125CC 4-Stroke Engine Motor Kit, Single Cylinder Air-Cooled Motor Engine for Honda CRF50 XR50 CRF70 Z50R QR50 Dirt Pit Bike, Engine Kit with Manual Clutch and PZ22 Carburetor

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.

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.

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. LolOverall 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

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.

My son has not gotten off the bike since we put the motor in

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.

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.

The media could not be loaded. I put this engine in a CRF 50 clone frame fit perfectly first and second have a lot of torque third and fourth pretty quick TopSpeed around 55 stock carb kind of trash. stock intake threads, stripped after a little bit of pressure but overall fun and cheap. I’d recommend.