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Store network8 Stores accross the UK
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15+ Years OnlineTried, tested, trusted
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K&N Air Filters
High air flow and filtration technology
K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. K&N make over 1,200 different replacement air filters for virtually every vehicle on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace it with a K&N. Their stock replacement air filters for street vehicles are covered by their famous K&N Million-Mile Limited Warranty and will be THE LAST AIR FILTER YOUR VEHICLE WILL EVER NEED.
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Verified Customer Reviews for K&N Air Filters
Does what it says on the box 
K&N Air Filter BM-3117 - BMW
K&N Air Filter BM-3117 - BMW 05 October 2023 by Paul R
Great fit, great quality, makes throttle more responsive. More power?? No idea, but sounds like it!!
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Great product 
K&N Air Filter KA-9098 - Kawasaki
K&N Air Filter KA-9098 - Kawasaki 01 October 2023 by Sean S
Perfect fit for my zx9r and gives it that bit more responsive feel about the bike
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Air filter - Ducati 
K&N Air Filter DU-1006 - Ducati
K&N Air Filter DU-1006 - Ducati 04 July 2023 by Anonymous
Excellent service, prompt delivery
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Fantastic upgrade 
K&N Air Filter MG-8516 - Moto Guzzi
K&N Air Filter MG-8516 - Moto Guzzi 30 June 2023 by Anonymous
Didn't think a simple filter swap would make a difference to the engine sound.
Much deeper rumble when idle with a more pronounced rasp when accelerating.
No idea about performance other than a very subtle increase in low end torque and no negative affects of the swap on the fueling.
Easy to install.
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5 stars 
K&N Air Filter SU-6006 - Suzuki
K&N Air Filter SU-6006 - Suzuki 25 May 2023 by Robert B
Fits perfectly, peace of mind it's doing a great job and will last forever.
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