I Made My Bike EVEN FASTER (Crazy Speeds) 

Nice vid 👍. you'll be surprised how fast you can go on these engines if you do the right things, i have a chainsaw hybrid bike that goes 50mph, its a chainsaw cylinder adapted to a motorized bike bottom end. However you can still get some crazy speeds on the stock cylinders, consider porting and a real mz65 exhaust with a better carb.

Nice editing

uhh....strictly trying to be helpful here. but, that oil mix ratio for break in, and after are off. by a long shot. During break in, you want to run more oil than after. I used 25:1 for beak in, and 32:1 beyond that. i ran 40:1 in a BT80 and im pretty sure that could have been a big factor in its death. that's just not enough oil for the sloppy tolerances of our china doll engines. sure, if you're riding a puch or Motos moped they run stuff like 40:1 and 50:1 but those engines have MUCH tighter tolerances and better fuel consumption and lubrication for criticcal moving internal parts. again not trying to bash, looking out for a fellow motorbiker. much love tho, good video and keep up the good work!

Way meaner. Make sure to drill extra holes in your air filter cap

What i did with the muffler part you was holding i removed the baffle pipe inside and it gave it a mean streak to it and gave it lots more speed i just haven't tried it with a smaller sprocket on the rear tire plus i changed the spark plug they give with the engine to an E3.32 spark plug and it runs great

You’ll need a steering stabilizer at about 43 mph. And definitely get an expansion pipe exhaust you will not regret.

My stock 66cc with no mods tops out at 38 mph

I have 50 cc and I'm going that fast without any upgrades

Bald tire my dude. Get an expansion chamber.

u do relize 35.1 is richer than 40.1 when breking in a motor u put more oil like 32.1 or 35.1 then after break in u lean out the gas putting less ould cause it already broke in i run 40.1 witch is where u started with i would definetly not recomend that lol 32.1 is 4 oz like u said 35.1 is 3.7oz and 37.1 is 3.5oz of oild and so on so u got it completly backwords

Hello , you like a review of you video?

I run no tensioner