57i induction kit. Replaces your cars standard air box. Simple to fit, great sound, great performance.  57i GEN2 induction kit. Uses heat shields to keep the charge air temp down for more power!		Apollo induction kit. Closed intake system replacing the standard airbox and filter. The filter in enclosed on the Apollo so induction noise is kept to a minimum.		Typhoon cold air intake system. Makes the most power! Takes cold air from the front of your car via specially designed intake system. Great sound, great performance!

HOW DO I CHOOSE WHICH FILTER TO GO FOR?

Actually K&N have made this a fairly easy question to answer! Most cars will have a K&N panel filter option. This option will see power gains of roughly 3hp to 6hp depending upon your vehicle model and state of tune and is by far the cheapest option.

Don’t fancy a panel filter? Looking for a bit more power? Your other choice will then be an induction kit. You will find your car has either a 57i, Apollo or Typhoon kit developed for it. Most cars do not have all three induction kit options designed for them so the choice is easy, which ever kit K&N have developed for your car will be the one to go for!