Yamaha TRX850 Enthusiasts Forum

Found this compiled list of shocks with the length and stroke from another forum so figured it may be handy for those who may choose to go down this route...
If you have any others you want to add, just copy the list and add any further info to keep the list complete and up to date.


This chart is a useful starting point for anyone wanting to replace the standard shock in their bike. You will obviously need to match up length and stroke of your bikes shock as closely s possible - be careful though, this chart does not cover top and bottom shock mount types, reservoir type and position, spring rates or internal valving.



Make Model Year Shock Length
(mm) Shock Stroke
(mm)
Suzuki Bandit 600 2000-2004 319 55
Suzuki Bandit 650 2005 319.5 65.5
Suzuki Bandit 1200 1996-2000 306 64
Suzuki Bandit 1200 2001-2005 320 (+6/-0) 61
Suzuki GSXR 600 1992-1993 312 (+12/-0) 67
Suzuki GSXR 600 2001-2003 325.5 (+6/-0) 74
Suzuki GSXR 600 2004-2005 332.5 (+6/-0) 74
Suzuki GSXR 750 1985-1987 290.5 61
Suzuki GSXR 750 1988-1991 312 (+12/-0) 67
Suzuki GSXR 750 1992-1995 312 (+12/-0) 67
Suzuki GSXR 750 1996-1999 356 (+6/-6) 79
Suzuki GSXR 750 2000-2003 325 (+6/-0) 74
Suzuki GSXR 750 2004-2005 332.5 (+6/-0) 74
Suzuki GSXR 1000 2001-2002 329.5 (+5.5/-0.5) 74
Suzuki GSXR 1000 2003-2004 332.5 (+6/-0) 74
Suzuki GSXR 1000 2005 319 70
Suzuki GSXR 1100 1986-1988 315 69
Suzuki GSXR 1100 1989-1992 312 70
Suzuki GSXR 1100 1993-1998 312 70
Suzuki Hayabusa 1999-2006 330 72
Kawasaki ZX6R 2003-2004 340 (+12/-0) 72.5
Kawasaki ZX6RR 2003-2004 340 (+12/-0) 72.5
Kawasaki ZX6R 2005 335.5 (+12/-0) 64.5
Kawasaki ZX6RR 2005-2006 330 (+12/=0) 63.5
Kawasaki ZX7R 1996-2001 350 (+12/-0) 75
Kawasaki ZX9R 1994-1997 348 79
Kawasaki ZX9R 1998-1999 330 (+12/-0) 69
Kawasaki ZX9R 2000-2001 338 67
Kawasaki ZX9R 2002-2003 338.5 67.5
Kawasaki ZX10 1988-1989 314.5 67
Kawasaki ZX10R 2004-2005 338 (+7/-5) 69
Kawasaki ZX12R 2000-2005 338 (+7/-5) 67
H*nda CBR 600 F 1987-1990 292 50
H*nda CBR 600 RR 2003-2006 313 (+0/-6) 59.5
H*nda VFR 800 FI 1998-2001 325 58
H*nda VFR 800 FI 2002-2005 317.5 53.5
H*nda CBR 900 RR 1992-1995 319 (+12/-0) 54
H*nda CBR 900 RR 1996-1997 305 (+12/-0) 60
H*nda CBR 900 RR 1998-1999 303 (+12/-0) 57
H*nda CBR 900 RR 2000-2001 286 (+4/-2) 57
H*nda CBR 900 RR 2002-2003 288 (+2/-4) 57
H*nda CBR 929 2000-2001 286 (+4/-2) 57
H*nda CBR 954 2002-2003 288 (+2/-4) 57
H*nda RC51 2000-2005 326 (+10/-2) 63
H*nda CBR 1000 RR 2004-2006 314 (+6/-0) 58
H*nda VTR 1000 F 1997-2005 346 60
H*nda VTR 1000 SP1 2000-2001 326 (+10/-2) 63
H*nda VTR 1000 SP2 2002-2005 326 (+10/-2) 63
H*nda CBR 1100 XX 1997-2005 319 52
Yamaha YZF 600 1994-1999 360 (+12/-0) 70
Yamaha YZF R6 1999-2002 305 (+4/-2) 62
Yamaha YZF R6 2003-2004 295 (+5.5/-0.5) 62.5
Yamaha YZF R6 2005 300 (+0/-6) 62.5
Yamaha FZR 750 1987-1988 300.5 54
Yamaha FZR 750R 0W01 1989-1991 360 76
Yamaha FZR 1000 1987-1988 300.5 54
Yamaha FZR 1000 1989-1995 340 70
Yamaha YZF 1000 1996-2000 340 (+12/-0) 69
Yamaha YZF R1 1998-2001 300 (+11/-1) 65
Yamaha YZF R1 2002-2006 300 (+5.5/-0.5) 64.5
Yamaha TRX850 1996-2000 345 62

I added in a bit that you might want to know

So later model GSXR 750 shocks are a potential option then

such as

http://www.ebay.com.au/itm/SUZUKI-GSXR- ... 35ea81d91d

the Penske I have in mine was foremerly in a 2005 GSXR 750

What an awesome piece of info, cheers Cobba

You may be able to make up a small adaptor for the top of the shock much like Kayla does for the bottom of the R6 shock.
Next issue is the stroke is 1/6 longer than the std Trx shock so it's damping and spring rate would be very soft.
Length of swing arm and rising rate suspension ratios comes into play too.

So fork out all the money for the shock, rebuilt damping curve and sprung to suit and manufacture an adaptor.
You can buy a decent aftermarket shock new to suit a Trx.

The reason Kayla chose the R6 shock to place her adaptor on was because the stroke was within 1mm of the std Trx.
But the R6 has only 120mm travel not 130mm, a longer swing arm and different rising rate ratio relay arm/linkage set up so you need to tweak the damping curve to suit the Trx.
This also is the reason why the spring rate is stiffer on the r6 shock when used on a Trx.

A 0.9 rear spring on a gsxr750 is the same as a 0.9 spring for a Trx but because of all the leverage factors determined by the shocks stroke, swing arm length and rising rate ratio it may suit a different weight rider.
So a std 0.9 spring rate on 1 shock to suit 1 bike and rider weight and that does not make that a generic 0.9 spring to suit any bike/rider weight like a front spring.

EXAMPLE..
The calculated 0.98 spring fitted on an r6 shock may suit a 70kg rider but suit a 80kg rider if the same shock is just unbolted and used on a Trx.

It's a bit like setting a torque wrench to 45 NM.
Grab the handle in the correct position and tighten until ....CLICK...
You have 45NM
but grab the torque wrench and tighten the same nut with your hand further down the handle closer to the nut, the spring hasn't changed still set a 45NM but the leverage factor has and you will under tighten the nut of the 45NM setting when it clicks at 45.

Leverage ratio in a nutshell: the nerd in me made me do it


Give me a lever long enough and a fulcrum on which to place it, and I shall move the world.

Archimedes

I heard invented the Screw as well for which we are all eternally grateful

getting your spring right is just a case of loaded and unloaded sag measurements though,

with the wrong spring you wont be able to get the correct measurement for both.

the shock on mine has been re sprung though...

as an aside, anyone got any suggestions for a place that will rebuild a penske shock?

They should be able to address the longer stroke when rebuilding and revalve to suit.
There must be a Penske dealer somewhere.
Isn't Marcus Ambrose sponsored by them this year in the V8 supercars???

It's a bit like setting a torque wrench to 45 NM.
Grab the handle in the correct position and tighten until ....CLICK...
You have 45NM
but grab the torque wrench and tighten the same nut with your hand further down the handle closer to the nut, the spring hasn't changed still set a 45NM but the leverage factor has and you will over tighten the nut in excess of the 45NM setting when it clicks at 45.

Am I misunderstanding what your saying or is this some new type of physics from a parallel universe.

Parallel universe after 2 endones..
My mistake you would under tighten the nut.
Less leverage more torque is needed.

Wrong again. You are confusing torque and force. You will still get 45nm of torque, but you will have to apply a greater force to the torque wrench to get it.

Ok I see my mistake now.. Thanks for clarifying that Lenny.
So what am I missing here...
I was taught to always torque the nut with my hand correctly placed on the handle to get an accurate reading than If I pull from a little further down the handle ????
Have I been spun a porky on this ????

yes, a porky Brian.
If you have your hand down further on the shaft of the tourque wrench, you will have to excerpt more of YOUR energy to achieve the CLICK.
Not the wrench.
we all live and learn, you arnt alone !