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Discussion Starter #1
Hi all. As mentioned in an earlier post I said I had ordered some YSS shocks. Arrived today, exactly a week earlier than expected, and on inspection they certainly look well engineered. I fitted them in 10 minutes and rode about 10 miles along the route I take to work every morning, so I know the bumps and undulating bits.
It's a different animal!!!! I left spring pre-load in "as delivered" position and the suspension is firm but the biggest difference is the complete disappearence of the pogo stick effect and much straighter tracking over bumps, due to the quite firm damping on the units. You still feel the bumps but the bike is much more stable. On the main road, recently re- surfaced, it was so much more "planted"

Now the downside. Spring pre-load is adjusted at the TOP of the unit, which looks possible but fiddly as it's up under the mudguard(haven't tried yet) and it's of the threaded ring type, so a quick tweak before a Sunday afternoon trip with SWMBO might be difficult. Updates will follow on this.

The units cost me £160 delivered from Italy. Notwithstanding the awkward adjust ment proceedure am I happy with them?
Absolutely yes, there is feedback where there was none before, it's more comfortable and it's easier in the corners. They do show up the forks so that's the next job.

Cheers all, Jon Robinson
 

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Never heard of them but would be interesting to learn more and availability in USA but that adjustment location doesn't sound very good.
 

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Most shocks have the pre load spring adjustment on the top, it's just the nature of the beast.
Stock shocks and the aftermarket Progressive brand shocks for the 650 have the preload adjustment on the bottom. The Progressives look MUCH better made IMHO.



Progressive Shocks a.png <<<< Click to see bigger
 

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My Ikon rear's have the pre-load adjuster at the bottom but the damping adjuster is at the top you need to remove them to reset :-(

Greg
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I guess I'm just use to dirt bikes, 4-wheelers and snowmobiles, where most have the adjustment on top.
So, does this company offer anything for the 400 ?
 

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Discussion Starter #8
Hi Mike. YSS do shocks for the 400. In the States the dealer/importer is USA Racing
Suspension.

I like mine, I softened the spring setting yesterday by about 5mm and the ride is excellent apart from very rough roads, and they are very well made so should last a while.
Cheers Jon R
 

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I just looked at their website, you have to dig a bit, but it appears they have a lot of different shocks available in a ton of lengths and options.
Very interesting.
Thanks for the post.
 

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Do you have model number? Maybe the spring weight? I just put on some progressives last night and my initial (read short) ride did not make me smile.
 

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Discussion Starter #12
Hi Speed trap. If your machine is a 650, they list a spring adjustable only set or a spring and damping adjustment set specifically for the 650. The US importer is USA Racing Suspension
Cheers Jon R
 

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The damping adjust is the most useful feature :)

Greg
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Discussion Starter #15
Hi all. An update on my post on YSS shocks fitted to my 650.
Today I took SHMBO on a trip to see Hadrian''s Wall in Northumberland. This is the first time I've been out on the scooter with pillion since I fitted the new shocks and I was so pleased with their performance. The trip involved road surfaces varying from first class to absolutely dire.
Cruising on the A69 at indicated 70, absolutely planted, uneven B roads still good at 60, crappy C road into Haydon Bridge meant restricting speed to 45 so as to dodge pot holes.
Granted my original shocks were worn out, but these shocks I would bet give a far better ride than the factory fitments.
Cheers Jon Robinson
 

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On a scale of 1-5 with 1 being Rubbish and 5 is STELLAR, I'd rate the OEM's on all 4 of my 650s a 2.5 and the Progressive spring and shock combo a 4.
 

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Could you try to describe it better?
I purchased the Progressive 12-1205b (from memory, that should be the number) along with the lightest springs I saw discussed here, 65/100. Others had the heavier springs and thought the ride was stiff but controlled. I think it was Dave J who said the stock springs were 60/90 so I thought the 65/100 should be perfect.

The ride is stiffer than I like. To be fair, I probably like a little more plush than I do a sport bike feel. I don't hate the stock shocks but I know they aren't that great either. I actually think the spring rate is pretty close and I would be reasonably happy if they just had some rebound damping which they don't. I assume the damping on the Progressive shock has both compression and rebound damping to some degree. They are controlled on rebound but the compression side of things makes it stiffer than I like.

This is why I was asking about the YSS shocks. I am looking for an affordable upgrade in my ride without spending a fortune on something that will never be great (I'm okay with that btw, I know its a scooter). It gets expensive buying and selling items that don't meet your needs. I get a little scared when I buy a shock without any adjustment other than preload. Others have had good success but this time it didn't work out for me.

Thinking about the Ikon which is almost $500 by the time it gets to my door.
 

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I purchased the Progressive 12-1205b (from memory, that should be the number) along with the lightest springs I saw discussed here, 65/100. Others had the heavier springs and thought the ride was stiff but controlled. I think it was Dave J who said the stock springs were 60/90 so I thought the 65/100 should be perfect.

The ride is stiffer than I like. To be fair, I probably like a little more plush than I do a sport bike feel. I don't hate the stock shocks but I know they aren't that great either. I actually think the spring rate is pretty close and I would be reasonably happy if they just had some rebound damping which they don't. I assume the damping on the Progressive shock has both compression and rebound damping to some degree. They are controlled on rebound but the compression side of things makes it stiffer than I like.

This is why I was asking about the YSS shocks. I am looking for an affordable upgrade in my ride without spending a fortune on something that will never be great (I'm okay with that btw, I know its a scooter). It gets expensive buying and selling items that don't meet your needs. I get a little scared when I buy a shock without any adjustment other than preload. Others have had good success but this time it didn't work out for me.

Thinking about the Ikon which is almost $500 by the time it gets to my door.

You can always sell the slightly used set at a loss on here. Someone will like them. Like I said above, my Progressives are better that stock but I still know there must be a 5 star shock/spring combo out there.
List them in the classifieds for sell with the comment they will not come off till the new shock comes in. I may pick them up for my Trike project.
 

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Discussion Starter #19 (Edited)
Hi Eric. I'm sorry I can't give you technical info on spring rates etc, as the shocks were advertised specifically for a B650 I didn't enquire, risky I know!!!. However, I can give you a little more feedback from riding 500 miles on them.
I suspect the springs are a little stiffer than the standard springs, as riding solo I find the ride best with the adjusters backed right off. I am a small guy at 180lbs wet through, and on the aforementioned settings I suspect the shocks are a tad over damped so the ride is very firm over very bumpy tarmac, but generally excellent, bearing in mind the smaller wheel. My wife weighs in at 100lbs and last Sunday I wound the spring's up 6 turns, which is 6mm of preload. This was fine for the pair of us, no bottoming out and a firm to plush ride on a wide variety of surfaces, I was very happy with it.
I checked the suspension sag at 10mm spring preload and rolling the machine off its stand the suspension is at its highest point, only settling slightly when my wife sat on the seat. I am sure the suspension would cope with a far heavier load than the 2 of us, which is fine by me as there will be a stack of extra baggage when we set off for Naples in August.
Hope this helps a bit.

Regards Jon Robinson
 

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Discussion Starter #20
As a PS, I do think the shocks are slightly over damped, but it only shows on really rough roads and going over badly done road reinstatements. On smoother A roads it now floats along, any undulations are damped out immediately
 
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