YSS JAPAN Motorcycle Reviews

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YSS

26 Apr 2024

Fork Upgrade Kit

Fits: SUZUKI GSX-R150

Japanese Webike user

5/5

Front and Quantity:Set

[How is it used?
GSX-S 125 2023 (DL32D), Rear is also converted to YSS at the same time.
The use of the vehicle is Light, including commuting, city driving, and day-touring.

Was the one you received as per Image?
YSSQuality as usual. No problems.

Was the installation difficult?
I asked the Shop to do this for me. The FFork oil that came with the kit seemed to have a very hard number in it. （The FFork oil included in the package seemed to be a very hard number, but it was less than one bottle, so it was supposed to be mixed with others.)

How was your experience with it?
The viscosity of the supplied FFork oil seems to be very hard. I was wondering what to do after reading other reviews, but I decided to give it a try and used a mixture of the supplied oil and OEM FFork oil.
As a result, I could feel that the system was working properly after the conversion, although I could not feel it working well in NORMAL mode for my above application.
However, the oil is definitely hard, and it does not seem to be soft or move well. On public roads, there may not be a situation in which the oil is at the full bottom.

[Included Parts:were they on?
Instruction manual, FFork oil (I forgot the volume, but not the full amount)

[Was there anything that disappointed you?
Nothing in particular. It has an adjustment mechanism, which I would like to try out in the future.
I have changed to YSS both front and rear and now have a normal suspension, which I think is safer, more comfortable and more pleasant to drive than NORMAL, including the behavior when stepping on the Gap and the overall ride quality. View detail

MONO LINE Rear Single Shock [MZ Series] MZ366

YSS

15 Apr 2024

MONO LINE Rear Single Shock [MZ Series] MZ366

Fits: YAMAHA TW225E

Japanese Webike user

3/5

Large things are not explained! It is much shorter than OEM!

Caution before performance crap! This suspension. It's short. (Angry)
It is listed as TW200/225 compatible, and since there is no explanation, I thought it would be the same size, but it is much shorter than the OEM suspension.
If it wasn't the same size, I would have hoped there would have been an explanation. If I had known it was short, I would never have purchased it!

Seeing things, Once I don't have a ShacoTan in my off car. I paid high gold to buy Garbage. I was disappointed.
I doubt the designer's Sense, even if it's the old fashioned Ska tune type Custom. no Sense!

However, I paid a good amount of gold for it, and since it has been sitting for about six months after purchase, I would not be able to return it......so I am in an atrocious mood,
Since it has a coilover function, I extended it to the limit and installed it. Still, it is a little shorter than OEM. Too bad.
Comparing the appearance before installation, the damper section looks thinner and poorer than the OEM.
Pre-road is installed as shipped. Attenuation is at its lowest.
The front side is equipped with a Cartridge emulator and pre-road is also applied.

When installed, the suspension itself is shorter, but the spring rate is higher from the beginning and the sag is reduced, so the Rear ride height is higher at 1G's ride. (The optical axis is lowered.)
This is not the kind of thing I wanted, but I feel ・・・・ indescribable・・・・
Normally I wouldn't want to give it even 1 star, but after riding it... not bad ・・・・
Things are not bad.
It's very well controlled and of high quality. It is clearly different.
Completely stiffer for on road use. The front end tends to cut into the road as the vehicle's ass rises higher than the OEM during cruising.
It picks up fine Gap and has a lumpy feel. However, when stepping on the Gap or swell while turning, it becomes a crisp and snappy leg without wobbling. It is honestly easy to ride.
I think this will increase the risk of cocking up when going off-road, and I don't think it will be a comfortable ride...
It is intended for long-distance travel with luggage, so maybe a harder taste that is not as heavy is not a bad thing...
Supple in the beginning, stiff in the back. Stroke is up if you want....

I didn't get what I wanted due to the lack of explanation, but things are good from a different perspective and well, this is what I got.... It was the Rear Suspension that made me feel indescribable.
I don't like even 1 star if it's just for the emotion. But considering the performance of the product, it's not bad at all, in fact, it's rather admirable. I rated it as 3 Stars because of this.
It is very good for on road driving....
Whatever the case may be, I would have liked to have seen a better description of the product.

This would be good for those who are customizing for on road or want to lower the ride height.
The stiffer design may be suitable for heavier people or those who carry a lot of luggage.

Sorry for the poem. View detail

YSS

14 Apr 2024

MONO LINE Rear Single Shock [MZ Series] MZ366

Fits: SUZUKI GSX-R 125, SUZUKI GSX-R 150

Japanese Webike user

5/5

GSX-S (R) The 125 can really come into its own & Comfort is also increased.

[How is it used?
Normal shock is not affected by my pre-road ^^^; I still had to buy a new one even though the price went up due to the recent depreciation of the yen.

Was the one you received as per Image?
YSS is the third one including other cars? It's Quality with no problems.

Was the installation difficult?
It was installed inexpensively by Shop at the time of delivery. Thank you very much.

How was your experience with it?
It is normal. The suspension does its job normally and allows you to ride comfortably and according to your will in all situations. It also complements the shortcomings of PonhangSeat to a great extent.

[Included Parts:were they on?
It may have had a stick for adjusting the Initial (I vaguely remember). (I vaguely remember.) However, as you can see in the picture, it is quite tight, so I don't know if it would be useful.

[Was there anything that disappointed you?
Nothing special in terms of performance. I have not looked at the damping, but it looks like it is too large. I haven't looked at the damping, but it seems to be as large as it is... It would be nice to have a separate adjustable damping for the advanced VERSION.

GSX-S (R) The Shock is hard (both front and back). It is more expensive, but it will be normal just by changing to this one (or another Replace product). If you ride for a long time, I would recommend it. View detail

YSS

17 Mar 2024

MONO LINE Rear Single Shock [MZ Series] MZ366

Fits: BMW R80 RT MONOLEVER , BMW R80 RT2 MONOLEVER , BMW R100 CLASSIC, BMW R100 RS, BMW R100 RT, BMW R65 RT

Japanese Webike user

4/5

I think the cospa is very high.

1988 R-100 RS Installed at the shop. The product is highly precise and does not require any special modification, and the adjustment of pre-road and dumping amount is smooth. Therefore, it is not possible to turn the dial to the weakest point of the adjustment range while it is still attached to the vehicle body. In reality, we could obtain a suitable point without loosening the dial to the stage where it violates the sub-frame. (Maybe?) So, I thought it might be a good idea. The original OEM Damper had deteriorated to a large size, so the straightness of the car improved to a large size even in the condition of the torsion. The ride quality is very comfortable once the appropriate adjustment point is found. The durability is unknown because of the short period of use. I can't compare it with expensive products of other manufacturers, but I think it is a very satisfactory product considering the price, at least in normal use. View detail

MONO LINE Rear Single Shock [MZ Series] MZ456

YSS

12 Feb 2024

Front Fork Spring

Fits: YAMAHA YZF-R1, SUZUKI GSX-R1000, KAWASAKI ZX-10R, HONDA CBR900RR, HONDA CBR1000RR

Japanese Webike user

3/5

Four months for delivery.... The product is good!

Not conformity But I was able to use it for MVAGUSTAF3.

The front and rear suspension on the MVAGUSTAF3 is too hard. It is also played by the Gap in the city, and also gets pushed up on the highway.
I lowered the Initial and oil level on the Front, but it is still too hard to use the Stroke effectively.
I looked for a soft spring, but could not find one for F3, so I looked on the web and purchased this YSS with a similar spring diameter from Webike. However, the delivery time was long - it took 4 months from order to arrival.

YSSFront fork spring
[Outer Diameter ] 38.0mm
[Free Length 230mm
Spring rate 8.5N/mm
[Corresponding Model Type] CBR900RRFire blade、CBR1000RR、ZX-10R、GSX-R1000、YZF-R1

Compared to the OEM front spring, the free length is 10mm shorter, but the Initial Adjuster can be adjusted from 0 to 13mm to produce a proper 1G sag.
When I actually rode the car, it changed to a front suspension that normally works properly.

The Rear also can be changed to Spring by Hyper pro to create a standard Japanese suspension that can be enjoyed by Japanese people.
For F3, we recommend replacing the front and rear Springs. View detail

Spring for Monoshock Free length/150mm/Spring inner diameter/56mm

YSS

19 Jan 2024

MONO LINE Rear Single Shock [MZ Series] MZ456

Fits: HONDA CB650F

Japanese Webike user

4/5

Cheaper and better than OEM sus.

YSS Rear Suspension.
This product is MZ456, which is the least expensive model compared to MG and MU with a separate Tank.
We tend to focus on the presence or absence of Tank, attenuation, etc., but this product EmulsionType. It is also important to note that the part that is
EmulsionType refers to a structure without the membrane that is normally present between Gas and Oil. It seems to be a structure that cannot be turned sideways, which should not be a problem for normal use.
I think it may be affected by a fall, etc.... It should not be a problem for normal use...

For CBR650F there is a caveat.
First, the MZ456 that comes up when searching for CBR650F on webike is CBR650F But Late (Part No. 117-2511224). (Part No. 117-2511224)
(By the way, even in the later stage, the one for CB650F is 117-2511510, so it is different.)

117-2511210 is compatible with CBR650F first half. This product is common with CB650F first half.

As a side note, when I first purchased the MZ456, it was listed on the YSSJapan homepage as having a spring rate of 180 N/mm, but the product I received had a spring of 160 N/mm.
I checked and it was 160 on the YSSHomepage in Thailand, probably due to a model change (the model change for CBR650F changed the fitment a few years ago),
I think you copied and pasted the Spring rate as it was in the previous product.
I contacted YSSJapan about this misrepresentation and it has now been corrected.
I was lucky for myself because I was originally planning to wear a 150-160 Spring. I'm glad I didn't buy the pane...

Now, the installation.
Since it is a full cowl car, the removal of the cowl is a bit of a hassle, but once that is done, there is nothing special to be done.
If the jack is raised behind the center of gravity, except for the rear suspension, the rest can be easily removed by simply loosening the screws.
It has a ride height adjustment feature and was slightly shorter when opened compared to the OEM. it would be better to install it after the OEM standard.

After the replacement and sagging, I actually drove about 100 km.
The comparison is to OEM sus.

First, Spring rate 160N was just right to slightly firm for my 56 kg weight.
I was wondering if 150N would be acceptable if it was for one person only, but it seems acceptable. I might gain weight...

However, it is much better than the OEM suspension. That said, the OEM suspension is so hard that I have not felt Stroke at all (not that I haven't) since I bought the car new,
Still, I think the Damper kept it from stretching so it didn't repel.
Well, not only the 650F, but OEMSpring is often designed to be used by two people, so it is generally firmer...

Damper has only rebound damping and 30 levels.
I thought the weakest one moved a little too much, so I tightened it to 20 steps.
This is good because I don't run Circuit so I can just run normally.

It did not bottom out, nor did it run short on the extension side even with bumps, etc., so it is sufficient for our purposes for now.
I was originally dissatisfied with the OEM suspension and thought that the front suspension was too soft (damping was too weak on the rebound side) and the rear suspension was too firm, so I decided to replace the rear suspension.
Both front and rear finally feel like decent suspension.

Incidentally, the OEMRear suspension is about 100,000, so MU will cost you a ton, while MZ will cost you less.
The price is lower, the spring can be replaced, the damper can be repaired even if it dies, and the damping can be adjusted, albeit only on the extension side, etc. Frankly speaking, there is no reason to choose the OEM.

If I had to venture a guess, I would say that it is inexpensive, and although it is a bit shabby in terms of appearance, it is not that noticeable, so I think it is good enough. View detail

YSS

13 Jan 2024

MONO LINE Rear Single Shock [MZ Series] MZ366

Fits: SUZUKI GSX-R 125, SUZUKI GSX-R 150

Japanese Webike user

4/5

Cosmetic as Replace Sas.

[How is it used?
Sports driving in Mini circuit, general street driving
Was the one you received as per Image?
Beautifully made and very satisfying!
Was the installation difficult?
I made a request to Motorcycle BuyShop!
How was your experience with it?
Improved compared to the much stiffer OEM, but Pre-road/Dumping needs to be adjusted!
[Included Parts:were they on?
Pre-road adjustment jig & Sticker are included
[Was there anything that disappointed you?
nothing special
Other items that would be helpful
The pre-damping was installed with the factory pre-damping, but with a weight of 60 kg, the pre-damping needed to be adjusted.
However, since the pre-adjustment cannot be done after installation, some ingenuity is required.
(1) Apply silicon spray to the screw (to make it easier to turn) (2) Purchase an acrylic round bar at a home center and round the tip to make a jig (3) Place the acrylic bar on the concave portion of the adjustment dial and input the rotation direction.
However, the adjustment dial will be scratched.
So you are on your own.
There are also oil pressure adjustment KITs available from YSS, so it may be a good idea to incorporate these into the system. View detail

YSS

06 Jan 2024

Front Fork Cartridge Kit

Fits: HONDA CBR250RR

Japanese Webike user

4/5

YSSCartridge

I purchased a YSS type from the shop and initially planned to assemble it myself. The YSS for MC51 is a type that removes the bottom bracket of the front fork and inserts it between the inner tube and the front fork.
The video on the YSS homepage shows how to replace the rear suspension, but it is quite difficult for an amateur to heat it with a heat gun, loosen the adhesive, fix it in a vice, and rotate it, so we asked Gsense where we purchased the rear suspension.

In fact, this was Large's correct answer. The YSS Cartridge we had purchased had a defective stroke amount, and if we had installed it without noticing, the Cartridge might have hit the top cap and damaged it. As expected of Gsense, which manufactures original cartridges for its own use, Gsense was very helpful in immediately noticing the problem. I am very glad that Gsense noticed it immediately.
Even though the manufacturer is growing rapidly, it still does not seem to have the quality control of a long-established manufacturer.
We pointed this out to YSSJAPAN (PMC), and the person in charge was nice enough to replace the parts in response to the ManufacturerObjection, so it took longer this time, but it worked out in the end.

The spring of YSS is 8.0N/mm, but the shop said that MC51 is usually 7.5N/mm, so I asked them to soften the setting of the front fork to make the spring harder. The OEM fluffiness is gone, and the firmness is there. Smooth weight transfer from deceleration before the Corner ring.

It is for Race, so you can say it is stiff, but it does not mean that it does not move, and its road-following performance is very high. The most important thing is that fine setting is now possible, and it is possible to take a balance with the Large and Rear suspension.

The price is quite high if you include the replacement labor, but since MC51 does not sell front forkBody, the only option is to replace the cartridges. GEARS-SUSPENSION of Taiwan and K-Tech of the United Kingdom also seem to offer the same products, but it is difficult to purchase them in Japan.

If the Rear suspension is replaced and the Front is unsatisfactory, the only way to resolve this is to replace the Cartridge, but it will be a completely different Suspension. I think it is well worth doing. View detail