CTM Sly 20-inch children’s bike — a 7.4 kg bike with seven gears for everyday rides:

Key features

• Wheel size: 20 in
• Frame size: 10 in
• Suggested rider height: Approx. 115–135 cm
• Suggested age: Approx. 6–9 years; check fit as well as age
• Material: 6061 aluminium frame and fork
• Gears: 7-speed Shimano drivetrain
• Crankset: Prowheel, 28T, 114 mm
• Weight: Approx. 7.4 kg

Less weight to handle

The Sly 20 weighs approximately 7.4 kg, with a 6061 aluminium frame and rigid aluminium fork. There is less weight for your child to manoeuvre and for you to lift when needed. A handle at the back of the saddle helps you carry the bike.

Seven gears for changing gradients

The Shimano seven-speed drivetrain lets your child choose a gear to suit the route. A 28T chainring pairs with an 11–28T cassette, operated through a Shimano RV 200 shifter. The Prowheel cranks measure 114 mm.

Check reach and braking as well as height

The suggested height range is around 115–135 cm, typically for children aged about 6–9. Check that your child can reach the 540 mm-wide bar, use the brakes comfortably and stand over the frame with clearance. The 10-inch frame size is separate from the 20-inch wheel size.

The adjustable saddle position helps you set up the fit within the component limits. Tektro V-brakes need adjusting before the first ride and checking before each outing.

Choose a suitable route, supervise your child and check the bike’s condition before every ride. The 20 x 1.95-inch tyres and rigid fork do not make the bike suitable for every type of off-road riding.

CTM Sly 20-inch children’s bike — specifications:

Sizing, weight and other details:

• Wheel size: 20 in
• Suggested rider height: Approx. 115–135 cm
• Suggested age: Approx. 6–9 years; check fit as well as age
• Weight: Approx. 7.4 kg

Frame:

• Frame size: 10 in
• Material: 6061 aluminium frame and fork
• Frame: CTM Sly Superlight, 6061 aluminium, 10 in

Drivetrain:

• Gears: 7-speed Shimano drivetrain
• Cassette: Shimano CS-HG400/7, 11–28T
• Rear derailleur: Shimano Tourney RD-TY200
• Shifter: Shimano RV 200/7-speed

Cranks:

• Crankset: Prowheel, 28T, 114 mm

Fork:

• Fork: 6061 aluminium, unicrown, 20 in

Handlebars:

• Handlebar: CTM Zoom Kids, 540 mm width, 50 mm rise

Stem:

• Stem: Zoom kids 40, integrated cockpit

Headset:

• Headset: FSA Orbit CE NO.8B, cartridge bearings

Wheels and rims:

• Rims: CTM HLQ-16, 20 in, 406 x 21, 24H/20H

Tyres:

• Tyres: W-Tyres, 20 x 1.95 in, 30 TPI, skinwall

Hubs and guards:

• Hubs: CTM alloy, 24H/20H

Chain:

• Chain: KMC Z33

Brakes and controls:

• Brakes: Tektro V-brakes

Saddle and seatpost:

• Saddle: CTM Sly, rear carrying handle
• Seatpost: Aluminium, 220 mm length, 27.2 mm diameter

Pedals:

• Pedals: VPE-229

Safety while riding

Off-road riding, jumps and landings put high loads through the bike. No bike is indestructible: parts can wear out or become damaged. Check the frame, fork, bars, wheels, axles, cranks, pedals, brakes and bolted connections before every ride. Inspect the bike after a hard impact and stop riding if you find looseness, cracks or damage. Have any problem checked and repaired before riding again.

Wear a properly fitted helmet and suitable protective pads. Read our important information before buying and using a bike for assembly, servicing and riding checks.

Important information about your new bike

• Read the instructions and warranty supplied with the bike before riding.
• The bike is delivered approximately 90% assembled for shipping.
• Before the first ride, fit the pedals, saddle and handlebars, and the front wheel where required. Follow the assembly instructions and check all components.
• Have a professional bike workshop carry out a pre-ride inspection. This is a paid service; keep the receipt as proof for the manufacturer’s warranty and follow the warranty terms supplied with your bike.

The manufacturer’s warranty is separate from your statutory consumer rights. Continue to inspect and service the bike throughout its use.

Frame measurement guide:

This diagram explains the measurement labels. It is an illustration of a hardtail frame, not a drawing or geometry chart for this specific bike.