Sooner or later, almost every motorcyclist asks the question of zero-resistance filters: sports riders want to go even faster, the rest do not want to lag behind the sports riders. “Nuleviki” are one of the most important topics for holivars on the forums, and here, at everyone’s favorite bikepost. Some say that this is the certain death of the engine, others responsibly declare - nothing like that. Well, I decided to check how it really is. After studying thematic forums on X-4, I came to the conclusion that the K&N zero in a standard airbox is not my option, the suction pipe has a rather small cross-section, and it is unlikely, I thought, to reveal its full potential. While getting caught up in another forum thread, I learned that “KaENs” filter only flies, and in general. Therefore, I decided to purchase “racially correct” UNI. Set of four. I took it from my hands, not used, on the same forum. In addition to them, I got 130/135 jets (stock - 108/115). The parcel arrived quickly, from the post office I taxied to a motorcycle store, where I purchased liquid for impregnating filters from the controversial company Motul. I arrived at a friend’s garage, and away we go...
First of all, the jets and float chambers of the carburetors were inspected. No dinojet, promised by the former owner of the spendthrift, was found. The jets are stock, the carbs are clean, the rubber bands are in order. We loaded the 135/130 jets into an ultrasonic washer for 10 minutes, and at the same time the XX jets went there. It's a funny thing, I'll tell you, this ultrasonic washer. It buzzes, boils, and seems to be cleaning. I didn’t try it with my finger, although the owner advised me to “feel the water” with a sly smile.
After installing the new jets in place and screwing the carburetor bar back into the motorcycle, we began to experience zen: the filters did not want to get into their rightful places, the frame and airbox were in the way, which I decided to leave “just in case.” But the zeros perfectly change their head start, to the detriment of appearance and their own suction area, and therefore were mounted in place. I would like to make a special mention of Motul impregnation liquid: it’s a hellishly sticky thing, I think if you spray it on toilet paper it will make a good trap for flies.
They collected it and started it. The speed is maintained at about 900. The XX shifter was rotated 90 degrees, which is how we achieved the manual 1100 rpm. And at the same time, we synchronized the carbs, so that everything would be completely human.
And the best part: the results. Mot drove faster. Not “AH!”, not even “Wow!”, but, you know, such a solid “However...”. It spins up more willingly, the sound has changed, the intake has become audible, just like on the muscle cars I adore. What’s interesting is that the brains from the blackbird (put it on the X to shift the cutoff) didn’t like the new feature at all. I returned the ECU to stock. I haven’t driven much yet, about 100 km. We’ll find out in a couple of months what will happen next, and what effect “nuleviks” have during long-term use.
K&N zero resistance filters
K&N zero resistance filters
The main function of a zero-resistance filter, like any other air filter, is to clean the air and protect the engine from dirt getting into it. But many filters, especially paper ones, while providing good cleaning, cause the motor to lose power, because dense paper elements have great resistance to air flow. Nulevik is an excellent replacement for standard consumables. It has a more complex design, which makes it possible to minimize intake resistance and increase power, while its filtering capacity does not decrease, which helps protect systems from contamination and the engine from wear. Nulevik helps to avoid frequent replacement, as happens with standard filters, which have to be changed every 8000-12000 km. Special cleaning products allow you to clean the filter and restore its cleaning properties. On the world market, the American company K&N stands out among the main manufacturers of zero filters.
About company
K&N
was founded in California in 1969 and introduced its new invention to the market - reusable filters. Since then, thanks to improved technology, the company has become the world's leading manufacturer of cleanable air filters and air intake systems (air filter box). The company's product range includes various consumables that are intended for car engines, motorcycles and other industrial engines. The core philosophy of K&N Filters engineers is to create a filter that delivers the benefits of increased engine performance, cost savings from reduced gasoline consumption, financial benefits from long life, and environmental benefits. Products include more than 3,700 items, and they are constantly increasing thanks to new products. And due to the increase in global demand for cars and motorcycles in the future, K/N plans to become one of the main suppliers of consumables to automotive manufacturing plants.
KN filter range
The company produces standard high-quality oil and air filters “Made in USA”, zero filters and their special series (Harley-Davidson, Off-Road, etc.), air intakes and care products. Standard KN air filters
are designed to clean air flows from fine road dust and dirt; they are made from pleated cotton material, which extends the service life of the consumables, and its multi-layer nature makes it possible to clean the air flow even better. They fit perfectly into the standard air filter box and, if necessary, are equipped with gaskets for precise fixation. These consumables are disposable and require replacement when they become dirty.
The company also offers its proprietary air intakes
for motorcycles with V-Twin engines and sports ATVs.
The AirCharger air system for Harley-Davidson motorcycles improves the appearance of the bike, making it more aggressive, and increases engine performance.
The system consists of a small air filter, a high-strength aluminum tube and a ventilation system. Harley-Davidson's Street Metal Series features an aluminum skid plate, oversized air cleaner and mirror-finished cover for great looks and smooth performance.
The RK line for Harley-Davidson with a small filter and aluminum backing plate is designed for increased power and long service intervals.
The chrome-plated RK series is perfect for cruisers; it will make your bike noticeable, and the engine will run smoothly and efficiently.
AirCharger UTV intakes are designed specifically for motorcycles used in off-road and extreme conditions.
The AirCharger ATV is designed specifically for racing and sport. Using precision flow technology, the company has developed a high-pressure bushing with an aluminum heat barrier coating that provides protection and high flow performance in racing conditions. K&N zero filters
Among air filters, a special series stands out - zero resistance filters. They have reduced resistance to air passage. Such an air vent looks very similar to a paper one, but has a number of differences. Its outer surface is reinforced with steel mesh, which perfectly protects the filter element from mechanical damage. Under the mesh there is an inner layer consisting of high-strength cotton fiber with a unique structure. The fiber consists of several layers (from 4 to 6 depending on the design), and has the main function of air filtration. This device helps the nulevik to perfectly retain small particles in the environment.
The company's product range includes a line of air filters for Harley-Davidson
(eg K&N HD-1208 for Harley-Davidson XR1200X -08-12), which allow you to improve the performance of the motor.
Series Sport bike high-flow air filters
- These are reusable air filters with a wide surface pleated material, ideal for racing conditions, provide filtration of large air flows and increase power. (eg K&N HA-1008 for Honda CBR1000RR 08-16).
Off-Road
offers filters for motocross, enduro and ATV motorcycles. This washable filter perfectly protects against dirt off-road, allowing you to increase the power of your equipment (for example, K&N KA-1203 for Kawasaki KLX125, Suzuki DRZ125). All zero filters are easy to install and come pre-lubricated with a special compound.
How to properly clean a zero resistance filter?
Like the foam filter, the nulevik needs to be washed and treated with a special solution. To care for reusable air filters, the company offers a professional care kit, K&N Recharger (355 ml cleaner and 204 ml aerosol impregnation oil). This zero filter cleaning and lubrication kit effectively removes dirt and dried oil from the surface of the air filter without damaging the cotton material. The special composition of the impregnating lubricant allows you to capture small particles of road dust, reliably protecting the engine. It is strongly recommended not to use other zero resistance filter cleaning kits as this may damage the cotton material. To clean a dirty zero filter, spray KN Air Filter Cleaner and Degreaser on both sides of the filter and let it soak in for 10 minutes, do not allow the product to dry completely. Next, rinse the air filter with cool water and thoroughly remove all dirt. If all the dirt is not completely removed, repeat the procedure. After washing, allow the filter to dry. Do not start soaking with oil until the filter is completely dry, otherwise lumps will form. The unique impregnation oil formula can significantly improve the quality of filtration of microparticles, and also promotes the formation of an outer layer of large dirt particles, which further help air filtration, trapping smaller dust fractions. To impregnate, spray the aerosol evenly over the filter on each side. After the grease has dried, coat the light areas again. Allow the filter to dry for 20 minutes, after which it is ready for installation. Don't forget to check it regularly for contaminants that can noticeably impair the performance of your engine. Typically, the service life of zero vehicles with proper care is 1,600,000 km
.
Where to buy an original K&N filter for a motorcycle?
The American company KN offers its customers various types of oil filters and reusable zero-resistance filters, as well as air intakes. All products have received many awards and have proven themselves in various racing competitions.
Original KN zero air filters are manufactured in the USA. In Russia, filters are sold through official dealers, which include the Moto-Stock store. Our catalog contains zero wheels for most motorcycles of two series: for urban use and for participation in competitions.
Standard KN air filters for daily city use are perfect for any motorcycle; they reliably protect the engine from dirt and dust particles, reducing fuel consumption and increasing engine power.
You can select and buy a K&N filter for a motorcycle in the motorcycle spare parts catalog on the website moto-stock.ru. To order delivery within Russia, add the item to your cart and place your order.
