bin there mannnny times. The 2000 plus forks are pretty short even with the drop top triple.

Good luck.

 

[Anonymous]

The spacing does not work for 2000 forks but the axles and spacers for the srad should work.

So, are you saying that if I did find a 954 set of triples that it still wouldn't work with my 2002 forks/wheels but if I found some earlier year axles/spacers it would? So, then my question is would SRAD axles and spacers work with my 2002 front wheel?

Or are you saying that the spacing on the 954 would work with my already procured 2002 frontend?

BTW, could you clear me up on the SRAD/post SRAD years?

 

[Guest]

actually I believe the 2000 forks are a few thou smaller than the earlier forks. The triple will be a little loose.

I don't think the rims are the same but your best bet would be srad front wheel witht the flat rotors. It may be the same width rim as the 2000 wheels. IF so then you can use that axle and spacer if the od of the axle is the same and you can use the srad fender.

The problem is the newer forks are set closer together as you know so the fender/spacers will be smaller too.

All that a side, you better get a good vernier on the newer forks...I am sure they are a smaller diameter than the 954 and earlier 90's forks. Not by much but enough to consern me with safety.

 

[Anonymous]

After getting this months Streetfighter magazine the first bike the profile is a GS with a 'busa front end. It appears like it's got decent ground clearance and now I'm wondering if the Busa and the 02 GSXR 1000 have the same length fork legs. If so, then I think I may be able to scrape by (bad pun ) with the forks and triples that I've already got.

 

[first timer]

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

-ryan

 

[Guest]

Let us know how it all works out

 

[Anonymous]

forks

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....

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!!

 

[Guest]

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.