BULLS Big Free 1 Diamond

2023 UrbanCommuter Manufacturer page

BULLS Big Free 1 Diamond, color Black Matt

Price: Not published

Prices shown first for United States
Europe: €749 Last known price
Fork travel: 80 mm
Wheels: 26″
Gear range: 350%
Frame: Aluminum
Brakes: Rim brake

Sizes

Size guide

37cm
41cm
46cm
51cm

The manufacturer did not publish rider heights for these sizes.

Components

12 of 22 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

Alloy Not identified

Suspension

1 part

Fork
- SR Suntour XCE28
XCE-28

Drivetrain

6 parts

Cassette
- Shimano Tourney TZ MF-TZ500-7 7 speeds 14–28t
MF-TZ500
Chain
- KMC Z7 7 speeds
Z-7
Crankset

STYX 42/34/24T Not identified
Front derailleur
- Shimano Tourney FD-TY500
FD-TY500
Rear derailleur
- Shimano Tourney RD-TY300 7 speeds
RD-TY300
Shifters
- Shimano ST-EF41
ST-EF41

Brakes

1 part

Brakes

V-Brake Not identified

Wheels and tires

4 parts

Front hub
- Shimano Nexus DH-C3000-1N
DH-C3000-1NDH-C30001N
Rear hub
- Formula DC-31R
DC-31ROV-31R
Rims

STYX DBM-2 Not identified

DBM-2
Tires

Ace of Pace Not identified

Cockpit and contact points

6 parts

Handlebar

STYX riserbar Not identified
Headset
- FSA NO.11
Pedals
- Bulls
Saddle
- Bulls
Seatpost

STYX Aluminium Not identified
Stem

STYX Not identified

Other components

3 parts

Fenders

Kunststoff Not identified
Lights
- Fuxon
F-30
Racks

Aluminium schwarz Not identified

Sizes and geometry

4 sizes Open in the geometry plotter

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

Size 46cm

Table

Reach 408mm

Stack 579mm

Wheelbase 1088mm

Head angle 69.0°

Seat angle 73.0°

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 4 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	379	394	408	419
Stackmm	575	575	579	593
Seat tube lengthmm	—	410	460	510
Head tube lengthmm	130	130	140	155
Head tube angle	69°	69°	69°	69°
Seat tube angle	73°	73°	73°	73°
Chainstay lengthmm	430	430	430	430
Wheelbasemm	1056	1071	1088	1104
Front centermm	629	644	660	676
Bottom bracket dropmm	40	40	35	35
Fork rakemm	41	41	40	39
Trailmm	78	78	79	80
Stack/reach ratio	1.52	1.46	1.42	1.42

Not published by the manufacturer: Top tube length, Bottom bracket height, Standover height, 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
Weight limit: 125 kg

275.6 lb

Suspension

Suspension configuration: Hardtail
Front travel: 80 mm

Drivetrain

Derived by Bikelake

Front chainrings: 3
Smallest chainring: 24
Largest chainring: 42
Smallest sprocket: 14
Largest sprocket: 28
Lowest gear: 22.3 in
Highest gear: 78.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Coil
Wheel material: Aluminum
Wheel size: 26″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 8.5 km/h
Highest gear: 29.9 km/h

Total gear range 350%

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: 22.3–78.0 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 2023 builds
Specification	This bicycle BULLS Big Free 1 Diamond	BULLS Big Free 1 Trapeze	BULLS Big Free 2
Frame
Fork material	Not informed	Not informed	Steel
Suspension
Front travel	80 mm	80 mm	100 mm
Drivetrain
Lowest gear	22.3 in	22.3 in	23.6 in
Highest gear	78.0 in	78.0 in	82.5 in
Brakes
Brake type	Rim brake	Rim brake	Mechanical disc
Other specifications
Wheel size	26″	26″	650b