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Concept Thunderbolt


2 in stock

Concept Thunderbolt 18 Speed 24″ Wheel Boys Bicycle

Another new junior bike from the clever bike geeks at Insync. This one is a cool customer, designed for the boy bike rider who wants to try some offroad riding. It’s fitted with powerful front and rear V-type brakes, steel wheels with mountain bike tyres that will also give a good ride on tarmac surfaces. Finished in a exclusive blue colourway with subtle decals.


Frame: Steel Boys 24″ wheel ATB style frame.
Fork: 24″ Steel Fork.
Headset: Steel Full Ball Bearing.
B.B Set: Cotterless 5 pieces.
Handlebar: Steel Lo-Rise Bar 580mm.
Stem: Steel MTB Type 22.2mm.
Grips: PVC MTB Type.
Front Brake: Alloy V Brake.
Rear Brake: Alloy V Brake.
Shifter Left: Microshift (Friction).
Shifter Right: Microshift (6 Speed).
Rear Derailleur: Shimano TZ50GS (Bracket Type).
Chain: KMC Z-33 102L.
Chainset: 24 x 34 x 42T 150mm.
Tyres Front: 24 X 1.90.
Tyres Rear: 24 X 1.90.
Rims: 24″ Alloy 36 Hole Single wall.
Front Hub: Steel 36H, Nutted.
Rear Hub: Steel 36H, Nutted.
Saddle: MTB Type Black.
Seat Clamp: Steel bolt w/washer & Dome Nut.


1. V Type brakes for an improved braking performance.
2. 24″ Wheels.
3. Junior non-slip pedals prevent feet slipping off.
4. High rise handlebars help to promote a good riding position and ensure children are more aware of their surroundings.
5. Adjustable brake levers which can be easily operated by smaller hands.
6. Grips made from a softer dual compound for quality and comfort.
7. Boys Mountain Bike Saddle.
8. This bike features stand out styling on the frame.

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