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2021 Giant FastRoad SL 3

Original specifications: geometry for 5 published sizes.

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At a glance

Model year
2021
Category
Road
Original MSRP
$960.00
Sizes
S, M, ML, L, XL
Colors
Metallic Black/Chrome
Geometry
5 manufacturer sizes
In this record
22 specifications · 8 archived images · original MSRP · geometry
Archive ID
900003053
Original buildAluminum

Manufacturer catalog

Published sizes and colors

5 sizes · 1 color

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

SMMLLXL

Published colors

Metallic Black/Chrome

Frameset

Frame ConstructionALUXX SL-Grade Aluminum
Frame MaterialAluminum
ForkAdvanced-Grade Composite, alloy OverDrive steerer
Fork MaterialCarbon Fiber

Drivetrain

ShiftersShimano Claris
Front DerailleurShimano Claris
Rear DerailleurShimano Claris
CranksetProWheel Ounce 521C, 34/50
Bottom Bracketcartridge
CassetteShimano CS-HG41, 11x34
ChainKMC Z8.3
Pedalsplatform pedal

Brakes

BrakesTektro HD-R280

Cockpit & Contact Points

HandlebarGiant Sport, flat
StemGiant Sport
SaddleGiant Approach
SeatpostGiant D-Fuse, alloy

Wheels & Tires

HubsGiant GX wheelset
RimsGiant GX wheelset
SpokesGiant GX wheelset
Front TireGiant S-R3 AC, puncture protect, 700x32c
Rear TireGiant S-R3 AC, puncture protect, 700x32c

Geometry

5 sizes · 17 measurements

Frame measurements by size.

All geometry measurements5 sizes · 17 measurements
MeasurementSMMLLXL
Seat tube445 mm460 mm490 mm520 mm550 mm
Top tube545 mm560 mm575 mm595 mm615 mm
Head tube130 mm155 mm180 mm200 mm225 mm
Head-tube angle71.5°72°72°72.5°72.5°
Seat-tube angle73.5°73°73°72.5°72.5°
Chainstay / rear center425 mm425 mm425 mm425 mm425 mm
Wheelbase1014 mm1020 mm1035 mm1045 mm1065 mm
Bottom-bracket drop70 mm70 mm70 mm70 mm70 mm
Reach386 mm388 mm395 mm403 mm416 mm
Stack537 mm563 mm586 mm607 mm631 mm
Standover height697 mm719 mm741 mm767 mm795 mm
Fork offset / rake50 mm50 mm50 mm50 mm50 mm
Trail64.7 mm61.5 mm61.5 mm58.2 mm58.2 mm
Crank length170 mm170 mm170 mm175 mm175 mm
Stem length90 mm100 mm100 mm110 mm110 mm
Handlebar width580 mm620 mm620 mm620 mm620 mm
Wheel size700C700C700C700C700C

Dimensions as recorded.

Gearing

Lower gears help on climbs. Higher gears suit higher speeds.

RPM

RPM = pedal turns per minute.

All published sizes50/34T · 11–34T
Lowest1.00:1 Highest4.55:1 Total range455%
Estimated speed At 90 RPM Lowest gear7.2 mph Highest gear32.9 mph

Rear tire: 700C×32.

How it works

Ratio = chainring teeth ÷ rear sprocket teeth. A 400% range means the highest ratio is four times the lowest.

Speeds are estimates from tire size and pedal cadence. Actual speeds vary.

Try other gearing

Bike-specific inspection checklist 19 checks based on 5 archived component groups Open checklistClose checklist
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This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.

Archived: 2021 Giant FastRoad SL 3 · Road · Published sizes: S, M, ML, L, XL

Archived: Frame: ALUXX SL-Grade Aluminum · Fork: Advanced-Grade Composite, alloy OverDrive steerer · Carbon Fiber

Archived: Shifters: Shimano Claris · Front derailleur: Shimano Claris · Rear derailleur: Shimano Claris · Crankset: ProWheel Ounce 521C, 34/50 · Bottom bracket: cartridge · Cassette: Shimano CS-HG41, 11x34 · Chain: KMC Z8.3

Archived: Brakes: Tektro HD-R280

Archived: Rims: Giant GX wheelset · Hubs: Giant GX wheelset · Front tire: Giant S-R3 AC, puncture protect, 700x32c · Rear tire: Giant S-R3 AC, puncture protect, 700x32c

Controls and contact points

Archived: Handlebar: Giant Sport, flat · Stem: Giant Sport · Seatpost: Giant D-Fuse, alloy · Saddle: Giant Approach · Pedals: platform pedal

Before and during the test ride

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Gallery8 images

Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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