ZXR 250 rear shock into a KR1s?

[dmac]

Hi everyone,

I had a quick search and couldn't find anything,

so time to ask the experts

I can pick up a NOS hagon rear shock, for a ZXR 250, for about 70 Euro.

So I was wondering, would you lads know if it would be suitable ?

I will bring my knackered kr1s one with me to compare next week, if there are no obvious hiccups

[dmac]

OK, I may be talking to myself here

But the short answer is maybe.

It looks like a good match, but it is approx 20 mm too long.

I think I might be able to fix that though, and it was a super bargain so I bought it.

I will get a few pics to show the differences and get opinions on my planned modification.

[Howie]

I was looking on Hagon's site for shocks for my Ke175 & just happened to note their part nos for kr1/1s shocks, so I just had a look for Zxr250 shocks & the part nos are different.

However if you can get the Zxr shock to fit ok dmac, then with the extra length would this be the ideal replacement for those who use a 17" rear wheel?

Especially as Hagon do not list a Kr1/1s shock with remote reservoir

[dmac]

Good point Howie, I never thought about the 17 inch wheel option.

The hagon is a standard mono shock - no fancy remote resivor, but it looks fairy good. Has a much thicker damper rod and has adjustable damping. It may be just rebound though.

The top eye and bottom fork are identical to the KR1s.

I measured up, standard KR1s seems to be 265mm ish eye to eye (centers)

The hagon ZXR 250 shock is 290 mm ish eye to eye (centers) so 25mm longer.




Now what I was planning to do was to drill new mounting holes in the same position as the standard KR1s shock.
There is plenty space between the original holes and planned new hole -- 8mm.


I may have to shim the bush in the linkage (as per rear engine mount) as It is getting closer to the welds on the hagon and I do not want to stress them.

Anyone see any banana skins

[dmac]

Just remembered Howie,

for twin shocks, check out http://www.njbshocks.co.uk/


I got a pair for about £80 about five years ago for my DT 360.

They seem grand for the price

[ScottaKR]

Cant see any obvious bannana skins from here dermot. Looks like it could be a better option than the R6 rear shock that many of us have used as with this theres no need to mod the airbox for clearance, and the spring and damping rates should be pretty close too.
Nice find. =D>

[dmac]

Thanks for the comments Scott,

It was just the price that got me interested.

There is a small bike shop about 20 miles away, run by a guy that must be in his 80's.

He only opens up on Friday afternoon and Saturday - It's just his hobby now, selling off years worth of old spares.

He threw in a nice all black chrome petrol cap free too, top fella.

[JanBros]

Cant see any obvious bannana skins from here dermot. Looks like it could be a better option than the R6 rear shock that many of us have used as with this theres no need to mod the airbox for clearance, and the spring and damping rates should be pretty close too.
Nice find. =D>

I don't see the point of switching to this one, as it will be no better that a KR1 shock : you still have one from the same period, compared to the R6, you have a modern, much better one.

unless you want a longer one to compensate for the 17" wheel. but still I would go for a more recent shock.

[Rocket]

290mm is length I run with 17" rears

[ScottaKR]

Cant see any obvious bannana skins from here dermot. Looks like it could be a better option than the R6 rear shock that many of us have used as with this theres no need to mod the airbox for clearance, and the spring and damping rates should be pretty close too.
Nice find. =D>

I don't see the point of switching to this one, as it will be no better that a KR1 shock : you still have one from the same period, compared to the R6, you have a modern, much better one.

unless you want a longer one to compensate for the 17" wheel. but still I would go for a more recent shock.

I look at it this way. For those that have a completely knackered stock rear shock and are on a tight budget, this is a far easier option to fit than the R6 shock. Especially if they don't care for haveing the extra damping adjustments. And since there isn't a lot of support for aftermarket shocks for the KR, this gives people another avenue to go through.

[Howie]

Just remembered Howie,

for twin shocks, check out http://www.njbshocks.co.uk/

Cheers Dermot, I'll give them a call when I have made progress with my Ke175 (its only been four years since I bought the bike as a project....................ho hum )

If you have a look on Hagons site, they list the standard shock (pt nos-M64020) & one complete with remote reservoir (pt nos-M64020H)

I think I may just start saving my pennies for the latter, to fit to my Kr1s project, do you know what, I really wish I had money so I didn't have to buy the majority of my bikes as projects , still, gives me something to do I suppose

And the good thing is, both these shocks are rebuildable

[dmac]

I hear you there Howie,

But at least we know when we do a project bike, that the bikes are good from top to bottom, which I suppose is educational

Keeps us out of the pub anyway

[Howie]

Keeps us out of the pub anyway

Yeah true, I suppose ....................oh well, given the choice

I could always leave me bike with my brother in law while me & him pop down the pub

Thats the trouble with living out in the sticks, nearest bloody pub is 3 mile away

[scottricho]

would it hurt to compress the shock a little and fit it without drilling the new holes?

[Luders]

Yes, you would have zero static sag.

Have a read here, it will help you understand what suspension does and how it works most effectively when correctly setup.
http://www.gostar-racing.com/informatio ... set-up.htm