BULLS Sonic SX Dakar

2025 MountainTrail Electric bicycle Manufacturer page

BULLS Sonic SX Dakar, color Monza Grey / Ud Carbon

Price: Not published

Prices shown first for United States
Europe: €5,799 Last known price
Fork travel: 120 mm
Wheels: 29″
Drivetrain: 1 × 12 10–51t
Gear range: 510%
Frame: Carbon
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

16 of 21 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

Carbon Not identified

Electric system

3 parts

Suspension

1 part

Fork
- RockShox 35 Gold RL

Drivetrain

5 parts

Cassette
- Shimano Deore CS-M6100-12 12 speeds 10–51t
CS-M6100-12
Chain
- Shimano Deore CN-M6100
CN-M6100CN-M6100-12
Crankset
- Samox
Rear derailleur
- Shimano Deore XT RD-M8100 12 speeds
RD-M8100
Shifters
- Shimano Deore SL-M6100 12 speeds
SL-M6100

Brakes

1 part

Brakes

Hydraulic disc brake Not identified

Wheels and tires

2 parts

Cockpit and contact points

6 parts

Handlebar

RUMBLE Altimate Not identified
Headset
- Acros
AIF-531
Pedals

ZECURE MTB pedals Not identified
Saddle
- Prologo
Seatpost
- Limotec
Stem

Rumble Altimate Not identified

Other components

2 parts

Lights
- Fuxon
FF-100
Racks
- Bulls

Sizes and geometry

2 sizes 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 420mm

Stack 629mm

Wheelbase 1158mm

Head angle 67.0°

Seat angle 75.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 29″ wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 2 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	420	450
Stackmm	629	638
Top tube lengthmm	585	616
Seat tube lengthmm	400	440
Head tube lengthmm	100	110
Head tube angle	67°	67°
Seat tube angle	75°	75°
Chainstay lengthmm	445	445
Wheelbasemm	1158	1192
Front centermm	720	754
Bottom bracket dropmm	62.5	62.5
Bottom bracket heightmm	312	312
Fork rakemm	52	53
Trailmm	102	101
Stack/reach ratio	1.50	1.42
Suspension and parts
Handlebar widthmm	780	780

Not published by the manufacturer: Standover height, Front travel, Rear travel, Crank length, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Carbon
Weight limit: 130 kg

286.6 lb

Suspension

Suspension configuration: Hardtail
Front travel: 120 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 51

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Air
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

2 measures

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

Front travel

120 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,808 bicycles with this information
Coverage: 97.5% of the class

Shifting

Mechanical

387 of 1,847 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,847 bicycles with this information
Coverage: 99.6% of the class

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 2025 builds
Specification	This bicycle BULLS Sonic SX Dakar	BULLS Sonic AM 1	BULLS Sonic AM 2 ABS	BULLS Sonic AM 3	BULLS Sonic AM 4 ABS	BULLS Sonic EN-R 1
Frame
Weight limit	130 kg	150 kg	150 kg	150 kg	150 kg	125 kg
Suspension
Suspension configuration	Hardtail	Full suspension	Full suspension	Full suspension	Full suspension	Full suspension
Front travel	120 mm	150 mm	150 mm	150 mm	150 mm	170 mm
Drivetrain
Rear sprockets	12	Not informed	Not informed	12	12	Not informed
Smallest sprocket	10	11	11	10	10	11
Largest sprocket	51	50	50	52	52	50
Cockpit
Shifting	Mechanical	Mechanical	Mechanical	Electronic	Electronic	Mechanical
Other specifications
Fork spring	Air	Air	Air	Air	Air	Not informed
Suspension	Hardtail	Full suspension	Full suspension	Full suspension	Full suspension	Full suspension
Wheel size	29″	29″	29″	29″	29″	27.5″