SUNDERWELL 40cc Mini Dirt Bike, 4-Stroke Gas Bike with Front Fork, Shock Absorber and Soft Seat Cushion, Max Load 165Lbs, Pull Start Cooperate Disc Brakes and Up to 19mph (Green)

When I purchased this dirt bike for my daughter it said 50cc but it actually states 39cc on box and19 mph. Verses 25 very miss leading, I would have purchased something different.

Great learner dirt bike for young kids. My 8 yr old loves it and doesn’t ever want to get off it. The bike is built quite durable and is very fast for such a small bike. I was able to get up to 21 mph with me riding it and I’m 5’ 10” and weigh 190 lbs. I highly recommend this for a kid looking to get there feet wet in the world of gas dirt bikes.

Great starter bike for my 7 year old grandson. Seems well made for a Chinese product. The seat is not soft but ok for a kid. Love the disc breaks on front and rear. Also love that all the hot areas around the engine are covered with plastic. Shipping was fast for me. The first one I ordered, different bike and supplier, didn't tell me until I asked a week later that they did not have it in stock. gave me 5 days left to find another. Glad it happened as this one is a 4 stroke, less carb issues in my opinion than the 2 strokes, and this one came in 3 days after ordered. Very impressed and saved my grandsons Christmas! One issue I had on assembly was the front caliper bolt was on so tight, I had to use vise grips to loosen it so that I could install the second bolt because it was bending my Craftsman allen wrench. It comes with one bolt installed and the caliper tilted up for shipping. So far it starts pretty easy however every once in awhile the puller doesn't engage the engine. Not sure if this is going to be problem in the future or not. But for me I push the priming bulb 4 times, close the choke and it starts on the first or second pull. So far very happy with it.

Bought this product for my son for Christmas and it does not work. Upon trying to crank it the motor sounds tore up! Amazon does not accept returns on this and you cannot contact the company. Please save your money.

Great little first bike. Our 10 year old (4ft4, 56lbs) bought this. We wanted something a little smaller since he has never rode a dirtbike. It’s not as little as I thought and actually fits him nicely. He is able to pull start it. There were a few pieces (nuts and a bolt) loose in the box but thankfully everything was easy to put together. He’s been riding it for a few days and his confidence is definitely boosting. I am 135lbs, 5ft2 and wanted to try it out. That little thing can get some speed to it. I would say so far it’s worth every penny!

I not 50cc it is 39cc according to label on the engine. Started on 2 or 3 pulls, run ok with choke on 3/4 the way. It has carburetor problems with no adjustments , I let it warm up for more than 10 minutes . Will not run without 1/2 to 3/4 choke expect at high throttle. The bike fairly well built . Very loud, really does not have exhaust system, poor design. Would not recommend. Look for one that has a exhaust pipe and muffler.

The pull starter broke right away. I was able to fix, but broke again while we were out on a ride leaving us stranded. The build quality is what you'd expect but I took a chance on it thinking it would be an ok learner bike. But when the handle bars become loose mid ride it ended up being a safety issue over poor workmanship.

My grandson loves his little dirt bike and never gets off of it!