Air Filters & Intakes. Air Filter & Intakes. Stock Replacement Air Filters. Stage 2 & 3 Air Filters. Electric Traps with Glue. Yamaha XSR 900 (2022) DNA Air Filter Stage 2 P-Y9N21-S2. DNA Increased Air Flow +54.78%, DNA Filtering Efficiency 99-99%. The DNA Stage 2 Kit, can be either a DNA filter or a DNA cover that is designed to replace a part of the air box, seriously increasing air flow to the engine. With the proper fuel recalibration the results are always very impressive. OEM Air Filter Air Flow : 94.20 CFM. DNA Air Filter Air Flow : 145.80 CFM. DNA Increased Air Flow : +54.78%. DNA Filtering Efficiency : 98-99%. This filter features DNA®’s Stage 2 kit eliminates the OEM intake snorkel of YAMAHA models and offers higher performance and better intake sound. This Stage 2 kit is designed to replace the stock plastic air box top cover and OEM air filter. With the use of P-Y9N21-S2 there is no need to use the OEM air filter or DNA P-Y9N21-01. Included in the Stage 2 kit you will find all the necessary parts to install the Stage 2. Special stainless steel bracket for mounting the stock ECU is supplied and also zip ties to mount and tie down your ECU are supplied. The airflow of this new DNA Stage 2 air filteris +54.78% more than the stock YAMAHA air box with OEM air filter & stock air box cover applied! This DNA® Stage 2 kit is designed as a High Flow product for:’Road & Race use’. The Anatomy of a DNA High Performance Filter. This is what Power is made of! A DNA High Performance Filter is a high quality, next generation multilayer cotton gauze, flameproof, oil impregnated air filter. This very special cotton is designed by DNA’s R&D engineers for High Performance filtering purposes. The basic media is a non woven surgical cotton gauze with a modified TEX & THREAD, with extremely high strength of break. This unique cotton media, actually is a “hairy hybrid” featuring extremely high air flow rates and excellent filtering efficiency that exceeds 98%. The DNA Wire Mesh. The DNA wire mesh, is a very special material designed by DNA’s R&D engineers. Made out of marine grade 5000 series Aluminum, features a unique “wrap & fill” and precisely calculated wire diameter, to have the necessary high tensile strength and elasticity to last a lifetime. Additionaly it is protected against oxidation by a fine layer of epoxy coating. The DNA wire mesh is designed to perfectly support the cotton layers and at the same time not restrict the air flow. The DNA Filtering Media. The DNA Filtering Media consists of 4 layers of DNA cotton, sandwiched between 2 layers of DNA wire mesh, precisely pleated all together. We produce a very wide selection of media, starting from 8 mm to 50 mm height. With an infinite size of “Pitch”. Actually we can choose from an unlimited combination of DNA Filtering Media when designing a new filter. Another important feature of our filtering media is the “Large pleat edge radius”. This feature allows the edge to be an active part of the filtering media. Instead of a “dead” inactive area as our competitors is. The result is a unified high air flow of the filter. The only drawback of this design is that the media is very sensitive during production before molding and must be handled with extreme care, increasing the production cost. The DNA Filter Oil. This is an extremely important part of the DNA filter. As soon as the DNA Oil is added to the cotton media, the cotton is “static charged” and transformed into an unbeatable filtering material! To achieve this fantastic result we have developed a unique air filter oil formula. The specifications of our DNA Air Filter Oil are as impressive as our filters are. Humidity will not attack the oil, even if the filter is submersed in water. The flow of the filter remains unchanged even under extreme rainy conditions with high humidity. (We have seen many competitors’ filters transformed into a “milky mess” when it rains, severely reducing the performance of the engine). The oil has low viscosity, plus very high temperature resistance and stability. It will uniformly spread and stay on the filter regardless the temperature. Additionaly, it is UV resistant and easily soluble to assist cleaning the filter. The DNA PU (elastomer polyurethane). The DNA PU is a thixotropic material, that we use to manufacture the high quality “frame” of the filter, with unique material specifications. High tensile strength with the necessary hardness for each application, high temperature, fuel and oil resistance, the DNA PU will keep the filtering media in place, it will absorb vibration and will last for a life-time. The DNA EVA (Ethylene Vinyl Acetate polymer) closed cell seals. We use only high quality EVA seals. Precisely cut and factory installed (glued) using industrial grade adhesive, guaranty a perfect airtight sealing and trouble free filter installation for the user. The DNA EVA seals and the industrial adhesive are fuel, oil and temperature resistant. Additionally the DNA cleaner will not affect them when the filter is cleaned! The DNA FCd design technology. The DNA FCd design or “Welcome to the Future”! At least 20% and up to 80% more filtration area, using DNA FCd technology is common. The unique revolutionary design, an innovation by DNA, allows the pleated filtering media to follow precisely the air box contour, regardless the complexity of the shape, seriously increasing air flow. Taking advantage of the complete footprint of the air box, we eliminate “dead spots” that rob power. If the area is there why not use it! DNA Test & Results. The DNA Flow and Dyno Tests. We test every single filter. The DNA Air Flow Tests. For the air flow tests, we use the most advanced flow bench available today. The ROTRONICS FlowScan, is a totally computerized flow bench that measures. Mass of the air. Flow of the air. Temperature of the air. Speed of the air at various points (Pitot tubes). Absolute humidity of the air. The complete procedure is automated and computer controlled, eliminating human errors. The DNA Dyno Tests. For the Dyno Tests, we use the industry standard Dynojet chassis dyno equipped with eddy current load control, Dynojet 250LC. Our dyno cell is equipped with a variable flow air cooling system, designed to precisely simulate real world conditions. FAQs About DNA Air Filters. Does the DNA filter provide the same level of protection as the OEM filter? What is filtering efficiency? What is ISO 5011 filtering efficiency test? How does DNA measure the airflow and why is this data useful for me, the end user? Other performance filters manufacturers, claim air flow data much higher than DNA for the same model, is it possible? I also tried to find the stock OEM filter flow data from them to compare. Can i use the DNA Data? Can I change my OEM filter with a DNA without changing fueling? I have heard that only the foam filters are good for Off-Road use not the cotton ones. Can I use the DNA filter for Off-Road use? Can I use the DNA filter un-oiled? Must I always apply oil after cleaning it? I have seen, in many other cotton filters, the rubber material the filter is made of, has leaked all over the filtering media severely reducing the filtering area. Can this happen to the DNA filters? I have a race bike. Do I need to use a filter and if yes why DNA? What is DNA FCd design? How often do I have to clean my DNA filter? Can I use gasoline, thinners or compressed air to clean my DNA filter? Yes and even better, the DNA filters have a filtering efficiency of minimum 98% (ISO 5011 test). Good quality OEM paper filters are from 97% to 99% and the foam filters are from 92% to 97%. Filtering efficiency is the amount of “dirt” the filter can maintain (stop) and protect the engine efficiently. For example, the DNA Filter for every 100 grams of dirt that it will receive, it will “trap” 98-99 grams, and this applies even to fine dirt as small as 5 microns. The percentage of dust that the filter retains during a laboratory test, following the ISO 5011 protocol. DNA uses the most advanced computerized ROTRONICS flowbench available today. The complete procedure is computer controlled/automated, to avoid human error. Additionally, wa always test the DNA filters back to back, the same day and time, with the stock OEM filters and publish the results. Reading our data, you can immediately see the differences in air flow, between the 2 filters and what to expect by using the DNA filters. Well guess what, the data claimed were false, nothing to do with the reality! Of course the flow was higher than the stock but much lower compared to the DNA! No wonder they never compare it with the stock, as they can’t claim 300%! Increase in air flow over the stock OEM filter. Only data measured back to back the same time are comparable, don’t forget we are measuring air! This is why we always publish the stock OEM data. In cases the air flow of the DNA Filter is extremely high we include with the filter special instructions. DNA has developed a unique filtering media that is perfect for off-road use. During the toughest rally in the world, DAKAR 2011 in Argentina – Chile, one of the factory Aprilia 450 Rally bikes, was racing with DNA filter. The results were very impressive compared to the rest of the team’s bikes racing with foam filters. Every evening when the bikes were serviced, compared back to back the DNA filter and the foam filters, absolutely no dust had passed through and the engine was like new! Not to mention that one filter was enough for each day, compared to 2 or 3 foam filters per day the other bikes had to use. So this myth is busted! No, you must never use the DNA filter un-oiled. The oil is a crucial part of the filtering media. You must always apply the Special DNA filter oil, not just any oil, after servicing the filter. Absolutely no, DNA uses very special thixotropic polyurethane that will not leak in the filtering media reducing the active filtering area, when we produce our round filters. Concerning the panel filters, we will allow a controlled 3 to 5 mm leak, that is nothing compared to the uneven 10 to 15 mm leak that our competitors have. Race bikes must be kept always in top condition, especially the engine. Debris and flying bugs found at the track, plus rubber from the bikes’ tires in front, can seriously damage the engine. DNA will provide the maximum air flow and at the same time maximum protection. We do not compromise filtering efficiency in order to increase flow; we increase air flow using our revolutionary FCd design, maintaining the 4 layer reliable DNA filtering media. If you want the highest air flow and filtering efficiency of 98% for your race engine, then your only choice is DNA. The DNA FCd design is an innovation by DNA. It allows the pleated filtering media to follow precisely the air box contour, regardless the complexity of the shape. Using the complete footprint of the air box, we eliminate “dead spots” that rob power and at the same time seriously increase air flow. Using DNA FCd technology, at least 20% and up to 80% more filtration area is common! The servicing intervals depend on the environment that the vehicle is used. Once a year or every 15.000 to 30.000 km is suggested, to keep your DNA filter in top condition. An easy way to check if the filter needs cleaning, is to see if the wire mesh that that is on the dirty side, is visible. If you can see the mesh, you can continue using the filter. If the mesh is totally covered in debris, you must clean the filter. You must treat your DNA filter as delicate textile. How woulld you clean an expensive and delicate garment? First of all read the cleaning instructions, then follow them carefully. Every DNA filter packaging & the DNA service products include detailed cleaning instructions. The procedure is very user friendly. If we anticipate a longer lead time, it will be noted in the item description. For customers that need their parts urgently we offer UPS and DHL Courier Service. UPS and DHL are using their global network to deliver on time for your needs the products ordered. This service is optional and it comes with an extra charge. Please note that, in this case, you will be accepting responsibility if anything were to happen to the package. Required by your country for importing consumer goods. In the event of a defect, these are your exclusive remedies. Such benefits may include additional warranties or rights relating to the performance of this product and remedies applicable in the event of a defect. Sole and Exclusive Remedy. RETURN OF NON-DEFECTIVE PRODUCTS. Thus, we offer the option to our customers to return even non defective products. Specifically, the item should not have been unpacked (apart from trying it of course), scratched, broken or painted. Also the item must have its original box. The return of a non-defective product can only be done once. This credit balance can be used in any new order for the customer wishes. In case you want to cancel your order, please keep in mind that the cancellation will be accepted within 2 hour of the order completion. Beyond that point no cancellation will be accepted. Once we receive and inspect the product, we will credit your account. Please allow 5-7 days for a credit to appear on your account. There is nothing to worry about. 10:00 – 19:00. 12 Gateway mews – N11 2UT – London – United Kingdom. TPL IKE, is a Greek Company based in Patras established by a team of engineers whose sole goal was bringing high-quality shopping experience to any enthusiast who visits us online. Our team comprises of talented and committed engineers with wide technological expertise and experience in the motorsports industry. We hope our friendly and fair customer approach differentiates us from the competition out there. For us, the customer always comes first and we always do our best to make sure that each customer has an experience which is exemplary of our brand. Our principles of offering top products, quality, service and rapid availability kept us going all these years. Ethnomartyron 40 – 26 333 – Patras – Greece. This item is in the category “Vehicle Parts & Accessories\Motorcycle & Scooter Parts & Accessories\Air Intake & Fuel Delivery\Air Filters”. The seller is “thirdpartylogistics” and is located in this country: GR. This item can be shipped worldwide.

• Brand: DNA Filters
• Manufacturer Part Number: P-Y9N21-S2
• EAN: 5212008392567