I Upgraded My Harbor Freight Go Kart to the MAX!

In this video, we take our 670cc-swapped mini rat rod to the absolute MAX! We build fully custom suspension, upgrade a few weak points you guys mentioned in the comments, and dial this thing in for maximum performance. Watch until the end to see it rip harder than ever! Check out how we built this!    • I Built a Mini Rat Rod with a Harbor Freig...   New Merch! https://bummotorsport.com/ Fan Mail P.O. Box if you would like to send us things 212 W Ironwood DR ste D PMB 535 Coeurd'Alene ID 83814 Become a member   / bummotorsport   Subscribe its free and it helps the Bum community grow:)