Swinging arm identification

Can any one help ID this swinging arm on a 550 seca on UK ebay - looks interesting..


I quizzed the seller but he didn't know.

 

Hmm... Aluminum?
Eccentric chain adjuster.
Twin shock.
Hmm....
Could be aftermarket. There was at least one supplier of an alloy swingarm for the 55o, but I don't recall it having eccentric chain adjusters.
Hmmm...

 

Tricky eh? I was thinking an adapted off-roader but it has the 'under-arm' stiffener which I don't think trail bikes would have. As you say the twin-shock bit looks original and not a modified mono- Brake rod has been bodged a bit and now passes over the top. Whoever did this spent good money on the Marzocchi shocks too. Those parts will have cost way over the 250 GBP (current bid) price on their own. Tempted, very tempted - if only I had somewhere to hide it.

 

Maybe from here.. http://metmachex.net/swingarms/

 

What can people tell me about that shift linkage? I've seen something like that on other bikes. It doesn't look like it is moving the shifter back as much as providing mechanical advantage?

 

Looks like the standard set-up to me - just missing the rubber grip. Are US bikes different?

 

Mine looks like this one. just a lever on the shaft.

 

Adjusters look very Kawasaki zx 10

 

Looks like another transatlantic mix-up. As well as the 'rear-set style' lever & linkage I notice that actually the Euro foot-rest is set further back. This is very common on the Yams I've seen..
so you don't have the front pivot shaft on the sprocket cover either then?

 

No pivots. i always thought that was a custom job when i seen them before with the pegs just flip floped from opposite sides. Gotta wonder what the logic was?

 

Bet it's the same as the 'cruiser' Maxim set-up I expect saves money.. along with the single disc and no oil cooler. Still you got the side-stand safety switch..

 

The amazing thing is that it still has the right side cover!

 

That would be my pick, I looked at getting one done several years ago but it was double to cost of the bike

Marzocchi shocks while a nice period item, in my experience having had them on two different bikes are crap

 

Especially compared to modern shocks (double especially if they haven't been rebuilt).
They are a good step up from the stockers though; if you're into that sort of thing.

 

Yes why is that? Luckily though I now have two RH panels..

 

Here in North America they are as rare as hen's teeth.

 

If I buy it I'll save you that panel.. Just wondering if I can get it home strip off the bits I want,replace with an old swing arm I've got and move it on before the wife finds out..
It's only about 60 miles from here..

 

Thanks for the offer on the right side cover. I got four already. I have seen them sell on e-bay for $400.

 

Not OE but I've got a carbon fibre set out in the shed

 

That's why they're in short supply - we're all hoarding them !

 

we also have a black plastic chain guard instead of chrome metal one.
also we have stright spoke wheels instead of the swirl rims.

what a trade off for the Seca label

 

One way to try to find those valuable parts is to look for people parting out a bike. Often, wreckers or people who stumble upon old xjs don't know the rarity of the plastics. I got a seat and a RH side cover for mine for less than a hundred, and that's in Canadian pesos!

 

I'm not.... I wouldn't hoard A-N-Y-t-h-i-n-g............

 

Dave is being honest here, he doesn't hoard anything, he hoards EVERYTHING!

 

Tooanybikes was close with his guess!
Its off of a 1991 Kawasaki Zephyr ZR 550.
Its a common swap accross the pond to swap them on XJ400/550 Seca models. Its pretty much a bolt on modification if you can find one. Weird chain adjustment thingy......

 

I can't agree - it's a different shape and the one in the original pic has a bracing under-arm I think. As for common swap I never heard of it before - only the radian swap - might try and buy one now though!

 

Sorry, I had "550" on my mind. They actually are off of the ZR 750-1100 Zephyrs and also the ZRX model Kawasaki bikes. They are generally sent in to fabrication shops for the additional under bracing to shops that offer that as a service. Some aftermarket swingarms are also offered from other vendors for ungodly prices starting at $500 and up from there.

 

Heres one on a ZRX 1200

 

(institute of advanced motorists) stickers on the side panels, don't reflect the condition of the bike
and , are those shocks on upsidedown?
stu

oh, I mean the original pics.