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ROKON two wheel drive motorcycles are not really supposed to be fast, but who doesn't want more power?! I was not impressed at first until I threw it in low gear and climbed a 5ft steep pile of dirt from a dead stop! In that moment I realized that this was the crawler of dirt bikes and I fell in love. But if you could have a crawler with a little more power and speed, wouldn't that be the best of both worlds? I think so. These things are cool enough as slow crawlers but if you want a modified, quicker Rokon, this video should give you some ideas as to what is possible.

I was hired by the owner of this ROKON to double the horsepower. This video is not meant to be a how to video, but shows you what I did to swap engines and double the horsepower of this newer 2021 ROKON Mototractor bike. I also removed the stock headlight and added an aftermarket LED light bar that uses a lot less power and makes way more light! If you do this swap you will need the lower power light as the Tillotson does not have as beefy a charging system as the Kohler. They must have done a special version for Rokon because the charging coils are very beefy in the the Kohler.

Links to Amazon parts I used:
NIBBI Carb: https://amzn.to/3YOhiBY
Jet kit for carb (running 45 pilot and 95 main currently): https://amzn.to/3EbmA2t
USB Charge port: https://amzn.to/410cQBV
LED Waterproof light bar (way brighter and less than 2A power draw!) : https://amzn.to/3RZIwUd
Dual charging coil needed for the Tillotson to run the factory voltage regulator: https://amzn.to/3lICQ4B

Design your own parts with Fusion 360 CAD and CAM software. It's what I use for all my professional and hobby design work. Here's a link for 20% off!
http://aklam.io/wdHjgE

You will note that my quickness and speed measurements were not very scientific between the before and after Rokon engine mods. I was not very excited about the the bike before so I didn't take the time to do it very well. Measuring with the same app, it was pretty clearly twice as quick to get to 20mph. Take it for what it's worth!
Cheers!