YSS JAPAN Motorcycle Reviews

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MONO LINE Rear Single Shock [MZ Series] MZ366

YSS

01 Apr 2022

Fork Upgrade Kit

Fits: KAWASAKI Z250SL, KAWASAKI NINJA2 Helmet50RSL

Japanese Webike user

5/5

Worth the price.

Ninja250SL/The OEMFork of the Z250SL is not the most comfortable to ride on the street, as it is soft and has a thrust to it that comes back to you during cornering. Still, the light weight of the vehicle can be deceiving. "I think I'll leave it as OEM - I'll just add a Preload Adjuster..." However, I took the plunge and purchased the Upgrade Kit, partly because I had replaced the Rear suspension with YSS.

For installation, since the fork cap is a C-ring type, an SST with a portion of the clamp cut off is required, but anyone who can change the fork oil can install it themselves.

In case of PD ValveUnit Purchase, many models require orifice modification, but in case of Z250SL, for some reason, there is no description about orifice modification even in Instruction Manual. Large enough to have little or no damping.

Normally, it is necessary to cut the collar for the PD Valve, but the Upgrade Kit comes with a pre-cut collar, so this work is not necessary. It is a hassle to cut the collars horizontally, so it is good that you can install the collars by yourself as long as you can remove the fork caps.

The kit included 30W Fork oil, and the instructions were to put in 300ml each. However, reading some of my predecessors' blogs, etc., I found that some people were installing the kit with the OEM specified 10-15W and the specified amount (about 350ml), so I tried setting it with the latter for the time being. If I feel it bottoms out or is too soft, I will change it to 30W.

The first thing you'll notice when you install it is It's kind of softening." I thought it would be harder because of the Reinforcement Spring, but it was softer in the beginning, and the thrust when riding on the street was drastically reduced and the ride quality was improved.

I went touring with it and attacked the descent of a certain Tsubaki Pass quite seriously, but it held firm against sudden braking and did not bottom out, allowing me to attack with confidence. Even a high degree of freedom in line taking is now even freer. No one rides this Motorcycle and says it can't turn. Cornering has become so much easier that it seems to be.

I also drove Izusuka after that, and to begin with, Izusuka with 250 is not fun because even if you are always at full throttle, you are left behind by the litters, but even at high speed cornering, the front does not come back during cornering, so the line is perfectly set and very comfortable. Of course, since it is an SL, the line can be changed freely even from full bank, but anyway, the increased sense of ground contact of the front gives me a feeling of security.

Preload AdjusterSingle Body was about 10,000, so 35,000 is a good price considering it includes PD Valve and Reinforcement Spring. I think it is worth it. If you are not sure about the price, you will not regret installing it.

The only drawback is that the PD Valve damping adjustment can only be made by draining the Fork oil and removing the PD Valve under the Spring. Although this is unavoidable due to the system of retrofit damping adjustment, the C-ring type top cap is troublesome to remove and install, so I only do it when I change the fork oil, and I do not feel like removing the fork and adjusting it again just because it is a little different after driving.

If you change the front and rear suspension and put on high grip tires around α13-SP It's hard to fall over on a public road unless you're doing it on purpose. It will be a CorneringMachine that makes you feel like you are a part of the world. It makes touring fun because you have a sense of security that you can definitely turn, and you may think that you have become good at it, but be careful, because just because it is a motorcycle that anyone can turn does not mean that you have become good at it. View detail

YSS

27 Mar 2022

Fork Upgrade Kit

Fits: KAWASAKI Z250SL, KAWASAKI NINJA2 Helmet50RSL

Japanese Webike user

5/5

Worth the price.

I was interested in the PD Valve because the OEMFork of the Z250SL is too soft and it comes back undulating during cornering, but I was hesitant because orifice machining and cutting of the color seems to be troublesome.

I thought about adding only the Preload Adjuster, but then I thought that 35,000 yen including the Reinforcement Spring might not be too expensive.

In the case of Z250SL, if you have a kill to remove the C-ring on the fork top and can change the fork oil, you can install it without any problem.

The advantage of the Kit is that no orifice machining is required? and that the kit comes with a collar that is shorter than the OEM collar, so there is no need to modify it yourself. I thought I would have to modify the orifice anyway, but the instruction manual says that I only need to fit the PD Valve straight to the fork bottom, not to fully reverse the Fork. However, I have seen some people running Ninja 250SL on the Circuit who have modified the orifice, so it is a bit of a mystery, but at least there are no instructions for modification in the Instruction Manual.

When I installed it, it was softer than I expected. Is this really going to attenuate?" But when I started riding out, I was surprised. The ride quality was much better, with less thrust and better road-following performance when riding around town.

Even when fully braked, the bottom doesn't stick out, and the fork doesn't return excessively even when plunging into a high speed corner, so the line is drumstick-set. If you know the Camellia, you will understand the confidence in the suspension when I say that I was able to attack the downhill of the Camellia without any worries.

Since the Z does not run on a circuit, if you consider it for city driving and touring use, I think the parts give you the satisfaction that is worth the price.

There is only one drawback:the PD Valve is a part that is placed under the Spring in the Fork, so if you want to adjust the damping, you have to pull out the Oil and take out the Valve. This is unavoidable because of the retrofitted damping, but it would be nice to be able to adjust it on the car.

If you are a Ninja 250SL or Z250SL rider and are not sure about purchasing this Fork Upgrade Kit If the reason not to buy is price, buy. If the reason to buy is price, don't buy." I would like to offer the following words of wisdom. It is possible to adjust the pre-road, so you can kill three birds with one stone (Pre-road, Reinforcement Spring, and PD Valve). View detail

MONO LINE Rear Mono Shock [MZ Series] MZ456

MINI LINE Rear Single Shock [MX Series] MX366

SPORTS LINE Rear Twin Shock [E Series] E302

MINI LINE Rear Mono Shock [MZ Series] MZ362

SPORTS LINE Rear twin shock [ZSeries] Z362

YSS

27 Oct 2021

Rear Twin Shock [TG Black / Red Series]

Fits: HONDA ADV150

Japanese Webike user

5/5

Easy to adjust pre-road and damping force

I installed Black on my ADV150. I leave the replacement work to PRO.
I have never used High-end like OHLINS or NITRON, and this is a Review on it.
Please understand the premise.

The initial Suspension of ADV150 has no adjustment function and the official website says "Damper with 120-stroke reserver tank is adopted for Rear Suspension to provide stable damping force, and combined with progressive load characteristics by 3-stage rate spring, it pursues comfortable ride even when driving two people or on rough road. There it is." The original setting is quite firm, as shown in the following table.
Some people say that ADV150 has hard Seat but I thought it is not because of Seat but because of initial Suspension setting. If you have ever adjusted it, you will understand that the comfort adjustment of suspension is totally different for single rider and Tandem assumption (+50kg+ overweight at the back). The early ADV150 is adjusted enough to be comfortable even for Tandem.

So, if I can make it soft when I ride alone, I bought it also to change the color because I felt that the Gold colored Reserver tank was too assertive.

Pre-road adjustment function
This function adjusts the width (distance) at which Spring oscillates.
φSimply turn it with a 5mm Gold genus rod for easy adjustment.
The suspension is infinitely variable, and at the top it is so stiff that the spring almost comes off, and at 30mm down it becomes as stiff as the initial suspension. The ride quality changes visibly, so you can set the ride quality to your liking.
I weigh about 60kg, and I settled on about 15mm, which is a little soft.
φThe 5mm Gold genus rod is placed in the on-board tool and can be adjusted at any time.

Damping force adjustment function
This function adjusts how fast the spring shakes when it receives an impact.
Simply turn the slotted screwdriver for easy adjustment.
Turn Left for Soft (Spring returns slowly), and turn Right for Hard (Spring returns quickly).
In some places, the official YSS description says there are 20 levels, but due to product improvements, there are actually 30 levels.
(On the product that arrived...) "Notice of Product Improvements." (The paper was enclosed with a notice of
……For some reason, with the product I received, I can click 31 steps no matter how many times I count, but well, it's a tiny difference.
Because I don't do any sport driving, I don't feel the effect is as good as the pre-road adjustment above, but it's adjustable anyway.
When initially installed, the Right was 15/31 steps and the Left was 7/31 steps, which for some reason was uneven. It is recommended that you align them yourself immediately after purchase.

Ride height adjustment function
Caution
It seems to be a function that can make the ride height maximum Large+10mm……, but it doesn't exist for ADV150.
The addendum paper was attached that the function is not available for ADV150.
In fact, there were no operable parts.

[Color.
The Black Tank and Spring with the Red Ring is really cool.
I like it very much.

【Review】
Whether you see this price as high or reasonable is up to you.
If you weigh about 80kg, I think the ride quality is not bad even with the initial suspension.
Also, it may look relatively expensive because the body price itself is low.

As for me, I was satisfied with the dress-up effect and the new way to play with it, because it is interesting to run and adjust pre-road on the way out, run and adjust pre-road on the way out……. I think it is one of the most expensive and effective custom parts for ADV150, but if you like ADV150 very much and want to drive it for long time, this is the right part. View detail