Wrong filter Bought a filter for my Z4. It was the wrong type and size. Returned it as requested by the support. A month later no refund. Avoid buying stuff from their official website. I have already disputed the transaction with PayPal and am waiting for a resolution. I did email the support but no response yet.

Thieves They took our companies money to create a custom filter for our company, knowing that they wouldn't complete the project as they were going to stop doing this type of work, and they refused to refund even though they never provided the product. This company, and their associates, are a bunch of thieves.

If you hate yourself If you hate yourself, and want to make your life more miserable buy their cold air intake products and weep as you find out that they neglected to include an EO decal required by law to accompany your air intake product, in order to get your vehicle smog checked. And then rip your hair out in pure frustration as you find out their customer service hotline is just a dead end loop leading to the same message robot with options extension number that don’t even work. Complete nightmare.

Thanks K&NO... I bought a product on March 9th, 2024, it was a cool air intake for my chevy Colorado. a few days went by, and they emailed me saying my card failed? i tried again and of course it worked because my card never fails. its been a week now and still didn't get my product. 2 weeks later and my cool air intake comes in with the weld being upside down so im not a ble to even install it. i called them and they said they would ship me a new one and still no product it's been a month and a half. thank K&N...

Ordered a filter which turned up… Ordered a filter which turned up looking worse than the one that came off the car!! Was told it must have got damaged on delivery to which I made them aware the packaging is not damaged in the slightest, and that it had left their warehouse damaged!! Placing the order went very smooth it was trying to get a response from anyone afterwards which proved to be difficult! However luckily I got through to a gentleman called Alan in the UK centre who sounded very stressed and mentioned also there is nobody manning the phones and how he’s trying to do it all!! I mean for a company that have been running this long that is pretty poor! Managed to get a replacement in the end but it was a task getting it!