2-Stroke 49CC Bike Engine Motor Kit, Gas Petrol Motorized Bike Bicycle Engine Set Scooter for Pocket Bike, Mini Dirt Bike, ATV or Scooter, Petrol Gas Engine Single Cylinder
Condition: New
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30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Sep 11 – Sep 13
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Size: 2-Stroke 49CC Bike Engine
Features
- Main ParametersCylinder Numbers: Single cylinder; Gas-oil Mix Rate: 25:1; Bore: 44mm; Start Way: Recoil pull start; new style recoil,easy to pull start; Cooling: Air forced cooling; Sprocket Size: 14 teeth fit T8F chain; Spark Plug Size: L7T L7TC
- Complete SetThe bicycle engine kit is compelte with high performance cylinder head, plug, powder coated metal pull start, air filter and 14mm carburettor,balanced crank, balanced flywheel, ported piston windows, uprated cvt transmission unit.
- Premium Performance49cc engine, easy to reach speed up to 40mph according to your weight and terrain. Unleash your inner speed whether on the street or on an off-road adventure.
- Widely ApplicableThis engine set can be widely applied to a variety of small vehicles, including 2-stroke pocket bikes, mini buggies, ATVs, and scooters. Whether you are roaming in the city or traveling in the mountains, you can easily handle it!
- Quality AssuranceWe have a strict quality assurance system, and products are tested before they are put on the market. If you encounter any problems, we will provide the best service and give you the most satisfactory answer!
Description
Specification:Cylinder Numbers: Single cylinderStroke: 2-strokeGas-oil Mix Rate: 25:1Bore: 44mmGear Box Reduction Rate: 3.1 : 1Displacement: 49ccStart Way: Recoil pull start，new style recoil,easy to pull startRecoil Starter Material: New style easy pull starterCooling: Air forced coolingSprocket Size: 14 teeth fit T8F chainAir Filter: Performance high flow racing air filterSpark Plug Size: L7T L7TCPackage includes:1 x complete engine motor1 x pair of Grips1 X Throttle Cable
Manufacturer: LIYUANJUN
Brand: LIYUANJUN
Manufacturer Part Number: AC-YCZYQ-2427
Date First Available: August 28, 2023
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sep 11 – Sep 13
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 4 Stroke Racing Engine
Fantastic engine and customer service the engine showed up early and was in perfect condition besides one cable that got pinched and cut but I messaged them and they refunded me some money to purchase a new one. Can't complain with that, thank you much! And for anyone wondering how to wire the engine I've attached a picture from the Internet on how it's done.
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Reviewed in the United States on May 17, 2025 by Logan T Logan T
Size: 125CC Engine Motor
Great little engine! Fast shipping! Got this as a replacement for one of the kids little off-brand atvs. Bolted right in. Sounds great! East to install. There was no instructions for the wiring harness so there was a little trial and error hooking it up but works great. Starter solenoid died after cranking it over less than 3 times trying to get it started for the first time but luckily I had the one off the old harness. Get a better air filter. The one in my kit was just foam and already ripped and crumpled. Oh and the shift lever is unusable in my application. I honestly don't know what it would actually work in. Lol Overall is it perfect? Nope. But I still have it 5 starts because, the shipping was really fast. Faster then expected by 3 days! Engine is nice. Sounds good. Direct bolt in replacement. Some of the accessories that came in the kit were a little chincy and unusable. Overall it's a great deal
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Reviewed in the United States on March 20, 2025 by laura
Size: 125CC 4-Stroke Motor Kit
UPDATE- they did reach out and sent me a new motor free of charge. I don’t have much time on the motor yet but so far it hasn’t catastrophically broken like the other one did yet. I’ll update again once I have some more time on it. Updating to 4 stars for surprisingly good customer service. DO NOT buy this engine. I’ve probably only put about an hour total on the engine since I installed it, and the bottom end case cracked already and it doesn’t seem to be repairable. I didn’t have high hopes given the price point but I decided to go out on a limb, and unfortunately I wasted my money. It’s not worth it, spend a little more and get a higher quality engine or you’ll be buying another one soon. Would rate 0 stars if I could, hopefully my heartache saves the next person.
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Reviewed in the United States on April 4, 2025 by Terry T. Terry T.
Size: 125CC 4-Stroke Motor Kit
I ordered the 125cc engine for an application listed in the description. There are major safety concerns if installed. Brake lever is not usable, foot pegs are not usable, kick stand is not usable, intake does not line up, exhaust does not line up. I tried to return the item over my safety concerns I have received nothing but a run around and told I would have to track the return and notify this seller that it was received at their warehouse then I could request my return and pay restocking fees and shipping. I received the item 26 hours after purchase, made to wait 72 hours for return label to then find out I would loose additional money to shipping and restocking. Please do not purchase from this seller. They purposely make it very difficult and not worth the time or money to return rendering you stuck with the purchase. I filed complaint with Amazon and waiting to hear back. Also do not buy any Protection plan because it is worthless and will do nothing to help you in any situation.
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Reviewed in the United States on May 15, 2025 by erick hopkins
Size: 125CC 4-Stroke Motor Kit
My son has not gotten off the bike since we put the motor in
Reviewed in the United States on May 18, 2025 by Katherine
Size: 125CC Engine Motor
Keep your old motor, you'll need the spare parts. So far I've used the old oil pan (new one damaged in shipping) and the starter solenoid (burned up before the engine started the very first time). Also the shift pattern is backwards for most. Down to upshift and vice versa. I believe that's typical for put bikes, but weird for a quad. Motor runs ok so far, shifting is rough but may be just breaking in. You get what you pay for though and this rig was very reasonably priced. I would suggest shipping insurance though if you don't have a spare motor lying around.
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Reviewed in the United States on May 25, 2025 by Noah
Size: 125CC 4-Stroke Motor Kit
We ordered this motor to do a rebuild for the second time me and my boys 3, and 5 years old but right away out of the box we had issues got the motor put together and tried to fire it up but we were not getting spark at all we tried everything even replaced the stator plate spark plug coil and ignition switch then last but not least the cdi and we finally got spark but it still wouldnt start and then i decided to use my old carburetor from a previous motor and two weeks after buying it we finally started the motor and took a drive yesterday afternoon now i will say we did purchase the premium 4 year protection plan but we decided to take the time ourselves and work this brain scratcher out ourselves but iam wanting to have my stator plate and carburetor replaced due to it belonging to my other project bike but this motor was garanteed to start with everything it was shipped with but all in all iam pretty impressed great motor excellent performance now i will say the first time my boys an i built this bike it was stolen from us twice in one week we got it back both times with our own hard work but this bike is a family hobby for me and my growing boys as we are all 3 of us new to the power sports world this being our first bike but second time we built it.
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Reviewed in the United States on March 14, 2024 by Pauline and dallas
Size: 125CC Engine Motor
The media could not be loaded. It came a little low on oil. Wiring took a little while to figure out. This was a special build so I didn’t have some of the safety relays that would be on an atv or cart. Engine started first crank sounds great and runs good out of the box. I used it for a winch motor on a trailer that will be hauling wood from 200 feet up a steep hill.
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Reviewed in the United States on March 26, 2025 by Baddad