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Discussion Starter · #1 · (Edited)
Just wanted to share my bad experience with this product. I purchased this air filter (Sprint P08) for my 2017 GSXR 1000 and have used for about 2000 miles. The bike is seldom used and currently has a total of 2500 miles, never ridden on any dirt roads and always stored in a garage.

Unfortunately when I went to service the air filter recently, I discovered the inside of my air box coated in a thin layer of dust. The amount of dirt being let in by this premium filter marketed for street use is simply unacceptable. I’ve never experienced such an issue with any other brand of air filters including OEM.

Upon closer examination, the filter’s poor build quality became alarmingly apparent. The attached pictures clearly shows an uneven molding of the filter’s sealing surface. Adding to my growing concern are the numerous threads from customers experiencing the same thing. This quality issue is not just isolated to this particular model and it appears to be affecting other brands of bikes as well. I’ve provided some pictures to help illustrate my predicament and I pray that no long-term engine damage has been done. I definitely won’t be recommending this brand to people I know.

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Discussion Starter · #3 · (Edited)
No Sprint specifically states their polyester filters are not meant to be oiled like your typical cotton or foam filters. That was kinda the selling point for me, the ability to simply clean with compressed air and reuse. I've always stuck with OEM paper filters in the past but Sprint's marketing with the University of Wales conducting a study swayed me. I guess the study wasn't peer reviewed :unsure: Learned my lesson but it's still disappointing to know that the $38 stock filter is noticeably better in build quality compared to this $100+ aftermarket filter.
 

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Discussion Starter · #6 · (Edited)
they are a RACE filter - that means they keep birds, turtles and small children out of your engine - want more filter get a street one or stock
  • these are made for absolutely the most air flow possible not to filter the small particles in your pics.
  • there is not a difference you can feel on a 1000cc bike anyway.
  • i do not sell these to street customers

jason
they are a RACE filter - that means they keep birds, turtles and small children out of your engine - want more filter get a street one or stock
  • these are made for absolutely the most air flow possible not to filter the small particles in your pics.
  • there is not a difference you can feel on a 1000cc bike anyway.
  • i do not sell these to street customers

jason
Appreciate the feedback Jason, your insight is always welcomed. When I initially purchased the filter I went with the standard P08 filter since it was marketed for street use not the P08 F1-85 or P16 race filters. I’m guessing the main issues is the filter not sealing up correctly around the edges due to the questionable job Sprint did on its molding. Well at least it did it’s job in keeping small children and turtles out of my air box 😂
 

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Discussion Starter · #7 · (Edited)
Opening larger holes in the filter material is bound to let dust through. The idea of no oil is great, but to me it was the reason I went with a MWR WSBK filter instead.

Over the years I've used many filters that need oiled and cleaned so it was no big deal to stay with that type. A little less performance for a bit more piece of mind, even in my track only bike.
Yeah I totally agree but I guess I fell for the marketing hype. The study performed by a credible a university highlighted the polyester filter media used was weaved at a much tighter density compared to the cotton filter types. However. I think this is more of a sealing issue around the filter’s edges due to the poor job Sprint did on its moldings. If you look around on other forums you’ll see other users having similar issues with sealing. The MWR filter you’re using I’m sure is advertised as a race filter and I’m willing to bet it doesn’t let this much junk into your air box? I’m also very familiar with oil type air filters as I’ve used the foam types for years on my motocross bikes with out any issue.
 
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