Bergamont E-Grandurance RD 8

2025 RoadGravel Electric bicycle Manufacturer page

Bergamont E-Grandurance RD 8, color Matt Flaky Beige

Price: Not published

Prices shown first for United States
United Kingdom: £4,599 Last known price
Suspension: Rigid
Wheels: 700c
Drivetrain: 1 × 11 44t / 11–42t
Gear range: 382%
Battery: 360 Wh
Weight: 17.7 kg 39.0 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

27 of 29 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

28", ultra lite AL-6061 tubing, integrated battery Not identified

AL-6061

Electric system

4 parts

Battery
- TQ
TQ-HPR50
Charger
- TQ
Display
- TQ
Motor
- TQ
TQ-HPR50

Suspension

1 part

Fork
- BGM

Drivetrain

6 parts

Bottom bracket
- TQ
Cassette
- Shimano Deore CS-M5100-11 11 speeds 11–42t
CS-M5100-11CS-M5100
Chain
- KMC
Crankset
- FSA 44t
CK-746
Rear derailleur
- Shimano GRX RD-RX812 11 speeds
RD-RX812
Shifters
- Shimano GRX ST-RX600
ST-RX600

Brakes

3 parts

Wheels and tires

5 parts

Front hub
- BGM
Rear hub
- BGM
Rims
- Ryde
Spokes

stainless, black Not identified
Tires
- Schwalbe G-One Allround

Cockpit and contact points

7 parts

Other components

3 parts

Sizes and geometry

5 sizes Open in the geometry plotter

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

Size LG

Table

Geometry diagram unavailable

The drawing needs head tube angle and seat tube angle, which the manufacturer did not publish. Available facts remain in the table.

Size Reach Stack

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	380	390	400	410	420
Stackmm	560	579	598	617	636
Top tube lengthmm	530	545	560	575	590
Seat tube lengthmm	485	510	535	560	585
Head tube lengthmm	120	140	160	180	200
Chainstay lengthmm	435	435	435	435	435
Wheelbasemm	1041	1058	1075	1091	1108
Front centermm	616	633	649	665	682
Bottom bracket dropmm	70	70	70	70	70
Bottom bracket heightmm	279	279	279	279	279
Standover heightmm	774	796	817	839	861
Fork rakemm	50	50	50	50	50
Stack/reach ratio	1.47	1.49	1.50	1.51	1.51

Not published by the manufacturer: Head tube angle, Seat tube angle, 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: Carbon
Bicycle weight: 17.7 kg

39.0 lb
Weight limit: 135 kg

297.6 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 44
Largest chainring: 44
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 42
Lowest gear: 30.4 in
Highest gear: 116.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Electric system

Battery capacity: 360 Wh

Additional specifications

Battery: TQ-HPR50 integrated DT battery, 50.4 V Li Ion, 360 Wh
Tire width: 40c
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

3 measures

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

Lowest gear

30.4 gear inches

This value is above the central range for this class.

Cohort: Road / Gravel Model year: 2025
Sample: 1,536 bicycles with this information
Coverage: 76.6% of the class

Highest gear

116.0 gear inches

This value is within the central range for this class.

Cohort: Road / Gravel Model year: 2025
Sample: 1,536 bicycles with this information
Coverage: 76.6% of the class

Shifting

Mechanical

688 of 1,999 bicycles with this information use electronic shifting.

Cohort: Road / Gravel Model year: 2025
Sample: 1,999 bicycles with this information
Coverage: 99.7% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 11.6 km/h
Highest gear: 44.4 km/h

Total gear range 382%

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: 30.4–116.0 gear inches
Class reference (p10–p90): 22.8–126.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Gravel Model year: 2025
Lowest gear: 1536 bicycles with this information, 76.6% of the class
Highest gear: 1536 bicycles with this information, 76.6% 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 Bergamont E-Grandurance RD 8	Bergamont E-Grandurance 7	Bergamont E-Grandurance Elite	Bergamont E-Grandurance RD Expert
Frame
Frame material	Aluminum	Aluminum	Carbon	Carbon
Bicycle weight	17.7 kg	16.3 kg	14.3 kg	15.7 kg
Drivetrain
Rear sprockets	11	11	12	12
Smallest sprocket	11	11	10	10
Largest sprocket	42	42	45	45
Lowest gear	30.4 in	30.4 in	28.4 in	28.4 in
Highest gear	116.0 in	116.0 in	127.6 in	127.6 in
Cockpit
Seatpost	Rigid seatpost	Rigid seatpost	Dropper seatpost	Rigid seatpost
Other specifications
Tire width	40c	45c	45c	40c