Nahum Billington is a rad 13 year old BMXer from Canada. Nahum just transitioned from an 18″ to a 20″ Sunday Radocaster build. BMX Groms worked with him to build the bike and document the size change for an upcoming feature on BMX Groms. We used as many parts from the 18″ as possible to help the transition. The 20″ Radocaster frame is a good choice for your first 20″ BMX. The Radocaster frame features excellent quality at an affordable price, which is important when you are still growing and may move up to a larger frame in the future. Learn more about this frame on Sunday Bikes. The 20.5″ top tube length is a good entry point into the 20″ size. For more info on BMX sizing, peek our sizing guide.
Riding style (park/street/trails etc.)? Everything I can ride.
How old were you when you started riding? 8
Which size BMX did you start on? 18″
Do you have any advice for kids choosing a bike to start BMX? Choose a bike that fits you, not one you can grow into.
Frame/Top Tube Length: Sunday Radocaster 20.5
Fork: Sunday Octave
Bars/Size: Fit Skyhigh 8.25″
Stem: Shadow Strike Front-load
Grips: Odyssey Tidal
Bar ends: Odyssey
Seatpost: Duo Resilite
Seat: Elat OZ
Cranks (and crank arm length): Sunday Saker 175mm
Sprocket (and number of teeth): Sunday Sabertooth 28 tooth
Front Tire: Fly Ruben Rampera
Front Wheel: Sunday Lighting
Rear Tire: Fly Ruben Rampera
Rear Wheel: Sunday Lighting
Pedals: Fly Ruben Graphite
Hub Guard: Gsport
Any special mods? My bars are cut to a custom width, so they aren’t too wide.
Shoutouts or thanks? Huge shout-out and thanks to Sunday and BMX Gromsby