Velopedia Bicycle Archive

2015 Giant Defy 2

Original manufacturer specifications including geometry for 6 published sizes.

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What Velopedia knows

Model year
2015
Category
Road
Original MSRP
$1,105.00
Sizes
XS, S, M, M/L, L, XL
Colors
Charcoal/White/Red
Geometry
6 manufacturer sizes · Geometry context
Record coverage
23 preserved details · archived image · original MSRP · preserved geometry
Archive ID
900002528
Model history 3 other years

Manufacturer catalog

Published sizes and colors

6 sizes · 1 color

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

Published sizes

XSSMM/LLXL

Published colors

Charcoal/White/Red

Frameset

Frame ConstructionALUXX SL-grade aluminum
Frame MaterialAluminum
ForkComposite, Alloy OverDrive steerer
Fork MaterialCarbon Fiber
Rear ShockN/A

Drivetrain

ShiftersShimano Tiagra
Front DerailleurShimano Tiagra
Rear DerailleurShimano Tiagra
CranksetShimano Tiagra, 34/50
Bottom BracketSealed
CassetteShimano Tiagra 12x30, 10-speed
ChainKMC X10
PedalsCaged w/ toe clip and strap

Brakes

BrakesTektro R312

Cockpit & Contact Points

HandlebarGiant Connect, 31.8mm
StemGiant Sport
SaddleGiant Performance Road
SeatpostGiant D-Fuse, Composite

Wheels & Tires

HubsGiant Tracker Sport Road, 26h
RimsGiant S-R2
SpokesStainless Steel, 14g
Front TireGiant S-R4, Front and rear specific, 700x25
Rear TireGiant S-R4, Front and rear specific, 700x25

Size-specific frame data

Geometry

6 sizes · 9 measurements

Manufacturer-published geometry normalized for consistent archival comparison. Effective top tube and reach remain separate measurements because they describe different aspects of fit.

MeasurementXS/43.0S/46.5M/50.0M/L/53.5L/55.5XL/58.5
Top tube515 mm530 mm545 mm560 mm575 mm1511.3 mm
Head tube125 mm145 mm165 mm185 mm205 mm571.5 mm
Head-tube angle71°72°72.5°72.5°72.5°72.5°
Seat-tube angle74°74°73.5°73°73°72.5°
Chainstay / rear center420 mm420 mm420 mm420 mm420 mm1066.8 mm
Wheelbase983 mm990 mm995 mm1007 mm1022 mm2633.98 mm
Reach365 mm373 mm377 mm381 mm390 mm398 mm
Stack523 mm545 mm566 mm585 mm604 mm623 mm
Standover height736.6 mm754.38 mm777.24 mm789.94 mm812.8 mm833.12 mm

Geometry source: Giant first-party size geometry table ↗ Measurements can vary by configuration, wheel size, or flip-chip position where noted by the manufacturer.

Geometry tools

Analyze a published size

Choose a size

XS/43.0 geometry

Archive context: The seat angle of 74° sits toward the more relaxed end. The head angle of 71° sits somewhat steeper than typical. Its wheelbase of 983 mm sits close to the middle of the group.

Compared with 13 distinct road geometries in the XS-equivalent size cohort from model years 2015–2017 in the Velopedia archive.
Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze XS/43.0 geometry

Parts & serviceability

Find replacement parts

3 top part searches
ChainExact archived part
KMC X10 Exact archived model
CassetteMatching configuration
Shimano Tiagra 12x30, 10-speed Interpreted as Shimano Tiagra · 10-speed Component family — verify exact version
Brake padsExact archived part
Tektro R312 Brake model identified — verify pad shape
More qualified parts (4)
CranksetQualified part search
Shimano Tiagra, 34/50 Named archived component — verify exact version
Front derailleurMatching configuration
Shimano Tiagra Interpreted as Shimano Tiagra · 10-speed Named component · published drivetrain speed — verify exact version
Rear derailleurMatching configuration
Shimano Tiagra Interpreted as Shimano Tiagra · 10-speed Named component · published drivetrain speed — verify exact version
ShiftersQualified part search
Shimano Tiagra Interpreted as Shimano Tiagra · 10-speed Named component · published drivetrain speed — verify exact version

Searches use the archived manufacturer specification, not the components currently installed on a particular bicycle. Confirm the exact model, size and fit before ordering. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Commercial relationships do not influence Archive specifications or analysis.

Used-bike inspection

If you’re buying this bike used

Before any test ride: both brakes should stop the bike firmly and release cleanly; both wheels should run true and be securely attached; tires should have no casing damage; and the headset, handlebar, stem, cranks and pedals should have no looseness or play.

Follow the full used-bike inspection order →
  • FrameLook closely for dents and hairline cracks around welds, the head tube and bottom-bracket area. Cosmetic scratches matter less than a change in shape or a crack line.Inspect the frame and fork →
  • BrakesTest each brake separately and confirm it stops firmly and releases cleanly. Inspect the pads and braking surfaces for wear or contamination, and check the cables or hoses for damage.Inspect the brakes →
  • DrivetrainShift through every gear under light load and measure chain wear. Confirm that the shifter, derailleur, chain and cassette belong to the same 10-speed system.Check drivetrain wear →
  • Wheels & tiresSpin both wheels and watch the rims for side-to-side or vertical movement. Check for dents, cracks, loose or uneven spokes and hub play, then inspect both tire casings for cuts, cracking or exposed threads.Check wheels and tires →
Bike-specific inspection checklist 19 checks based on 5 archived component groups Open checklistClose checklist
0 of 19 checked Progress stays in this browser for this bike.

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: 2015 Giant Defy 2 · Road · Published sizes: XS, S, M, M/L, L, XL

Archived: Frame: ALUXX SL-grade aluminum · Fork: Composite, Alloy OverDrive steerer · Carbon Fiber

Archived: Shifters: Shimano Tiagra · Front derailleur: Shimano Tiagra · Rear derailleur: Shimano Tiagra · Crankset: Shimano Tiagra, 34/50 · Bottom bracket: Sealed · Cassette: Shimano Tiagra 12x30, 10-speed · Chain: KMC X10

Archived: Brakes: Tektro R312

Archived: Rims: Giant S-R2 · Hubs: Giant Tracker Sport Road, 26h · Front tire: Giant S-R4, Front and rear specific, 700x25 · Rear tire: Giant S-R4, Front and rear specific, 700x25

Controls and contact points

Archived: Handlebar: Giant Connect, 31.8mm · Stem: Giant Sport · Seatpost: Giant D-Fuse, Composite · Saddle: Giant Performance Road · Pedals: Caged w/ toe clip and strap

Before and during the test ride

Follow the full used-bike inspection order →

Build relationships are limited to the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.

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

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