Giant Roam 1 Disc

2021 UrbanHybrid Manufacturer page

Giant Roam 1 Disc, color Matte Metallic Navy / Gloss Dusty Blue

Fork travel: 63 mm
Wheels: 700c
Drivetrain: 2 × 10 30–46t / 11–42t
Gear range: 585%
Weight: 13.1 kg 28.9 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 160–171
MD 169–181
LG 179–191
XL 189–200

Components

17 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

ALUXX-Grade Aluminum, disc Not identified

Suspension

2 parts

Fork
- SR Suntour
Rear shock

None

Drivetrain

7 parts

Bottom bracket

threaded Not identified
Cassette
- Shimano Deore CS-M4100 10 speeds
CS-M4100CSM-4100
Chain
- KMC X10 10 speeds
Crankset

forged alloy, 30/46 Not identified
Front derailleur
- Shimano Deore
Rear derailleur
- Shimano Deore
Shifters
- Shimano Deore

Brakes

2 parts

Brake levers
- Shimano
BR-MT201
Brakes
- Shimano BL-MT201
BL-MT201

Wheels and tires

5 parts

Cockpit and contact points

5 parts

Handlebar
- Giant
Pedals

platform Not identified
Saddle
- Giant
Seatpost
- Giant
Stem
- Giant

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 410mm

Stack 620mm

Wheelbase 1098mm

Head angle 70.5°

Seat angle 73.0°

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	404	410	416	427
Stackmm	606	620	634	648
Top tube lengthmm	590	600	610	625
Seat tube lengthmm	420	460	500	550
Head tube lengthmm	115	130	145	160
Head tube angle	70.5°	70.5°	70.5°	70.5°
Seat tube angle	73°	73°	73°	73°
Chainstay lengthmm	450	450	450	450
Wheelbasemm	1088	1098	1109	1125
Front centermm	645	655	666	682
Bottom bracket dropmm	62	62	62	62
Standover heightmm	725	756	788	827
Fork rakemm	42	42	42	42
Trailmm	85	85	85	85
Stack/reach ratio	1.50	1.51	1.52	1.52
Suspension and parts
Crank lengthmm	170	170	175	175
Handlebar widthmm	640	680	680	680
Stem lengthmm	70	80	90	100

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

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Bicycle weight: 13.1 kg

28.9 lb

Suspension

Suspension configuration: Hardtail
Front travel: 63 mm

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 30
Largest chainring: 46
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 42
Lowest gear: 20.7 in
Highest gear: 121.3 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire width: 42c
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

2 measures

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

Lowest gear

20.7 gear inches

This value is below the central range for this class.

Cohort: Urban / Hybrid Model year: 2021
Sample: 522 bicycles with this information
Coverage: 74.0% of the class

Highest gear

121.3 gear inches

This value is within the central range for this class.

Cohort: Urban / Hybrid Model year: 2021
Sample: 522 bicycles with this information
Coverage: 74.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.9 km/h
Highest gear: 46.4 km/h

Total gear range 586%

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: 20.7–121.3 gear inches
Class reference (p10–p90): 21.6–126.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Urban / Hybrid Model year: 2021
Lowest gear: 522 bicycles with this information, 74.0% of the class
Highest gear: 522 bicycles with this information, 74.0% 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
Specification	This bicycle Giant Roam 1 Disc	Giant Roam 0 Disc	Giant Roam 2 Disc	Giant Roam 3 Disc	Giant Roam 4 Disc
Frame
Bicycle weight	13.1 kg	12.2 kg	12.5 kg	13 kg	Not informed
Fork material	Not informed	Aluminum	Not informed	Not informed	Not informed
Drivetrain
Front chainrings	2	2	1	2	2
Smallest chainring	30	30	40	30	30
Largest chainring	46	46	40	46	46
Rear sprockets	10	11	9	8	7
Smallest sprocket	11	11	11	11	12
Largest sprocket	42	42	36	34	32
Lowest gear	20.7 in	20.7 in	32.2 in	25.6 in	27.2 in
Highest gear	121.3 in	121.3 in	105.5 in	121.3 in	111.2 in
Brakes
Brake type	Hydraulic disc	Hydraulic disc	Hydraulic disc	Hydraulic disc	Mechanical disc
Other specifications
Bottom bracket standard	BSA	BSA	BSA	Not informed	Not informed
Fork spring	Air	Air	Coil	Coil	Coil

Changes since 2020
Specification	2020 Giant Roam 1 Disc	This bicycle Giant Roam 1 Disc
Frame
Bicycle weight	12.8 kg	13.1 kg
Drivetrain
Smallest chainring	32	30
Largest chainring	44	46
Lowest gear	22.1 in	20.7 in
Highest gear	116.0 in	121.3 in
Other specifications
Bottom bracket standard	Not informed	BSA