Bumper Ninja Boys 18" Pavement Bike Black/Red

Stay in the shadows and be a hero with the 2018 Bumper Ninja boys bike. Designed with strength and ability in mind, the ninja features a durable hi-tensile steel fork and rigid frame which has the ability to withstand everyday knocks. The single speed system features sturdy v-type brakes for excellent stopping distances, as well as 18" wheels with fiery red alloy rims. Non-slip black pedals are a main safety features, allowing your boys to maintain full control over the bike whilst still reaching quick speeds.


  • Frame: 11" Junior Hi-Tensile steel.
  • Fork: Rigid, Hi-Tensile steel.
  • Headset: Steel, full ball bearing 1".
  • Drivetrain Components: Steel, 1pc, 114mm crank with 36t sprocket.
  • Chain: KMC, Plastic chainguard with ninja decals.
  • Pedals: 1/2" non-slip plastic.
  • Handlebar: Steel, 150mm rise.
  • Stem: Steel, quill type.
  • Grips: Clear comfort, 105mm.
  • Saddle: Junior black comfort saddle.
  • Tyres: 16 x 2.125" blackwall tyres with red rims.
  • Bottom Bracket: Steel, loose ball.
  • Front & Rear Hub: Steel 20h looseball 3/8".
  • Rim: Alloy 20h.
  • Brakes: Alloy V - type.
  • Freewheel: 18t freewheel.
  • Extras: Chainguard and Front plate.
  • Cycle Condition: New. This bike is shipped 90% assembled in a sealed box. Inflation of tyres, fitting of pedals, stabilizers, stem and handlebars, front wheel, front brake cable, saddle and post are necessary.