Had a chance to spin a few laps out at Chaney Ranch Motocross on the custom supermini with a 125 engine 🔥 Would you guys have more fun on this or a big bike? We get a ton of questions about this BBR Motorsports Supermini 125 build, so here is a rundown. This is a complete one off Supermini sized bike that we put a YZ125 engine into. I have tons of fun ripping Supermini sized bikes but struggle to keep them alive as an adult. We talked about just building a aluminum framed Supermini to keep the frame from bending and breaking everything around it. But had also talked about putting a 125 into a Supermini so that it has tons of fast, fun, and reliable power. My dad Duane Brown got to work on this dream project putting in over 300 man hours of milling, welding, machining, and grinding to make this thing a reality. This is NOT a cut down 125 frame, he made the frame from scratch. By the end of it he made a full one off aluminum Supermini frame, linkage and swingarm, rocking a YZ125 engine with an Eric Gorr 134 kit. We made sure to make the YZ125 air intake boot fit so that it didn’t lose any power, along with the YZ125 dual radiators so that it stays cool. We are running KTM 85 forks/clamps since they are the biggest diameter around out of all the 85’s. It still runs the stock YZ85 subframe, seat and plastics, with a custom aluminum gas tank (the stock YZ85 tank only has enough room for 1 radiator). The bike has a Pro Circuit YZ125 pipe/silencer, Dubya 16” 19” wheels with Dunlop MX33’s, Moto Stuff oversized front brake/rotor, the @Lectron Fuel Systems Billetron along with @Maxima Racing Oils. Huge thanks to @MotoSport.com for helping to get all the parts needed. We made this bike purely to have tons of fun on, and this bad boy turned out to be an absolute blast to ride! @Red Bull Motorsports @Red Bull #YZ125 #YZ85 #supermini