【KOSO】Racing Air Filter Review
Best value reusable high efficiency air filter
About quality and texture, I can confirm that the quality is great and that the material used is a coarse sponge for the filter and a hard plastic for the filter frame. About the feeling of use, This air filter is highly efficient when used with the original air cleaner box and compared to using the original air filter with the same setup. The ability to reuse the sponge filter also makes it the best value air filter available. Products to buy together, If you are looking for good performance from the original air cleaner box then you will be needing to add the larger diameter air duct to your cart. Difficulty of installation, I can say the fitment of the air filter for my installation was very easy due to the ease of access to the cover of the air cleaner box that needs removing before simply placing the air filter in and installing the cover to secure the air filter in place. Cost performance and comparison with other products, The pricing of the product is the best. You receive an air filter made from quality materials that can be disassembled, cleaned and reused for thousands of miles. This air filter is much cheaper then other reusable air filters and more efficient then other similar priced disposable air filters. About shipping and packaging, My order was shipped within 48 hours of me placing the order and I received a few emails advising me of the status up until the order was dispatched. I find the link supplied to track my order very useful and the order arrived within the estimated date range. Any concerns, cautions, or advice when purchasing, I have no concerns or cautions when purchasing from Webike. I cannot recommend Webike enough for the majority of your biking needs. They not only sell aftermarket parts and bike gear but also OEM parts for your repairs and servicing needs.
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Other reviews
Reliable quality.
When I replaced it with a uniFilter, the intake noise was too loud. This is cheap and very quiet, whether coarse or fine. I can hear the navigation sound even at full throttle. View detail
Easy to install with excellent cost performance ◎
■ Product features
This is a Type product that replaces the air filter in the OEM air cleaner box.
The OEM Air Filter is a paper type, but this product is a mesh type, so the air permeability of the material itself is high.
The filter area is also quite large, so the air in the air cleaner box will be almost at maximum efficiency.
■ About installation
If you only need to remove and install this product, you do not need to remove the Cowl because you can remove the Cover by inserting your hand through the gap in the Front and turning the Screw.
However, if you want to replace or remove the Air ductHose, you would need to remove the Left Side Cowl.
About ■Filter
The filter has a rough and fine filter, but we use the fine filter because we do not have a Merit that uses Sugar Crystal due to the suction resistance inside and outside the box, as described below.
I'm going to go a little off topic, but I think it is important, so I will briefly describe my findings.
We hope this will be helpful to those who are purchasing.
■About suction resistance
By installing this product, the resistance caused by the air filter when passing from the cover of the box to the box body can be reduced, and the change in the material of the filter and the increase in the area of the filter aim to increase the air passage rate through the filter. The air filter is designed to be more efficient in passing air through the filter.
However, in the case of the Grom, it is not the resistance of the Air Filter that is the problem for increasing suction volume, but the resistance of the Air DuctHose that sucks air into the box and the inside diameter of the Intake Pipe that sends air to the Throttle body that is the Neck. If the resistance of these parts is not reduced or the bore diameter is not widened, the improvement in suction volume cannot be achieved.
Suction Duct to Air cleaner
The Large Diameter Air DuctHose is a third-party product that is marketed by removing the OEMHose, modifying it to widen the bore, and installing the Hose. Personally, I have been resisting the idea of installing a Hose in the first place, and I don't think it is necessary in the first place, so I have removed the OEM Hose and am using it. The direction of intake is changed, but from the position of the box, I think it is better to inhale from the top because the suction temperature is lower. "Ngooooo." and sound, but the volume is not so loud that it can be heard by those around him, and if he does not mind, he can remove it.
Intake Pipe from Air cleaner to Slovo
The InnerIntake Pipe inside the box, or InnerIntake Pipe as it is called, can be disconnected from the HRC Grom due to a regulation revision a few years ago. Removing this connection shortens the length of the hose and improves the suction resistance from the inside of the box to the throttle body a little.
Looking at the Net article, I see that some people have put a RACINGFunnel here, but in my personal opinion, I think that adding a funnel looks beautiful, but has little effect on performance.
Adding a funnel narrows the entrance diameter by the amount of funnel, so even if you have reduced the resistance, you may have to increase the resistance again.
■Precautions for installation
OEM filters are installed in a way that they fit inside the box, but this product is sandwiched between the body of the box and the cover, so the outer diameter of the box is larger and the capacity itself is increased. Therefore, please be careful if you have replaced the Horn with a third party product, as it may get stuck.
Also, removing the Duct and Hose above will improve the Torque depression above 6500 RPM a little, but Response at low RPM will be just a little worse.
Also, if this is done with the OEM exhaust system, the air cleaner may sometimes make a banging sound when blowing back, so it is recommended to properly balance the intake and exhaust air (i.e., replace the exhaust system).
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It's like being in between the OEM's Boxes.
[How is it used?
Commuter use, Exhaust System replaced.
Was the one you received as per Image?
As per Image, it looks spacious and well aired.
Was the installation difficult?
It's easy
At first, it's just like an OEMFilter.
I thought I could go inside.
It was sandwiched between the lid of the AirCleanerBox and the Body.
Therefore, the reddish part is visible from the outside.
Maybe subtle if you don't want to show it from the outside?
How was your experience with it?
I feel the intake has improved.
[Included Parts:were they on?
It comes with.
There are two types of filters:rough and fine.
View detail
GunGun suck it up!
Looks and performs no different than the Mukawa, and yet it's a cosmetic!
I ride it to work, so Air cleanerBox is a must for me, and I'm even closer to Commuter Express Spec.!
The installation is very easy, but I'm a pain in the ass, so I took a side and did the access directly with the exterior.
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