Insync Sputnik 20" Wheel Kids Mountain Bike


Product No DN608

Sale Sold Out
£274.99 Regular price
Size Size Guide


The Insync Sputnik junior mountain bike is the perfect fit with young adventurers keen to take on the thrills and spills of off-road cycling. With fast-rolling wheels, scaled down drop bars for a comfortable fit and short reach 2 finger brake levers for confident speed control; the Sputnik is cleared for take-off!

The Sputnik's sleek, silver, lightweight, aluminium frame and rigid forks are designed for optimum manoeuvrability when taking sharp corners and tackling rougher terrain. Shimano's reliable 7 speed transmission has the gear ratios to cope with steep inclines and powerful V-brakes provide unbeatable stopping power. With top quality safety features such as non-slip pedals and chainguard to protect those smaller fingers the Insync Sputnik is the ultimate choice of bike for off-road kicks and tricks.

Suitable for 7-9 year olds with an inside leg measurement of 134-157cm.


  • Frame: Aluminium 20" wheel

  • Fork: Steel rigid 20" wheel

  • Headset: Steel Ahead

  • B. B. Set: 5 pieces

  • Decals: Insync Sputnik 20"

  • Seat Bolt/Pin/Clamp: Alloy 31.8mm, QR

  • Handle Bar: Steel 30mm Rise handlebar, 540mm

  • Stem: Zoom 30mm rise, 65mm

  • Grips: PVC Black MTB type

  • Front Brake: Alloy V Brake

  • Rear Brake: Alloy V Brake

  • Shifter Right: Shimano Thumbshifter Plus 7 speed

  • Rear Derailleur: Shimano 7 speed

  • Chain: 3/32" X 1/2" X 92L

  • Freewheel: 7 speed index 14-28T

  • Pedals: 9/16" PVC Black

  • Tyres Front: 20" x 1.90"

  • Tyres Rear: 20" x 1.90"

  • Rims: 20" Alloy 36 hole black

  • Front Hub: 36 hole Steel

  • Rear Hub: 36 hole Steel

  • Saddle: Boys comfort saddle Black

  • Seat Post: 27.2mm x 200mm micro adjust, black

  • Weight: 12kg


Delivery & Returns

Please see our delivery and returns page for full details.

Expert opinion:

“This silver sleek machine with its aluminium mountain bike frame was designed to perform, 7 speed Shimano thumbshiters, powerful v brakes with short reach 2 finger brake levers. Weighing in at only 10.3kg it's a winner.”

Wayne C

Head of IBD Sales - Insync