Radius Trailraiser 3 Boys Bike 20 Inch Gloss Red/Black Chrome (2019)

Now $412.00 RRP $425.00 SAVE $13.00
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The Radius Trailraiser 3 is a 20 inch boys bike with snappy handling and a sporty look.  The Trailraiser 3 is built with a 20" Junior boys light weight alloy frame and Radius Junior geometry. The low stand over height makes for easy mounting and confident riding, while the super comfortable junior specific saddle and grips are super comfy. This bike is really easy for kids to ride and is built to be durable and efficient. The 20" easy rolling tyres are versatile and can handle the pavement and gravel paths. While the Shimano Nexus inner 3 speed shifter offers hassle free shifting and low maintenance.

The Trailraiser 3 is a great bike for the developing rider and is a very comfortable and enjoyable bike for the boy that just wants to get out and explore the streets or the trails. The lightweight alloy frame is an excellent feature on a kids bike and improves comfort and control.


  • 20" Junior boys light weight alloy frame, with Radius Junior geometry.
  • Low stand over height for easy mounting and confident riding.
  • Steel straight blade fork, for a sporty look and snappy handling.
  • 20" easy rolling tyres, for paved and gravel paths.
  • Hassle free shifting and low maintenance with Shimano Nexus inner 3 speed shifting.
  • Super comfortable junior specific saddle and grips, for ultimate riding comfort.
  • Full alloy youth specific short reach brake lever, for easy brake operation.


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Model Year2019
Popular FiltersBoy's
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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.

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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.