In a previous video ( https://www.youtube.com/watch?v=l_N_AwBnjq4 ), I built and tested a 2-stroke bike engine kit. For $120, it turned out to be a great kit! It does require a little bit of upkeep and maintenance. In this video, I put together a 4-stroke bike engine kit and then compare it to the 2-stroke bike engine kit. We test top speed, ease of use, noise, amount of exhaust smoke, and several other things. I purchased the kit from Amazon for $189. I don't normally provide links to the products I test, since I'm not an Amazon partner and my goal isn't to sell products. These kits are also available on many other websites. So, recommend shopping around for a better price. Products Tested In This Video (in no particular order): 4 stroke bike engine kit: https://amzn.to/2YrDHZ5 (no longer available) 2 stroke bike engine kit: https://amzn.to/3l7P5TG (no longer available) Videography Equipment: Sony DSC-RX10 III Cyber-shot Digital Still Camera: https://amzn.to/2YdXvPw Canon 70D Camera: https://amzn.to/31b5Gy0 Azden Microphone: https://amzn.to/34d3DLE Go Pro Bundle: https://amzn.to/31aince ➡ Thank you very much for supporting the channel: https://www.patreon.com/projectfarm ➡ An easy way to find past videos along with products tested: http://bit.ly/2FCrBpk A big thanks to Jim for putting this together. ➡ Merch: www.Project-Farm.com ➡ Click here if you'd like to subscribe: https://www.youtube.com/channel/UC2rzsm1Qi6N1X-wuOg_p0Ng ➡ As an Amazon Associate I earn from qualifying purchases. This video is only for entertainment purposes. If you rely on the information portrayed in this video, you assume the responsibility for the results. Project Farm LLC