MORE AIR = MORE POWER!
I have been trying to find the biggest free flow reusable air filter i can find that will fit inside the body plastic fairings and i found one!!! its K&N RU-4720.
It has double hole and has largest surface area that is still inside the plastic fairings. it wont touch the other moving parts of your motorcycle.
Having the biggest surface intake area for your motorbike means increase horsepower and acceleration. This is due to more air is coming to your engine.
Using this K&N Racing air filter will provide high air flow with excellent filtration. This is also a clamp-on washable and reusable air filter.
K&N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media, engineered to improve airflow and capture contaminants-and designed to give you an increase in horsepower. Protect your engine with the filter that millions of riders have trusted since 1969, from motogp racing to road racing and even for daily use motorcycles.
K&N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, radio-controlled cars, generators, snowmobiles, tractors, and other applications. Regardless of the angle or offset diameter of the air intake, there is probably a K&N Universal air filter for your equipment. All filters are constructed with ultra-strong molded pliable rubber flanges which absorb vibration and allow for secure attachment and can also be stretched for up to 1/16 of an inch (1.5mm) to fit in-between sizes. K&N universal air filters are washable and reusable.
You can use this K&N air filter to your Yamaha Y15ZR or even the newest Y16ZR motorcycle. Honda Supercub are perfect for k&n air filter as it changes the sound of your bike to a more bassier engine sound.