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Radius Explosive Boys Bike 20 Inch Gloss Black/Red (2019)

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The Radius Explosive is a 20 inch boys bmx bike that is big on style and comfort. Kids will love the colours and design, while enjoying the kids specific build. It is made with the Junior BMX hi-tensile frame and Radius Junior BMX geometry. The steel BMX fork creates a stable ride and a sporty look with snappy handling.

It has a low stand over height for easy mounting and confident riding, while a super comfortable junior BMX saddle and junior BMX specific grips, offer a super comfortable ride. The 20" BMX knobby offer great traction and speed for the kids to let loose in the park The Radius Explosive 20 is a built to be durable enough to handle the challenges kids can throw at their bikes. While it is still comfortable and looks good, everything you need in a kids bike.


  • 20" Junior BMX hi-tensile frame, with Radius Junior BMX geometry.
  • Low stand over height for easy mounting and confident riding.
  • Steel BMX fork creates a stable ride and a sporty look with snappy handling.
  • 20" BMX Knobby tyres, great for riding in the dirt.
  • Super comfortable junior BMX saddle and BMX specific grips, for ultimate riding comfort.
  • Rear coaster foot brake and caliper front brake provide the perfect amount of stopping power.
More Information
SKU AP19656
Season 2019
Size 20inch
Wheel Size 20"
Frame Material Steel
Fork Material Steel
Chainset Type Single
Brake Type V-Brake
Frame Boy's 20" Hi-Ten steel BMX style frame
Speeds 1 x ##
Kids Bike Sizing 20 Inch
Gender Boys

About Radius 

Radius bikes have been produced by one of Australia's most iconic bicycle brands, Apollo, since the late 90s. Radius represents safety, fun, simplicity and value in its range of recreational bikes for kids and youths.

View all Radius bikes >

Radius Kids Bike Sizing Chart

Rider's Height (cm)
12" Wheel
16" Wheel
20" Wheel
24" Wheel
26" Wheel

This is an accurate estimate, and every new bike comes with a free professional bike fit when you click & collect in store, plus all bikes have a 30 day Perfect Ride Guarantee.