4stroke

I've been searching for the parts to remove the Huasheng 49cc 4 stroke Rev limiter (some call it a governor I believe erroneously). The process to do this is detailed in a few threads here. One from a long time ago that I cant find and a more recent one called something like Ungovern Huasheng...

The first time started my Huasheng 142f 49cc 4 stroke motorized bike, it ran perfectly just like I wanted to, the idle was super smooth and very quiet. But when I actually used it vibrated A LOT. I did some research online about it but I found nothing helpful that could answer my problem. Now...

I got asked how I get my bike to 4200rpm with a cvt @ 42mph in my videos with a 78.5cc 4 stroke~ Here is the setup!

So, I recently bought this kit: https://www.gasbike.net/collections/bicycle-engine-kits/products/79cc-monster-90-bike-engine-kit-complete-4-stroke-kit I threw it on a brand new beach cruiser and it was riding fine for a day or two. Then the chain tensioner came loose and broke my spokes. (I'm...

I have a haushengtaishan 49cc 4stroke. I was having carb issues so I went to a nt carb my question is what do I do with the hose that went from breather box to engine

So I have the 142f engine and my rear drive sprocket sheared off loosing my key and nut I was wondering if I could just find one at a hardware store or if anyone knows where to get one. Also when fixed how to keep it on.

Hi I have a 49cc huashengtaishan 4stroke up until the other day it was running good but all of a sudden while I was accelerating it just quit going. The motor never died and if I play with the trottle I could get it to act as if it was gonna take off. If I WOT it dies. I have drained the gas...

Hay has anyone bought a friction drive 4 stroke kit from bike berry? What are your thoughts on it? Im primarily wanting one from a 2 b without much trouble. I was gonna buy a scooter from a buddy of mine but it aint working out. He wont contact me so my next option is a 4 stroke kit. Any thoughts?

Hey there, I'm looking to make my first build on this frame http://www.gasbike.net/collections/all-bike-frames-wheels/products/copy-of-gasbike-aluminum-bike-frame-with-built-in-gas-tank and i want to put a 4 stroke on thats over 50cc because I live in a very hilly area. I'm looking at the...

Hey guys, Im new posting here but a long time lurker. I have built a fat tire motor bike but have difficulties with getting it to actually go with me on it. I am large in stature but low in weight (6'4" @ 170lbs) I have posted many pictures of the build plus added a question in this forum...

Hey! I am building a fat tire (mongoose dolomite) custom frame and gas tank bike. My mandatory specs were that it had to have disc brakes front and rear, 4 stroke motor, and shift with no manual clutch (shifter kit from Bike Berry). The problem I am having seems to be that the 49cc motor (also...

Hello, first time posting here, and apologize as I am sure some of the questions I am about to ask have been asked before.. I have built 3 different China girl kits (as I am seeing them referred to here) on three different bike styles, the one where you buy the whole kit and essentially bolt it...

I'm Joegrind from San Diego California. I've made my first 4 stroke motorized bike its powerful and very reliable I had 8 different 2 stroke bikes but this 4stroke is motor so far hands down... If any one wanna link up and ride let's go .we.

gonna try a little pole on what types of bicycle engines most of you have. if you have more then one type choose whichever one you use the most. just click on the box above to make your choice