Product: Ketofa 110cc 125cc 150cc 200cc Gy6 Moped Scooter Atv Dirt Bike Motorcycle Air Filter 42mm
Overall sentiment: positive
Customer reviews:
Easy to install this air filter does what it says, its small enough to fit on most GY6 scooter carbs. It came in just a matter of days after order was placed. great value for the money. air filter will give your scooter or ATV carb extra air intake. 
 Worked great. Installed easily. Put oil on it and I bolted it up. Runs great and looks awesome! Thanks guys! 
 Works, already has that red air filter oil in it.
Small.

I figured I did not need it on my taotao ATM50, however, if my tao ever breaks the airfilter, I'll exchange it with this one! 
 A+ 
 Excellent product! Delivered as expected, when expected... 
 wow nice 
 Great! 
 good 
 put on my 50cc scooter and eliminated all the plastic junk... 
 Seems fine, & it's cheap. Doesn't seem to fit tightly, maybe I just measured the port wrong (straight on the carb something like 45mm) 
 Very pleased good deal 
 i have not install it but it looks great 
 works great 
 I pitched out the be stock air filter and replaced it with this one. Perfect!! 
 worked awesome 
 I love getting rid of that huge nasty stock one! 
 looks great 
 get little filter if your upgrading you engine highly recommend. 
 Fit my cart. If you have the Xmachine 125, you may have to wedge it in there, but it will work. 
 Cool little filter.  Seems to work good 
 works very good i put it on my 15o scooter 
 fits perfect 
 Better than that stock airbox on my little GY6 clone engine. 
 Excellent. 
 great 
 Great item 
 Recieved on time , it mounted good , works as described 
 I made a boot out of a piece of 1.75" radiator hose that had a curve in it. And connected the filter to it with a piece of 1.75" conduit, it works great. 
 fit great scooter runs well now 
 Fits perfect on my 150cc carb. Made my scooter a little bit faster. Also has a great sound at wide open throttle. 
 Looks good, but would not fit becaus of how my engine is located --not the fault of the filter 
 great..shipped fast 2 
 Great item 
 works great on gocart and some 4 wheelers 
 Fit on carburetor, good product and fast shipping 
 These arrived well within the date that was specified that they would be delivered in. They appear to be of good quality but I have not tried them out yet. They come with a hose clamp and ready to be attached to your carburetor throat. 
 it is an excellent product,  and it fits perfect,  and  it adds more power to the  bike,  would  advise  buying it 
 The air filter was of Good Quality.  It reminded me of and looked just like the K & N air filter on my diesel truck.  I ordered another one just like it for my other scooter.  I highly recommend this company. 
 I installed it with a new carburetor after about 2 weeks, it just came apart.

Edit: a new filter is being sent and I will test and update review if new filter performs well. 
 works great 
 Didn't fit 
 fast shipping, great product 
 Great item