Giant FastRoad AR 2

2025 UrbanFitness Manufacturer page

Giant FastRoad AR 2, color Glacier Silver

Last known price: $1,150

Prices shown first for United States
Suspension: Rigid
Wheels: 700c
Drivetrain: 1 × 9 42t / 11–41t
Gear range: 373%
Weight: 9.83 kg 21.7 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 160–171
MD 169–180
MD/LG 175–185
LG 180–191
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, 12x142mm thru-axle, disc Not identified

Suspension

2 parts

Fork

Advanced-grade composite, composite OverDrive steerer, 12x100mm thru-axle, disc Not identified
Rear shock

None

Drivetrain

7 parts

Bottom bracket

threaded Not identified
Cassette
- Shimano CS-LG300-9 9 speeds
CS-LG300CS-LG3009
Chain
- Shimano CN-LG500
CN-LG500
Crankset
- FSA Omega 42t
Front derailleur

None
Rear derailleur
- Shimano Cues
Shifters
- Shimano Cues SL-U4000
SL-U4000

Brakes

2 parts

Brake levers
- Tektro HD-R280
HD-R280
Brakes
- Tektro HD-R280
HD-R280

Wheels and tires

5 parts

Cockpit and contact points

6 parts

Grips
- Giant
Handlebar
- Giant
Pedals

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

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD/LG

Table

Reach 407mm

Stack 597mm

Wheelbase 1069mm

Head angle 71.0°

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 5 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	396	404	407	419	432
Stackmm	552	578	597	623	646
Top tube lengthmm	560	575	590	610	630
Seat tube lengthmm	455	475	495	525	555
Head tube lengthmm	130	155	175	200	225
Head tube angle	70.5°	71°	71°	71.5°	71.5°
Seat tube angle	73.5°	73.5°	73°	73°	73°
Chainstay lengthmm	435	435	435	435	435
Wheelbasemm	1047	1058	1069	1084	1105
Front centermm	623	634	645	660	681
Bottom bracket dropmm	75	75	75	75	75
Standover heightmm	736	756	773	800	826
Fork rakemm	50	50	50	50	50
Trailmm	73.7	70.4	70.4	67.1	67.1
Stack/reach ratio	1.39	1.43	1.47	1.49	1.50
Suspension and parts
Crank lengthmm	170	170	172.5	172.5	172.5
Handlebar widthmm	640	680	680	680	680
Stem lengthmm	80	90	90	100	110

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
Fork material: Carbon
Bicycle weight: 9.83 kg

21.7 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 42
Largest chainring: 42
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 41
Lowest gear: 29.7 in
Highest gear: 110.7 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
Tire clearance: Maximum tire width: 42c
Tire width: 40c
Travel: Rear: Additional specification: Not available: Yes
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

29.7 gear inches

This value is above the central range for this class.

Cohort: Urban / Fitness Model year: 2025
Sample: 230 bicycles with this information
Coverage: 81.8% of the class

Highest gear

110.7 gear inches

This value is within the central range for this class.

Cohort: Urban / Fitness Model year: 2025
Sample: 230 bicycles with this information
Coverage: 81.8% of the class

Shifting

Mechanical

13 of 281 bicycles with this information use electronic shifting.

Cohort: Urban / Fitness Model year: 2025
Sample: 281 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 11.4 km/h
Highest gear: 42.4 km/h

Total gear range 373%

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: 29.7–110.7 gear inches
Class reference (p10–p90): 21.8–131.8 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Urban / Fitness Model year: 2025
Lowest gear: 230 bicycles with this information, 81.8% of the class
Highest gear: 230 bicycles with this information, 81.8% 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 Giant FastRoad AR 2	Giant FastRoad AR 1	Giant FastRoad AR Advanced 1	Giant FastRoad AR Advanced 2
Frame
Frame material	Aluminum	Aluminum	Carbon	Carbon
Bicycle weight	9.83 kg	Not informed	Not informed	9.73 kg
Drivetrain
Rear sprockets	9	11	12	10
Largest sprocket	41	45	44	48
Lowest gear	29.7 in	27.1 in	27.7 in	25.4 in
Other specifications
Bottom bracket standard	BSA	BSA	Not informed	Not informed