

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.
Desertcart purchases this item on your behalf and handles shipping, customs, and support to Brazil.
🏁 Race-Ready Carburetor: Power, Precision, and Performance in Every Ride!
This Racing Carburetor is engineered for 2-stroke motorized bicycles with 49cc to 80cc engines, featuring a 19mm bore and an integrated air filter for enhanced airflow. Its aluminum construction offers durability and lightweight performance, while the adjustable idle screw ensures smooth operation. Designed for easy installation without throttle adjustments, it’s the perfect upgrade for riders seeking reliable power and cleaner intake, making your bike stand out on every ride.






| ASIN | B07989QWFH |
| Best Sellers Rank | #83,298 in Automotive ( See Top 100 in Automotive ) #311 in Powersports Carburetors |
| Brand Name | MaySpare |
| Compatible with Vehicle Type | Motorized Bicycle |
| Customer Reviews | 4.0 4.0 out of 5 stars (1,947) |
| Exterior Finish | Aluminum |
| Item Dimensions D x W x H | 2.89"D x 3"W x 4.8"H |
| Item Part Number | US-49CC-R |
| Model Number | US-49CC-R |
| Recommended Uses For Product | Motorcycle |
| Specific Uses For Product | Performance,Power |
| UPC | 729043161317 729043161331 |
L**M
Best for the Price
I've been trying to fix up all my toys for spring, ended up needing a carb. I looked around and this is the best for the price. I have likes and dislikes, Its starts super easy, the choke doesn't vibrate itself out of place, it is a good increase in filter size, and it doesn't stall out at low speed as much. Its jetted a little low for me, my top speed is 15 mph lower and I'm now at 22mph. For installation its pretty simple there is no need for instructions, just use the adaptor and pipe tape (tape up the inlet tube and put adaptor over and its good to install). AND DON'T OVER TIGHTEN IT, most people who own these bikes don't have mechanical experience and they don't realize no matter what your engine and all parts for it are probably Chinese so you need to just get it snug. And keep your old carb you might need to switch the cable holder.
J**N
Works great!
Arrived just as described. Everything works and it started up immediately way easier than the stock one. It has a really nice idle as well. Great carb. Not sure the power difference yet because I haven't gotten to ride it more than a couple of minutes. Works great though. I ordered the intake elbow to account for the bigger air filter as well. That's why you don't see it on. Fit. Perfect.
L**S
Good carburetor
Assembly wasn't too hard. The paper gasket between the carburetor and the throttle assembly popped out when I took it apart, but it came back together alright. There initially wasn't enough clearance between the stock intake pipe and the seat tube of the bike for the carburetor + air filter so I had to reseat my engine with the carburetor on it so that it would fit. The fuel outlet from the gas tank was on the opposite side of the fuel inlet on the carburetor, so I had to snag some extra hose to get it to go across. Compared to the stock carburetor that came with my engine, this one idles much smoother and doesn't stall. I can't say I've seen a gain or loss in power compared to before, my engine still needs to break in. This was one of the, if not the, cheapest option out of all the listings for this carburetor since it does not come with any other pieces other than the carburetor and the air filter. I'm not dedicated enough to these engines that I'd go and replace the jet in the carburetor, so the right jet size is up to you. I haven't seen any problems with the stock jet myself.
C**S
Not worth the money
Unfortunately it was raining when I received the new carburetor. So I never had a chance to try it before. I ran out of time to send it back. when I first opened a package it smelled like cigarettes. It was extremely hard to assemble. No instructions I had looked at it for about an hour to figure out how it worked. There was a broken gasket between the throttle connector and the body of the carburetor Don't know if its leaking air into the carburetor from that point. I tightened down the 2 screws tried the throttle it was stuck I disassemble the carburetor and found that the spring wasn't mounted properly I didn't run the cable through the spring. My fault. Had to change the throttle handle there was too much Slack in it. i had extra throttle handle i hooked it up and at work right. Lost power. Better gas mileage. Top end was slower acceleration slower, no power going uphill. Don't know if broken gasket has anything to do with this too late to send it back stuck with it
A**K
great action
i love the way the carbonator hooks up the throttle
5**5
choke is cheap and doesnt always stay, filters are impossible to find
choke is cheap and doesnt always stay when starting, filters are impossible to find, stock filter will get lost or rubber will fail and filter will fall off. ended up taking a mason jar lid, some metal zip-ties and a piece of foam filter material and ended up making my own filter that's stayed put with no problems. besides that bikes run great except for the issue with the choke.
J**.
Great item
Simple to install
J**Y
Good
Ordered wrong part
W**M
This has turned into such a fantastic hobby. Ive been riding dirt bikes since 4 years old couldn't even touch ground when on it. Anyway i thought i would try an engine on a mountain bike. Wow! I couldnt believe it. Just a 66cc china toy motor on a 26" Huffy from 1989. After all done with some modifications of course. Motor ran ok but i wasnt able to get it to idle on its own. Before i even thought about the the main jet I ordered and installed upgraded to HP carb. Right away noticed a difference and motor idled on its own with no tuning. But soon relised i had very poor high end rpm. So i found out from the Awesome people that do videos on you tube the new carbs come with a jet not right for the climate hear in ontario. Long story short ordered 5mm jet set and installed a 68.. had a 72 i believe.. took it out for a run and it wound right out to max hp and cruises nice at 32 kms an hr..bike runs fantastic. Since then i discovered that the NT carb can use same jets and works good to.. Definitely recommend the Hp carb for the better filtering and easier air flow.. little 66cc motor really puts out. Ill add pic when I get home..
D**C
Do not but this product it is junk. I bought it and used it the clamp attached to the carb broke off making it unusable.
R**E
Used this over stock for clearance issues. Only main jet adjustments no mid range so can get it to work well at low speed but not high or the other way around. Be prepared to do a lot of main jet changes.
J**R
It’s a good carburetor but you will have to buy a pack of differing sized jets. I like the automatic choke.
H**S
Right after I put that carburetor on and one for a few drives the carburetor snap right off and I can show you how it did it it broke off at the where you tighten it up at I'll show you pictures of it
Trustpilot
3 weeks ago
2 months ago