2PCS Motorcycle 45MM Air Intake Filter Universal Carburetor Air Filter Cleaner for Dirt Pit ATV SSR TTR Bike Breather Filter Fit for Many Different Carburetors (Red 45MM)

Good replacement for air box on 1973 CB350 Twin. Made well

Fit perfectly I like the way they look came in quick nicely packaged

Was as described very high quality I love it

I ordered these for a 1982 Yamaha XV920 Virago. They would have not supplied enough air for a 920cc engine in original form. I trimmed the rubber joints to the diameter of the carburetors and cut the steel part of the filter seats with tin snips to allow as much airflow as possible. I used Permatex Ultra Black to attach the rubber joint to the filters. This stuff sticks to rubber incredibly well. Lastly, I cut 1 inch holes in the end caps and installed Unifilter vents. The bike had Unifilter clamp-on filters that were old and needed replaced. The carbs were completely rejetted. These new filters will fit 1981-1983 Yamaha XV750 and 920 perfectly. The bike runs great.

Made my lifan xpect 200cc a lot more throatiery

The media could not be loaded. I’ve been using K&N brand filters for decades and like them a lot. The K&N filters are approximately 10x more expensive than these filters I’m reviewing (that’s correct ~$50 for a tiny K&N filter as opposed to $5 for this one being reviewed).So my expectations where low but I’ve had such great performance from K&N filters and K&N doesn’t make one this same size (or I would have just bought one from them) I thought I’d give it a go.I’m using this on a chainsaw—one of the modern ones with electronic choke (not full on fuel injection—but some electronics in there that self adjust the fuel mix for hot or cold days or whether you’re running 40:1 or 50:1 two stroke mix or whatever). It’s set up so the user can make manual adjustments as well but the point is slapping a different intake on any motor without adjusting the motor for the increased air flow is simply a waste of time.Here it wasn’t a waste of time. My only concern was how well the filter separated out not only sawdust and the obvious but the very very fine particles in the forest (especially from white oak bark) that is *everywhere* and covers anything laying around for a day with a fine layer of what appears to be dust… lumberjacks arborists chainsaw motor repair guys call particles like these “fines”And the fines are of concern because they’re BAD for the motor—depending on what the fines are made of (metal shaving fines or quarry dust fines are different than say for instance fines from something very soft like IDK for the sake of argument let’s say cotton candy (there’s no such thing as cotton candy fines AFAIK but it’s an illustrative example) or fines from very soft wood like pine for instance are of no consequence or very little consequence.The bark on a 300+ year old white oak tree is so hard and collects so many other particles in it I’ve seen sparks fly off the blade cutting through it before—not often, but I’ve seen it (and I’m not talking about spiked trees or nails… I’m talking about just the bark!) and fines from that stuff = real bad for your expensive new saw.So the punchline: these little $5 filters worked GREAT. They even filtered out the fines!I carefully oiled the filter's using the liquid K&N filter oil (as opposed to the spray-on filter oil) because the liquid oil is much thicker.After using the saw for only an hour I pulled it off even though it wasn’t clogged and after brushing off the large sawdust bits on it with my hand I soaked it in warm water and dawn dishsoap. Then I rinsed it with low pressure hot water from the kitchen sink.I put the filter out the dry and let the bowl sit in the sun to evaporate because I wanted to see if this filter caught the fines. I could have dumped the bowl through a coffee filter or similar strainer but I couldn’t find one so that’s what I got.Of course I haven’t tested these over a long period of time. This is just a one day/one hour of use on the saw test (it has an hour meter on it). I suspect these little filters will fill up more quickly than larger filters but for any small-motor high maintenance machine I carry a freshly oiled spare intake filter in a ziplock bag with me in case the one on the saw or the little dirtbike or whatever needs service so I can just swap it out and clean the used filter at my leisure and not need to put the machine out of commission.Attaching a video showing the fines in the bowl after most of the water evaporated out…EDIT/UPDATE: I bought a second pair of two of these filters and one of them was very clearly NOT sealed to the flange that is supposed to be put over the intake and clamped to the motor.And then I inspected the filters I have from these guys—four total—and then I inspected one of my K&N filters and see that the construction of the flange mounts are completely different—the ones I’m reviewing have a “snap fit” type construction where the flange snaps up snug into the filter pod. K&N is molded plastic one piece flange/filter assembly.The problem of course is leakage between the seal where the filter flange meets the filter element—if air gets in through that it completely bypasses your filter entirely. So… you can take your chances. For the price you could just buy a bunch and keep the ones that seal until the seal fails. I suppose one could take a sealant (like shoe goo is a surprisingly robust and effective glue/sealant) and lay a bead between the filter element and the flange and wait the 24 hours the directions tell you to wait until the shoe goo dries and you’re in business. But I’d make sure to do that BEFORE you apply any oil to the filter because even shoe goo is going to have a hard time attaching to rubber that is covered with oil. Even after it’s washed off there is always some trace oil remaining.Anyway… for YOUR application this may or may NOT be a concern. But that’s my experience with these little guys. And I *really* wanted to like them. And I’m still really impressed by how well the filter element does its job of filtering fine particles. But that seal… yeah… I’ll have to think on whether I want to go to the trouble of trying to seal them with shoe goo or whether I’ll just go back to foam uni-filters or what…

Good quality

While these are great quality THEY DO NOT WORK ON A MINIBIKE OR GO CART SLIDE CARB SETUP. They are too small for that application.