6061 T6 aluminium sloping frame with semi-integrated headset.
Straight fork in hi-ten steel for added comfort and precision.
Aheadset 1"1/8 head tube that provides great strength and rigidity to the steering assembly.
Handlebar / stem / steering
Aluminium B'Twin Sport handlebar - Handlebar width (axle-axle):
B'TWIN Sport aluminium stem. 60 mm
Indexed speed changes using 7-speed Shimano A050 shifter on the handlebar. Ergonomic and very comfortable: change speeds without letting go of the top part of the handlebar. This ergonomically-shaped lever fits the palm of your hand perfectly.
Shimano Tourney 7-speed rear derailleur (322 g).
Crankset / cassette
Single chainring is easier to use and reduces weight significantly: 40 teeth.Cranks: 152 mm.Cassette: SHIMANO 14 X 28.
Double braking system:
1 - Tektro RL 340 brake levers which provide good grip and excellent rigidity
2 - Tektro RL 720 levers on the handlebar making them easy to reach for children
Wheels / Tyres
B'TWIN SPORT 650 double-walled wheels.
Quick-release mount (9 mm) at the front for ease of movement and transport, nuts binding for the rear wheel.
New B'TWIN resist 5 tyres: 650 x 25.
B'TWIN inner tube.
Saddle / Seat post
New B'Twin Sport 100 Junior Black saddle.
B'Twin Sport aluminium seat post.
Diameter: 27.2 mm for added comfort thanks to its flexibility Length: 250 mm.
Rider weight / height
Bike weight: 10 kg
Rider height: 135 cm - 155 cm
Rider max. weight: < 70 kg
Lifetime warranty on bike frame, stem and handlebars.