Haibike HardFour

2021 YouthMountain youth Electric bicycle Manufacturer page

Haibike HardFour, color Cool Grey / Red / Cyan

Price: Not published

Prices shown first for United States
Europe: €2,299 Last known price
Fork travel: 63 mm
Wheels: 24″
Drivetrain: 1 × 9 32t / 11–36t
Gear range: 327%
Battery: 400 Wh
Weight: 20 kg 44.1 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

20 of 24 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

Haibike, HardFour, Aluminium 6061 Not identified

Electric system

3 parts

Suspension

1 part

Fork
- SR Suntour

Drivetrain

7 parts

Bottom bracket

Integrated in the motor Not identified
Cassette
- Shimano CS-HG200
CS-HG200
Chain
- KMC X9 9 speeds
Chain guide

Nylon dircetmount Not identified
Crankset

Steel, 32 teeth Not identified
Rear derailleur
- Shimano RD-M2000
RD-M2000
Shifters
- Shimano Altus SL-M2010
SL-M2010

Brakes

2 parts

Brake levers
- Tektro HD-M282
HD-M282
Brakes
- Tektro HD-M282
HD-M282

Wheels and tires

3 parts

Cockpit and contact points

7 parts

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 Uni

Table

Reach 330mm

Stack 556mm

Wheelbase 1000mm

Head angle 68.0°

Seat angle 73.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 24″ 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	330
Stackmm	556
Top tube lengthmm	500
Seat tube lengthmm	340
Head tube lengthmm	165
Head tube angle	68°
Seat tube angle	73°
Chainstay lengthmm	415
Wheelbasemm	1000
Front centermm	587
Bottom bracket dropmm	30
Standover heightmm	640
Fork rakemm	40
Stack/reach ratio	1.69

Not published by the manufacturer: 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
Fork material: Steel
Bicycle weight: 20 kg

44.1 lb
Weight limit: 80 kg

176.4 lb

Suspension

Suspension configuration: Hardtail
Front travel: 63 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 21.3 in
Highest gear: 69.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Electric system

Battery capacity: 400 Wh

Additional specifications

Battery: Yamaha Lithium Ion 400Wh
Tire width: 2″
Wheel material: Aluminum
Wheel size: 24″

Technical analysis

2 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

21.3 gear inches

This value is within the central range for this class.

Cohort: Youth / Mountain youth Model year: 2021
Sample: 230 bicycles with this information
Coverage: 72.3% of the class

Highest gear

69.8 gear inches

This value is within the central range for this class.

Cohort: Youth / Mountain youth Model year: 2021
Sample: 230 bicycles with this information
Coverage: 72.3% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 8.2 km/h
Highest gear: 26.7 km/h

Total gear range 327%

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: 21.3–69.8 gear inches
Class reference (p10–p90): 15.6–80.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Youth / Mountain youth Model year: 2021
Lowest gear: 230 bicycles with this information, 72.3% of the class
Highest gear: 230 bicycles with this information, 72.3% of the class