I need a new shock. Which ones are likely to fit?

Robby · Dirty Old Man Joined: 16 May 2002 Karma :

My GPX750R is in dire need of a new rear shock.

Now a new hagon costs about as much as the bike is worth, and seeing as they only made the bike for 3 years there aren't a lot of decent used ones around.

So does anyone know if a shock from another bike will fit and do the job? I was thinking of something like a hagon shock for a zzr600, a few of those pop up on ebay.

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

Suspect a ZXR750 one would be a closer match, but think you will struggle.

I can measure up a ZZR600 E model one if you want.

Has the shock lost all damping? Can it be rebuilt. Or has someone blown the air preload through the roof using a garage air line.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

Klause · World Chat Champion Joined: 25 Apr 2004 Karma :

Like Keith says, trying finding a local suspension specialist and get a quote first.
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Current bikes: 1960 Triumph 5ta x2, TTR600RE, KTM200EXC, Cagiva Elephant 900ie.

Robby · Dirty Old Man Joined: 16 May 2002 Karma :

The shock is 75000 miles old, and hasn't been cared for too well. Last time I touched it the big sticker came away in my hand, with a large amount of mushy rust stuck to the back of it.

It has some damping left, but very little. I can push the back end of the bike down 2 or 3 inches by hand and hold it there, when I let the pressure off it rises slowly.

I may just get a used shock off of LM spares, they offer a guarantee if its knackered.

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Robby · Dirty Old Man Joined: 16 May 2002 Karma :

Ah yes, its not holding any air pressure either, and seems to hiss a bit when I bounce the back.

However, your hunch of a ZXR750 rear shock is looking tempting. More or less consecutive part numbers from most of the aftermarket, and the linkage looks identical.

I think one can be persuaded to fit.

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

As they use air as a major part of the springing, sounds like your is well and truely shot.

The ZXR750 was originally derived from the GPX750 (engine is very similar, except for the head). Not sure how many other bits are close enough to swap over.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

veeeffarr · Super Spammer Joined: 22 Jul 2004 Karma :

Have heard Hagon are utter dump

Can you get a new OE one?

Robby · Dirty Old Man Joined: 16 May 2002 Karma :

New OE?

Are you quite insane?

I'm going to get a ZXR750 shock with its linkage off of ebay. Lots of bits to persuade it all together there.

Then if the shock gives up on me, lots of ZXR750 shocks on ebay.

Might get rid of the feeling of impending death at above the ton now.

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Robby · Dirty Old Man Joined: 16 May 2002 Karma :

I know, I'm trying to reduce the death feeling. I have an old kawasaki steering damper at my parents' house that will be fitted when I remember to grab it.