Enhance Indoor Air Quality with uni UP-4112ST Air Filters Review

Got this for my son's 2005 Honda crf50f so I can clean all the residue from the stock airbox and put it straight onto the 1" Inlet from the stock Keihin carburetor stuck bike came with. Works flawlessly.

Fits snugly, do not overtighten. I had to raise the needle in the carburetor throttle to the middle of the needle. Now it works very well. I've read a lot about carb damage after installing this filter. Try the needle first.

Don't buy from them. I ordered a universal air filter and they sent it to me, but it didn't fit my bike. Sent back for a refund and charged me a 50% restocking fee but never mentioned when asking for a refund. I hate companies that do things like this. If it doesn't match the bike, don't say it fits the description.

So I bought this for my CRF 50 with the 88cc big bore kit. see he's breathing a little better. And I noticed a nice difference in throttle response. And it also makes a nice rough sound. My bike also has a larger Mikuni carb but it fits well but it was a bit tight but I think it's good. Generally no problems, excellent quality. Highly recommended!

I ordered this with a piranha pit bike engine and manual clutch by selecting the buy all three option and it is the wrong size carburettor. I should have researched the sizing before ordering but you might think that if it already matched other items then it should fit these items. that's why it got a bad rating from me. Otherwise great filter 🤷‍♂️

Installed on my stock 2000 XR50 carburetor. Fits easily and stays on the carburetor. It sounds ridiculous, but the Two Brothers filter I bought that looked exactly the same popped out of the venturi when I tightened the clamp. and gave a slight power boost in the upper speed range. No refilling necessary. Have fun driving!

is my old one. Exactly the same as the last one. It also won't fit the XR/CRF-70 pit bike carburetor, no way. I have always trusted UNI foam air filters on all my off-road machines and they are the only ones. I use and I prefer. If you see dust or drive in dust, you are definitely better off using a UNI air filter than a crappy K&N style air filter designed to destroy the engine. I absolutely recommend this product to everyone.