Dartmoor Rocbird Junior 26/24

Name: Dartmoor Rocbird Junior 26/24
Brand: Dartmoor

2026 YouthGeneral youth Manufacturer page

Fork travel: 140 mm
Wheels: 26″
Drivetrain: 1 × 9 30t / 11–38t
Gear range: 345%
Weight: 14.5 kg 32.0 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

17 of 19 identified

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

glossy Copper Orange/Light Orange or glossy Prism Blue/Light Blue, AL 6061-T6 Not identified

Suspension

2 parts

Drivetrain

5 parts

Brakes

1 part

Brakes
- Tektro HD-J2820
HD-J2820

Wheels and tires

4 parts

Cockpit and contact points

6 parts

Grips
- Dartmoor
Handlebar
- Dartmoor
Pedals
- Dartmoor
Saddle
- Dartmoor
Seatpost

alu 6061, 30.9x300mm Not identified
Stem
- Dartmoor

Sizes and geometry

1 size Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size SM

Table

Reach 370mm

Stack 565mm

Wheelbase 1059mm

Head angle 66.0°

Seat angle 78.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 26″ wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Reachmm	370
Stackmm	565
Seat tube lengthmm	331
Head tube lengthmm	100
Head tube angle	66°
Seat tube angle	78°
Chainstay lengthmm	399
Wheelbasemm	1059
Front centermm	660
Bottom bracket dropmm	6
Standover heightmm	610
Fork rakemm	38
Stack/reach ratio	1.53

Not published by the manufacturer: Top tube length, Bottom bracket height, Trail, Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Bicycle weight: 14.5 kg

32.0 lb

Suspension

Suspension configuration: Full suspension
Front travel: 140 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 38
Lowest gear: 20.5 in
Highest gear: 70.9 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 2.4″
Wheel material: Aluminum
Wheel size: 26″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.9 km/h
Highest gear: 27.2 km/h

Total gear range 345%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 20.5–70.9 gear inches

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 2026 builds

Differences across 2026 builds
Specification	This bicycle Dartmoor Rocbird Junior 26/24	Dartmoor Rocbird Enduro EVO	Dartmoor Rocbird Enduro Intro	Dartmoor Rocbird Enduro PRO XT Di2	Dartmoor Rocbird Junior 27.5/26	Dartmoor Rocbird Trail EVO
Frame
Bicycle weight	14.5 kg	16.2 kg	16 kg	15.9 kg	15.6 kg	15.7 kg
Suspension
Front travel	140 mm	160 mm	160 mm	160 mm	160 mm	150 mm
Rear travel	Not informed	160 mm	160 mm	160 mm	160 mm	140 mm
Drivetrain
Smallest chainring	30	30	32	32	32	30
Largest chainring	30	30	32	32	32	30
Rear sprockets	9	11	11	12	10	11
Smallest sprocket	11	11	11	10	11	11
Largest sprocket	38	51	50	51	48	51
Lowest gear	20.5 in	16.2 in	17.6 in	17.3 in	18.3 in	16.2 in
Highest gear	70.9 in	75.0 in	80.0 in	88.0 in	80.0 in	75.0 in
Wheels
Wheel configuration	Same size	Different sizes	Different sizes	Different sizes	Same size	Different sizes
Cockpit
Seatpost	Rigid seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost
Shifting	Mechanical	Mechanical	Mechanical	Electronic	Mechanical	Mechanical
Derailleur hanger	Not informed	UDH	Not informed	Not informed	Not informed	UDH
Other specifications
Tire width	2.4″	2.5″	2.4″	2.5″	2.4″	2.4″
Wheel size	26″	29″ / 27.5″	29″ / 27.5″	29″ / 27.5″	27.5″	29″ / 27.5″
Fork spring	Not informed	Air	Air	Air	Air	Air
Bottom bracket standard	Not informed	Not informed	Not informed	BSA	Not informed	Not informed