Giant Road-E+ 1 Pro

2019 RoadEndurance Electric bicycle Manufacturer page

Giant Road-E+ 1 Pro, color Black / Black

Last known price: $4,400

Prices shown first for United States
Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 11 34–50t / 11–32t
Gear range: 428%
Battery: 500 Wh
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 158–171
MD 168–180
LG 178–189
XL 186–199

Components

20 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

ALUXX SL-grade aluminum Not identified

Electric system

3 parts

Suspension

1 part

Fork

Advanced-grade composite, OverDrive2 steerer, 12x100QR Not identified

Drivetrain

6 parts

Brakes

2 parts

Wheels and tires

5 parts

Cockpit and contact points

4 parts

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 377mm

Stack 565mm

Wheelbase 1037mm

Head angle 71.5°

Seat angle 73.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	373	377	387	397
Stackmm	546	565	598	627
Top tube lengthmm	530	545	570	595
Seat tube lengthmm	445	485	530	565
Head tube lengthmm	95	115	150	180
Head tube angle	71.5°	71.5°	71.5°	71.5°
Seat tube angle	74°	73.5°	73°	72.5°
Chainstay lengthmm	455	455	455	455
Wheelbasemm	1027	1037	1058	1078
Front centermm	582	592	612	632
Bottom bracket dropmm	70	70	70	70
Bottom bracket heightmm	266	266	266	266
Standover heightmm	752	785	818	846
Fork rakemm	42	42	42	42
Trailmm	76	76	76	76
Stack/reach ratio	1.46	1.50	1.55	1.58
Suspension and parts
Crank lengthmm	170	170	170	170
Handlebar widthmm	400	420	420	440
Stem lengthmm	90	100	110	110

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

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Carbon

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 34
Largest chainring: 50
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 32
Lowest gear: 30.8 in
Highest gear: 131.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Electric system

Battery capacity: 500 Wh

Additional specifications

Battery: Giant EnergyPak 500, 36V 13.8Ah Rechargeable Lithium-Ion
Tire width: 32c
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

30.8 gear inches

This value is within the central range for this class.

Cohort: Road / Endurance Model year: 2019
Sample: 441 bicycles with this information
Coverage: 90.9% of the class

Highest gear

131.8 gear inches

This value is within the central range for this class.

Cohort: Road / Endurance Model year: 2019
Sample: 441 bicycles with this information
Coverage: 90.9% of the class

Shifting

Mechanical

113 of 485 bicycles with this information use electronic shifting.

Cohort: Road / Endurance Model year: 2019
Sample: 485 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 11.8 km/h
Highest gear: 50.5 km/h

Total gear range 428%

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: 30.8–131.8 gear inches
Class reference (p10–p90): 29.0–133.4 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Endurance Model year: 2019
Lowest gear: 441 bicycles with this information, 90.9% of the class
Highest gear: 441 bicycles with this information, 90.9% of the class