Are 2-Stroke Bicycle Engine Kits worth it? Let’s find out!

Are 2-Stroke Bicycle Engine Kits worth it? Let’s find out!


Lots of requests for testing on 2-stroke engines. A 2-stroke bike seems like a great way to performance test alternative fuels and additives. I purchased the 2-stroke bike kit off of Wish.com, but they are also available on Ebay. Hope you enjoy the video and thank you very much for supporting the channel! m

100 Comments on "Are 2-Stroke Bicycle Engine Kits worth it? Let’s find out!"


  1. I had 4 in the past years ago motorized bikes these Engines and kits dont last to long it's best to just buy a Real moped are 50 cc scooter Also the kits messes up your Back Rims and Bend them Because of the motor Bicycles was not meant to have Engines and go high speeds

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  2. Bought one of these kits years ago, was made in China then sent to Japan for new bearings, was sold from California vendor. I put over 25k miles on this little kit, only changed a few tubes. Good times, bought and built one with my dad before he passed away, many miles of smiles from dad.

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  3. Apparently some <cough>CENSORED<cough> believe they should swim against the stream and instead of electrifying their bikes, or replace their mopeds with e-bikes they purchase 2-stroke bike conversion kits. YES 2-STROKE! I kid you not. It's as if science stood still the last 50 years. Goddamn. There truly is no end to human stupidity!! (And let's not even mention safety here).

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  4. So what is the best two stroke bicycle motor out there on the market right now then? I've had a few but they all seem to wear out prematurely. I use Maxim 927 pro series 2 stroke oil.

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  5. If you had no prior knowledge of small engines this build would have been pretty challenging…

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  6. for one your first mistake was buying a cheap engine. If you want a quality bike you have to buy a real beach cruiser bicycle with a well welded frame. if it is not welded to your liking then touch it up, with a weld of your own.[ reinforcement] then buy a real engine that has been properly machined. then it takes a lot of time and money to find the right parts, to make a good bike. you first must make sure the frame can take the horse power the engine has to offer. did that ! now you must match the engine to the frame with a real motor mount system. i will let you figure that out as it took me a long time and money to get there.[vibration]. HINT when you see something on e-bay or amazon buy it now, you may never see it again. bike in place and motor properly mounted, we move on to exhaust. the u pipe in the exhaust must be properly fit by opening the inside dimensions of the pipe by spreading the ID, figure it out bro. [ mechanical skills required ] by the way im using voo – doo exhaust that has been bored out. with expansion chamber. now you focus on intake system. the average carb. is 19mm. but if you want real power then i say run with shit that puts that in the dust with a 21mm. carb. or better yet a 28mm carb.chrome plated. then you add a reed valve kit and tap into that with a v- valve that supplies a air boost kit and a nitro kit. i also suggest a 1.5 gallon gas tank. or you may have to fill gas more then you would like.

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  7. Great review!
    I appreciate you showing the dent, but I laughed to myself thinking about a hypothetical super-anal person who ordered a two stroke bike engine from China and was surprised and pissed that there was a dent in a thin-walled tank. 🙂

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  8. I bought a bike with an 80 cc kit already installed. I've ridden maybe 100 miles on it (so it probably has 450 miles total on the engine)…have enjoyed it a lot…but yesterday…I tried to take it out…..
    started peddling to start it….it was starting….but then suddenly stopped in it's place…. locked up and I flew off head first….I was lucky to have not hurt myself worse than I did.
    Can anybody tell me ….why it locked up….I have the correct oil to gas mixture….
    i mean it's totally locked up….I can't even turn the back wheel….or pedal it….it's locked….
    What can/should I do? ……and I'm not a mechanic….but I will try to fix it …if someone tells me what I should do…
    please help….

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  9. I started to get really get diapointed by my 2 stroke kit back then because of its constant break downs, cost of fuel, and leaving me stranded in the middle of nowwhere. I got a kit hoping i can beat the cost of public transportion because it started cost just as much as operating a motorcycle but definitely not worth the headache of running maintenance.

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  10. Thanks for the info I'm buying one from a friend of mine. Never rode one before but after watching your clip I'm excited and well informed thanks

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  11. I have one of these – totally illegal in the UK but so much fun!- same engine as my Honda Generator

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  12. Well , you checked head bolt torque when you removed the head but WHAT IS THE HEAD BOLT TORQUE SPEC SUPPOSED TO BE ?

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  13. I built my own with an old Tanaka Bike Bug 49cc bike engine kit and got it a consistent 38mph, only problem was spokes coming loose and then bent rims. Went to a dual wall rim with stainless steel spokes with some Loktite on threads and that fixed it. The drive was a cog that was friction driven, the engine was on a spring loaded pivot and started when engaged to rubber. I had guys chase me down to talk about it, so fun. I sectioned a RM250 expansion chamber and it got a CrAzY powerful powerband that would kick in at around 15mph, really screamed 🎵

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  14. I buy DF RTX 49.7cc it a clone honda cub c90 and having trouble riding it because i wear knee brace! I want know there way start ride this scooter because can`t move foot pegs up & i stand 6' 1" tall my doctor want start riding bikes.

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  15. can these go up hills fine? i plan messing around on one of these on my street and there is a big ish hill that i would need to get up. also if im not worried about noise do i need the exhaust? i hear the ones with these are really restrictive and that its good to either remove the baffle or to just cut it back a bit but why couldnt i just not use the exhaust at all?

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  16. You should get a high performance engine with Reed valve intake and high performance carb and head with expansion chamber exhaust and see how fast that goes… anyways I love the videos I've watched allot of them keep up the good work

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  17. Here's a tip. Wrap some innertube rubber around frame where the engine mounts to frame,double up the nuts so it will stay tight.Helps cut down the vibration.

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  18. Who the heck dislikes your vids? I personally think they are amazing. My dad always distrusted brand name hoop la, and you break it down into controlled testing. Much love

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  19. I bought one of these a few months ago from BikeBerry, put it on an aluminum frame mountain bike. Carbeurator kept leaking, had the bright idea to raise the motor up and use the rubber kit that's for that purpose. Bad idea, vibrations make it nearly undriveable, and eventually one of the connector bolts snapped off rendering it not completely safe to reinstall and operate. Solved the brake problem with a dual brake lever, but the rim brakes quickly wore down to nothing. Going to buy a steel frame mongoose with disk brakes and a slightly more expensive engine. I am NOT mechanically inclined but it was easy enough to install and maintain for awhile.

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  20. I would recommend building one of these to anyone. I built one that I have had for around 2 and a half years. The only things of consequence that broke early on were the actual throttle ( the fake chrome end ones)and the stock CDI. I've had the usual punctures and cables break (I now carry a spare inner tube and a cable, but shoelaces have got me home). The number one thing that causes breakdowns is the spark plug. I recommend carrying a spare and a scrap of sandpaper. Before I even put the kit together I got a proper sparkplug cap/boot and a decent sparkplug. The plug makes a lot of difference. It takes very few tools to work on these engines and they are extremely basic and easy to work on.

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  21. Same kit I had on my bike, it took me everywhere! To work, friends, and it was fun in mud too 😁, until someone stole it😢.

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  22. I like you carisma very nice ,you help a lot of people don’t have car and they have to walk or take a bus and that is a pain in the ass good job bro

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  23. I had fun putting mine together too. Mine didn't come with a frame adapter, so I made one. Also, I put the engine on a bike with coaster brakes, which worked out just fine. Very fun, and more powerful than expected.

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  24. These kits are great if you are handy but if you cannot adjust and repair yourself its just not worth it, because they are in constant need of repair and adjustment.

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  25. Im turning 16 in like 10 days an this is going to be my Vehicle of Choice. I don't want to get my drivers licence because that takes having a car and needing to pay insurance on it. I also live in florida so I'm not totally sure if these are legal for me.
    Also the bike im using is a combination of 2 roadmasters that my dad and me found, it's going to be an amazing project.
    And thanks for this great review on this video and that 4 stroke video.

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  26. I know this is an older vid/ I have seen it before. Could/should have double nutted that motor mount bolt to remove it without damage.Just one idea, IF you have 2 of the correct size nuts which should have come with the kit…

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  27. Seems governments all around the world are all becoming tyrannical. One cannot travel freely with all of the pesky law's these days.

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  28. I also bought this – it is great. however, I have one issue with carb. the float is taking in gasoline, so it just floods the whole engine with gas. I think a replacement float is not very feasible – might have to make one myself..

    any others with the same float issue out there?

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  29. That was awesome, I was just looking for these motors, I just wanted a cheap motor that I can use for rc, think this would be awesome lol

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  30. You have to love anyone that will take off the head just to look inside and note the torque/ lbs. needed for each of the four bolts caps. This person reeks devotion and would highly recommend him working for Consumer Reports. I believe they would beg to have you; your Resume would be your You Tube site / links and TYVM.

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  31. In case no one has mentioned it already break away torque is in no way equivalent to tightening torque. The torque on those head bolts would be I’m guessing between twenty six foot pounds and forty foot pounds depending on what they screw into.
    The tensioner would be better fitted to the top brace and pulling on the chain instead of the bottom pushing on it, safer too as it won’t slip and jam the wheel.

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  32. Why is a 2 stroke engine are less durable than a 4 stroke engine? Is it because they have less lubrication than a 4 stroke engine?

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  33. See. Buy Car. $500- $900. Then im Brooke all month.
    Next licence DMV. $52. TABS. ? $130. Insurance..$200. ? Why not? $200.. It's so screwed anyway..
    Should I fill the Tank. Always broke anyway.$70.

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  34. That's a Good Question..175 miles to a gallon
    The Original WIZZARD BICYCLE ..175 miles per gallon

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  35. I've been building and riding these things for years. For those interested, there are better adapters for the rear sprocket. The standard rag joint setup sucks and will end up damaging your spokes. I personally use the Manic Mechanic adapter that bolts around the hub.

    The frame I use is square tubing, so the standard idler/guide pulley stays put, but because of the stress of the chain, on round frames it is prone to being pulled into the rear wheel to eat some spokes and bring you to a halt. Get one that bolts to the bottom and upper arms on the back of your bike.
    Some people ride for speed. Take the bike fenders off if you do. Vibrations will weaken the mounting points, particularly on the front fender, and well, one of these lodging against the wheel is gonna be a bad time.

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  36. I had to do some MAD fabrication to mount one of these to a tricycle. I had to get a chunk of metal made that allowed that sprocket to mount to one of the rear axels at the middle. Had to cut away at a shield in order for the sprocket to fit. Had to eliminate the ability to use the pedals for anything more than a foot rest because the trike mechanism for the wheels to spin freely and change gears could not be salvaged in this build. Because of that, I had to buy a pull-string kit that bolts right up to the motor in order to get the thing started. At the end of the day, it works! Now my biggest challenge is finding a way to mount the drive wheel onto the axel in a way that it can withstand the torque the motor produces.

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  37. Just so you know, You cannot ride a bicycle equipped with an ICE of any size on British public roads. It can of course be ridden on private roads or private off road with the land owners consent. I don't know when it was outlawed because I can remember seeing them when I was a boy in the 50's/60's.

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  38. I was just thinking when I was riding my bike. It would be cool to put electric motor and a two stroke motor on it.have a bike that's built for speed Max out the two stroke motor shut that off and turn on your electric motor and go faster that's what I imagined sounds cool right?

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  39. Im a huge fan of Project Farm . just made a Exhaust that makes a 2 cycle as efficient as a 4cycle , it is very quiet, wayyy more power, .. My testing for a 52cc scoooter was 121 mpg in real world testing (was getting 80-ish?).. stop lights, slight hills, and playing with the full power at times. NOW 2 cycles can really compete with 4 cycle in all points. the power is amazing! all the way throughout the R.P.M. range ( it can lug like a diesel) to climb hills like it never could with a tuned exhaust… . unfortunatly I had to put in larger head bolts. it had too much power! 1.4 liter tank went 44.7 miles!

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  40. Wtf is a snow blower? Like a jack Frost prostitute? Honestly idk im from the south and really don't know

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  41. I really enjoyed watching your video…more video uploads please…
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  42. Thanks. For. This. Video. Laz. St block. Is. Amassing. Intention. And. Transpiration. Endanger. Thanks

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  43. I built a mini-bike with a centrifugal clutch a few years ago. I got a little over-zealous after I got the engine, drive and wheels installed (no brakes, yet but who needs em!). First run –thing fired right up – idle was set at like 2500 but how was I to know? Off she goes with me hanging on for dear life as I seemed to overlook the fact that a centrifugal clutch engages at pretty low RPM and doesn’t let go till you throttle down. Well… I can’t throttle down and no brakes of course! Got up to like 20 MPH in the back yard with no way to stop. I have like 30 trees in a 1 acre lot. After dodging trees, my house and the dog for like 2 minutes, I bailed and slid across the grass for like 10 feet. Wish I had a video – it was hilarious

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  44. We have built 3 of these and they are ball !! .. they have worked great for us. We use the Walmart Nel Lusso Mens frame and they look like an old motorcycle from 1901. We have about 200 miles on them an so far no problems. We have had to retighten some fastener but nothing broken. We did add disc brakes to the front (hydraulic bike disc brake) since the extra weight and speed (about 25 mph) needs a little more than the coaster brake on the back. We found some nice looking sprung seats and made some decals on a vinyl sign cutter with gold vinyl for the tank to make it look kind of factory.

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  45. Hi, found your video very helpful, I have enjoyed fitting but I had to use my skills to make the engine fit, I recommend to others not to rush this project and found giving the bike itself a sevice , greasing the wheel bearings excetra as you need a good base to start from, best regards Pete UK

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  46. I have a 1940s kit from Sears and the engine is bullet proof I have no issues at all goes to show how they made quality back then

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  47. Are they worth it? Ask the poor soul behind you who is forced to breathe the oil from that engine. I would love to see them all outlawed. Double for diesels. After a couple thousand miles the stench really nauseates you. Oh, and by the way, the carcinogenic fumes have been long well known to cause cancer. They have known this for decades.

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  48. 80cc not enough you need at least 200cc 4stroke for a big boy bike and Euro scooter transmission to convert some tourqe into speed. Finally get proper lights because you a big boy .

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  49. I got a smaller sprocket and mounted it to the actual hub not the spokes because they break a lot on the cheap bikes

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  50. Caution they are crap the company will not warranty them I blew the head off and crack the intake valve within 30 minutes company will not back you… go Electric!!!

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  51. These engines are worth it if you properly break them in, and consistently mix the oil/gas mixture CORRECTLY.

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  52. i have an idea… just buy a dirt bike or a cheap moped… no worry of installation or modifications for shitty parts. and completes the same purpose and more! a bike is a bike.. if youre putting an engine on it just google some local cheap mopeds

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  53. Your a fucking idiot, you don’t zip tie the chain guard on you use the metal clamp that comes with the kit ! Your not to smart..

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  54. I built one of these and the manufactuer said 20:1 for break in..it was such a big I went up to 30:1..now it is broke in and I run 50:1 so much better lol

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