Biktrix Stunner-X

2019 MountainFat bike Electric bicycle

Last known price: $1,999

Prices shown first for United States
Fork travel: 110 mm
Wheels: 26″
Drivetrain: 1 × 7 48t / 11–34t
Gear range: 309%
Battery: 576 Wh
Weight: 32.65 kg 72.0 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Mechanical disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

9 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

Aluminum Alloy Not identified

Electric system

3 parts

Battery

Weight: 9.5 lbs (4.3 kg), Brand: Samsung, Voltage: 48 volts, Amp Hours: 12 ah, Watt Hours: 576 wh, Chemistry: Lithium-ion Not identified
Display

APT Gray scale LCD, Fixed, Backlit Not identified
Motor
- Bafang

Suspension

1 part

Fork
- RST

Drivetrain

3 parts

Cassette
- Shimano
Crankset

Aluminum Alloy, 175mm Length, 48Tooth Chainring Not identified
Shifters
- Shimano Altus

Brakes

1 part

Brakes
- Tektro
MD-M300

Wheels and tires

3 parts

Rims

Aluminum Alloy, Double Wall, 80mm Outer Width, 36 Hole, Punchouts Not identified
Spokes

Stainless Steel, 13 Gauge, Black with Stainless Spoke Screws Not identified
Tires
- Kenda

Cockpit and contact points

7 parts

Grips

Ergonomic Friction Mounted, Black with Gray Accents Not identified
Handlebar
- ProMax
Headset

1" Mon-Tapered, Non-sealed Bearings Not identified
Pedals
- Wellgo
Saddle

Faux Leather Wrapped 9.5 Wide Saddle with Gel Not identified
Seatpost

Rigid Aluminium Alloy Not identified
Stem
- ProMax

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
Bicycle weight: 32.65 kg

72.0 lb

Suspension

Suspension configuration: Hardtail
Front travel: 110 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 48
Largest chainring: 48
Rear sprockets: 7
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 36.7 in
Highest gear: 113.5 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Electric system

Battery capacity: 576 Wh

Additional specifications

Battery: Weight: 9.5 lbs (4.3 kg), Brand: Samsung, Voltage: 48 volts, Amp Hours: 12 ah, Watt Hours: 576 wh, Chemistry: Lithium-ion
Tire width: 4″
Wheel material: Aluminum
Wheel size: 26″

Technical analysis

2 measures

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

Lowest gear

36.7 gear inches

This value is above the central range for this class.

Cohort: Mountain / Fat bike Model year: 2019
Sample: 82 bicycles with this information
Coverage: 95.3% of the class

Highest gear

113.5 gear inches

This value is above the central range for this class.

Cohort: Mountain / Fat bike Model year: 2019
Sample: 82 bicycles with this information
Coverage: 95.3% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 14.1 km/h
Highest gear: 43.5 km/h

Total gear range 309%

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: 36.7–113.5 gear inches
Class reference (p10–p90): 15.6–88.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Fat bike Model year: 2019
Lowest gear: 82 bicycles with this information, 95.3% of the class
Highest gear: 82 bicycles with this information, 95.3% of the class