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GSXR Fork Information / Permutations

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528K views 1.1K replies 197 participants last post by  Bremsen  
#1 · (Edited by Moderator)
Here is a summary of the different models of USD Radial forks used on the various Suzuki models.
Hopefully, this will concentrate all the dimensional information on the most popular SV/GSXR fork conversion possible configurations.

Let's start with the matrices for the dimensions of the various fork models:

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Acknowledgments to Sam over at TL zone for initiating the primary chart creation and to all those who provided the data for it.

This excellent illustration courtesy of jeff721 will help indicate to what the measurements in the chart refer:

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Of course, there are the non-radial USDs used on the 01-03 750 and 01-02 1000 but the Radial versions seem to be the most popular, so that is the focus of this post.

So - looking at the primary area of interest for GSXR Radial Forks:

2003/04 1000
Gold/black inner tubes; gold calipers
300mm rotors.
850 springs
32mm offset; 54mm lower clamp
Right offset ignition top clamp, 28mm bore

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2005/06 1000
Bronze/black inners; black calipers
310mm rotors
950 springs
30mm offset, 54mm lower clamp
Center ignition top clamp, 28mm bore

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2004/05 600/750 (same)
gold/chrome legs, gold calipers
300mm rotors
850 springs
30mm offset, 54mm lower clamp
Right offset ignition top clamp, 25mm bore

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2006+ 600
gold/ chrome leg, black calipers
310mm rotors
900 springs
30mm offset, 53mm lower clamp
Left offset ignition top clamp, 28mm bore

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2006+ 750
black/ bronze leg
310mm rotors
1000 springs
30mm offset, 53mm lower clamp
Left offset ignition top clamp, 28mm bore

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Calipers:

03/04 1000 and 04/05 600/750 (fit 300mm rotors std)

* The 03 1000 calipers are 4 pads per caliper - look the same as the two-pad variant
No interchangeable re pads however

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All other GSXR models

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Yamaha Monoblock (R6)

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Caliper/Rotor Matrix:

Calipers can be utilized from all the models above, by using spacers* per this matrix.
* Note that although for some sizes it says N/A, this means the combo would be too tall;
however, you could actually machine the caliper (or fork leg stanchion) as opposed to a spacer

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Triple Clamps:

You can mix & match a bit here:
The ideal top clamp I believe would be the 04/05 600/750 clamp
This has ignition offset to the right (same as SV and more conducive to the Vee shape of the front of the speedo for naked)
It has a 30mm offset and a 25mm bore.
Direct fit on 04/05 l600/750 lower triple clamp/forks
To fit on 06+ 600/750 forks/lower triple, bore stem hole to 28mm
To fit on 05/06 1000 bottom triple, bore stem to 28mm

If you have no access to machining, then the 05-06 1000 top clamp will fit directly on the 06+ 600/750 steering stem. This clamp has ignition 'straight ahead. The steering lock WILL lock, albeit with the wheel straight ahead, as opposed to the conventional full left position.

06+ 600/750 top clamps obviously 'fit' their own forks/bottom triple, however, the ignition is offset to the left; it requires some machining of the ignition module to avoid interference with the frame on the left side and the steering lock will not function without drilling frame. This makes it a less ideal choice.

Bottom clamp:
03/04 1000 has 32mm offset, 54mm bottom fork dia, and 25mm stem
05/06 1000 has 30mm offset 54mm bottom fork dia and 28mm stem
04/05 600/750 has 30mm offset, 54mm bottom fork dia, and 25mm stem
06+ 600/750 has a 30mm offset, 53mm bottom fork dia, and 28mm stem

Note that 06+600/750 forks are 53mm at the bottom clamp diameter - the others above are 54mm; so consider that as you wish to mix/match bottom triples & forks.

Axles:

The wheels are comparable fitment for all 01+ GSXR;
However, the axles change with the fork generations;

For the first group of forks per the caliper table above (03-04 1000 or 04-05 600/750)
uses an axle & collar nut (same as SV1K actually)
Note that there is no additional wheel/axle spacer required.

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For the second group of forks (05+ 1000 or 06+ 600/750)
the axle has a threaded bolt, rather than a collar nut, with a separate spacer that goes between the wheel & right fork leg.

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Steering Bearings:

All GSXR forks in the range above have 30/55/17 top & bottom bearings.
All Gen 2 SV650 and SV1K are the same sizes also
Gen 1 SV650 is the same bottom bearing but requires a special top bearing from TWF Racing.

Wheels:

All GSXR wheels after SRAD will fit any GSXR forks described above
The rotors change sizes (and fitment) however

Image

Mix n Match Capability for Wheels/Rotors:

01-04 1000 and 01-05 600/750 and SV1K all are the same wheel dimensionally;
Will take 300mm rotors from 03-04 1000, 04-05 600/750;
Will take 310mm rotors from SV1K;
Will take 320mm rotors from any 96-03 600/750 or 01-02 1000 or TL, or Hayabusa

05-08 1000 and 06-07 600/750 take 310mm rotors only, from these years of the wheel only.

09+ 1000 and 08+ 600/750 take 310mm rotors only - note that these rotors are NOT compatible with the group immediately above & vice versa.
 
#593 ·
thanks guys, so know if I understand this right I need specificly an 03 gsxr 750 axle, then any upper and lower triple that are the right diameter (making sure to match their offset too) a wheel feom a 2001 or newer gsxr, and brakes still from a number of sources but should probably get my triples first before planning the brakes
 
#602 ·
You should get the proper spacer unless you have someone who can make one for you to OEM spec - it fits in the grease seal on the right side, so the OD is just as important as the length that determines the spacing. Also, that spacer is what determines your wheel center, so should be correct dimensionally.
 
#607 ·
So I'm replacing my bent forks on my naked 2002 with a GSXR front end. I'm looking at some 2009 GSXR 750 forks. But most of the charts don't go to this year, so I'm slightly confused (or maybe it's because my head bounced off the guardrail :) ). Does anyone know what wheels fit these forks? Just about any correct? It's just the rotors have different bolts (5 vs 6) between the 08-10 wheels, and the earlier ones, right? What about newer wheels, say 11-12?
 
#609 ·
Another question. On my current naked SV front-end I have Galfer stainless lines. Can I reuse these with the 09 GSXR 750 M/C and brakes? I'm keeping the handlebars. I'm concerned because the SV master banjo exits to the side and the GSXR banjo exits down. Will the naked lines have enough length to make the turn, or do I need lines with a 90 fitting on the master end?
 
#610 ·
:) I am just wrapping up installing the complete 2006 GSXR 600 Front End on my Gen 1 SV650 bike,

What is the best looking and most discreet way for aesthetics and funtion of Installing Steering Stops with this combination of Frame and 2006 GSXR Front End?

Any photos that can be posted up showing your solution would be great,

Thanks and best regards,
Blair
 
#611 ·
Excuse my as-yet unfamiliarity with some subtleties of the SV configurations

Can you show me a picture of current stop(s) on the frame?
Is it a single stop at 12 o'clock or twin stops at an angle on the head?

Refer to the link in my post above for my Triumph Daytona - if twin fixed stops on the frame , a similar design is possible.

Image



If it's a single fixed stop on the frame at 12 o'clock, the design is quite similar but instead of the bolt-on bump stop operating on the outside facets of the block , visualize it would have an included angle with a slot where it would contact the block at extremes of travel on the now inside facets.

Hope that makes sense?
Page 14 of the other front end thread
 
#614 ·
No. 06 600/750 are left mounted, which lets you lock the steering with the wheel dead ahead on a 1st gen. 1000 is center mounted, which gives you a conventional steering lock.
 
#616 ·
Just to confirm...

I have an 01 GSXR front end on my SV650 trackbike. Will any year & model GSXR front wheels work?

I just use my axle from the 2001 GSXR-1000 forks right AND use the 320mm rotors?

From first post:
Axles:
The wheels are comparable fitment for all 01+ GSXR;
however the axles change with the fork generations;

Mix n Match Capability for Wheels/Rotors:
01-04 1000 and 01-05 600/750 and SV1K all are same wheel dimensionally;
Will take 300mm rotors from 03-04 1000, 04-05 600/750;
Will take 310mm rotors from SV1K;
Will take 320mm rotors from any 96-03 600/750 or 01-02 1000 or TL, or Hayabusa
 
#624 ·
Ok so I have an 01 GSXR-1000 wheel and front end. I am going to 06 GSXR-1000 forks.

I got a new axle to match the forks. I know that will work with the wheel.

I got an 08 R6 master cylinder + a set of 04-06 R1 calipers that I'll be using. Same as 06+ R6. Zoran at TWF is making me a set of spacers for the calipers to run the 320mm discs on the 01 wheel.

My question is what size and length bolts do I need to get to mount the calipers. Does anyone know if M10 x 1.25 x 80 are correct?