BULLS Copperhead E1 27.5

Name: BULLS Copperhead E1 27.5
Brand: BULLS

2021 MountainCross-country Electric bicycle Manufacturer page

BULLS Copperhead E1 27.5, color Anodized Blue

Price: Not published

Prices shown first for United States
Europe: €2,599 Last known price
Fork travel: 100 mm
Wheels: 27.5″
Drivetrain: 1 × 9 38t / 11–36t
Gear range: 327%
Battery: 400 Wh
Weight: 24.4 kg 53.8 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

41cm
44cm
48cm
54cm

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

Alloy Not identified

Electric system

3 parts

Suspension

1 part

Fork
- SR Suntour

Drivetrain

5 parts

Cassette
- Shimano CS-HG200 11–36t
CS-HG200
Chain
- KMC
Crankset
- FSA 38t
CK-220
Rear derailleur
- Shimano RD-M4000
RD-M4000RD-M4000-SGS
Shifters
- Shimano Alivio SL-M4000
SL-M4000

Brakes

1 part

Brakes
- Tektro HD-M275 / HD-M276
HD-M275HD-M276

Wheels and tires

4 parts

Front hub
- Formula DC-20
DC-20DC-20FQR
Rear hub
- Formula DC-22
DC-22
Rims

DDM-2 Not identified

DDM-2
Tires

STYX Ace of Pace TrailSkin Not identified

Cockpit and contact points

6 parts

Handlebar
- Kalloy
HB-RB12
Headset
- FSA
Pedals
- Wellgo
ZZE-01M
Saddle
- Bulls
Seatpost

SP-368, 30,9x350mm Not identified

SP-368
Stem

MonkeyLink AS-ML3 Not identified

AS-ML3

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 44cm

Table

Reach 430mm

Stack 607mm

Wheelbase 1171mm

Head angle 67.5°

Seat angle 73.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 27.5″ 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	419	430	454	476
Stackmm	612	607	612	621
Top tube lengthmm	595	610	635	660
Seat tube lengthmm	410	440	480	540
Head tube lengthmm	120	120	130	140
Head tube angle	67.5°	67.5°	67.5°	67.5°
Seat tube angle	74°	73.5°	73.5°	73.5°
Chainstay lengthmm	465	465	465	465
Wheelbasemm	1160	1171	1199	1225
Front centermm	699	710	737	763
Bottom bracket dropmm	50	45	40	40
Bottom bracket heightmm	305	310	315	315
Fork rakemm	42	42	41	42
Trailmm	102	102	103	102
Stack/reach ratio	1.46	1.41	1.35	1.31

Not published by the manufacturer: 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
Bicycle weight: 24.4 kg

53.8 lb

Suspension

Suspension configuration: Hardtail
Front travel: 100 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 38
Largest chainring: 38
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 29.0 in
Highest gear: 95.0 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: PowerPack 400
Fork spring: Coil
Wheel material: Aluminum
Wheel size: 27.5″

Technical analysis

4 measures

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

Front travel

100 mm

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2021
Sample: 1,256 bicycles with this information
Coverage: 91.6% of the class

Lowest gear

29.0 gear inches

This value is above the central range for this class.

Cohort: Mountain / Cross-country Model year: 2021
Sample: 1,101 bicycles with this information
Coverage: 80.3% of the class

Highest gear

95.0 gear inches

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2021
Sample: 1,101 bicycles with this information
Coverage: 80.3% of the class

Shifting

Mechanical

89 of 1,368 bicycles with this information use electronic shifting.

Cohort: Mountain / Cross-country Model year: 2021
Sample: 1,368 bicycles with this information
Coverage: 99.7% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 11.1 km/h
Highest gear: 36.4 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: 29.0–95.0 gear inches
Class reference (p10–p90): 17.4–100.2 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Cross-country Model year: 2021
Lowest gear: 1101 bicycles with this information, 80.3% of the class
Highest gear: 1101 bicycles with this information, 80.3% 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 2021 builds

Differences across 2021 builds
Specification	This bicycle BULLS Copperhead E1 27.5	BULLS Copperhead E1 29	BULLS Copperhead E1 Street 27.5	BULLS Copperhead E2 27.5	BULLS Copperhead E2 29	BULLS Copperhead E2 Street 27.5
Frame
Bicycle weight	24.4 kg	24.4 kg	23.3 kg	24.1 kg	24.1 kg	24.1 kg
Suspension
Front travel	100 mm	100 mm	100 mm	120 mm	100 mm	100 mm
Drivetrain
Smallest chainring	38	Not informed	38	Not informed	Not informed	Not informed
Largest chainring	38	Not informed	38	Not informed	Not informed	Not informed
Lowest gear	29.0 in	Not informed	29.0 in	Not informed	Not informed	Not informed
Highest gear	95.0 in	Not informed	95.0 in	Not informed	Not informed	Not informed
Other specifications
Wheel size	27.5″	29″	650b	27.5″	29″	650b