B’TWIN 20 inch Kids Mountain bike rockrider st 900 6-9 years

Name: B’TWIN 20 inch Kids Mountain bike rockrider st 900 6-9 years
Brand: B’TWIN

2023 YouthGeneral youth Manufacturer page

Price: Not published

Prices shown first for United States
United Kingdom: £299 Last known price
Wheels: 20″
Frame: Aluminum
Brakes: Rim brake

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

9 parts

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Aluminium frame designed for mountain biking Not identified

Suspension

1 part

Fork

Travel of the front suspension fork Not identified

Drivetrain

1 part

Crankset

Aluminium chainset with 140 mm crank Not identified

Brakes

2 parts

Brake levers

Specifically designed for children Not identified
Brakes

Cable-activated disc brake at the front and a V-brake at the rear Not identified

Wheels and tires

2 parts

Rims

20" wheels and MTB SkinWall tyres Not identified
Tires

The tyres are designed for mountain biking. The side lugs provide good traction for cornering. The tyres use SkinWall technology. This process reduces their weight and makes them more flexible, which increases performance, grip and comfort. The recommended tyre pressure is displayed on the tyre sidewall (between 2 and 3.5 bar). 20-inch 1.7"-2.2" wide inner tube with Schrader valve. Not identified

Cockpit and contact points

2 parts

Handlebar

Short aluminium stem (60 mm handlebar) and an oversized 520 mm handle Not identified
Saddle

Ergonomic saddle with aluminium seat post Not identified

Sizes and geometry

1 size

Rider-height ranges are not published for these sizes.

Size

Geometry not published

The manufacturer lists these sizes without frame measurements, so there is no drawing or geometry table.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum

Suspension

Suspension configuration: Hardtail

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Shifting: Mechanical

Additional specifications

Tire width: 2.2″
Travel: Front: Additional specification: Not available: No
Wheel material: Aluminum
Wheel size: 20″

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2023 builds
Specification	This bicycle B’TWIN 20 inch Kids Mountain bike rockrider st 900 6-9 years	B’TWIN 20 Inch BMX Wipe 100	B’TWIN 20 Inch folding bike 100	B’TWIN 20 Inch Folding Bike 500	B’TWIN 20 Inch Folding Bike 900	B’TWIN 20 Inch Kids Hybrid Bike Original 120 6-9 Years OLD
Frame
Frame material	Aluminum	Steel	Steel	Aluminum	Aluminum	Steel
Fork material	Not informed	Steel	Steel	Steel	Aluminum	Not informed
Suspension
Suspension configuration	Hardtail	Rigid	Rigid	Rigid	Rigid	Rigid
Cockpit
Seatpost	Not informed	Rigid seatpost	Not informed	Not informed	Not informed	Not informed
Other specifications
Suspension	Hardtail	Rigid	Rigid	Rigid	Rigid	Rigid
Tire width	2.2″	2.1″	1.75″	1.75″	1.75″	Not informed
Travel	Configuration: HardtailFront: Additional specification: Not available: No	Configuration: Rigid	Configuration: Rigid	Configuration: Rigid	Configuration: Rigid	Configuration: Rigid
Bottom bracket standard	Not informed	BSA	Not informed	Not informed	Not informed	Not informed