Velopedia Bicycle Archive

2015 Giant Defy Advanced 1

Original manufacturer specifications including Shimano Ultegra drivetrain, 700c wheels, geometry for 6 published sizes.

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What Velopedia knows

Model year
2015
Category
Road
Original MSRP
$2,650.00
Sizes
XS, S, M, M/L, L, XL
Colors
Composite/Orange/Silver, White/Red/Blue
Geometry
6 manufacturer sizes · Geometry context
Record coverage
26 preserved details · archived image · original MSRP · preserved geometry
Archive ID
1342047
Model history 5 other years

Manufacturer catalog

Published sizes and colors

6 sizes · 2 colors

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

Published sizes

XSSMM/LLXL

Published colors

Composite/Orange/SilverWhite/Red/Blue

Frameset

Frame ConstructionAdvanced-grade composite, Electronic ready
Frame MaterialCarbon Fiber
ForkAdvanced-grade composite, Hybrid OverDrive steerer
Fork MaterialCarbon Fiber
Rear ShockN/A

Drivetrain

Component GroupShimano Ultegra
ShiftersShimano Ultegra
Front DerailleurShimano Ultegra
Rear DerailleurShimano Ultegra
CranksetShimano Ultegra, 34/50
Bottom BracketShimano, Press Fit
CassetteShimano Ultegra 11x28, 11-speed
Rear CogsShimano Ultegra 11x28, 11-speed
ChainKMC X11L
PedalsN/A

Brakes

BrakesTRP Spyre, Mechanical disc, 160mm

Cockpit & Contact Points

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

Wheels & Tires

HubsGiant Performance Tracker Road Disc, Sealed bearing, 28h
RimsGiant P-R2 Disc
SpokesSapim Race, 14/15g
Front TireGiant P-R3, Flat Guard Deflect 3, Front and rear specific, 700x25
Rear TireGiant P-R3, Flat Guard Deflect 3, Front and rear specific, 700x25
Wheel Size700c

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 close to the middle of the group. Its wheelbase of 983 mm sits close to the middle of the group.

Compared with 11 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
CassetteMatching configuration
Shimano Ultegra 11x28, 11-speed Interpreted as Shimano Ultegra · 11-speed Component family — verify exact version
Bottom bracketQualified part search
Shimano, Press Fit Named archived component — verify dimensions
CranksetQualified part search
Shimano Ultegra, 34/50 Named archived component — verify exact version
More qualified parts (3)
Front derailleurOne check needed
Shimano Ultegra Interpreted as Shimano Ultegra · 11-speed Named component · published drivetrain speed — verify exact version Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.
Rear derailleurOne check needed
Shimano Ultegra Interpreted as Shimano Ultegra · 11-speed Named component · published drivetrain speed — verify exact version Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.
ShiftersOne check needed
Shimano Ultegra Interpreted as Shimano Ultegra · 11-speed Named component · published drivetrain speed — verify exact version Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.

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 →
  • FrameInspect the frame in bright light, especially around the head tube, bottom bracket, chainstays and clamped areas. Look for cracks, ripples, crushed sections or signs of a previous impact.Inspect the frame and fork →
  • BrakesMake sure both cables move freely and the calipers release cleanly. Check pad thickness, rotor wear and rotor alignment.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 11-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 →
  • Bottom bracketTurn the cranks slowly, feel for rough bearings and check for side-to-side play. Creaking under load deserves investigation but does not identify the source by itself.Inspect the bottom bracket and shell →
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 Advanced 1 · Road · Published sizes: XS, S, M, M/L, L, XL

Archived: Frame: Advanced-grade composite, Electronic ready · Fork: Advanced-grade composite, Hybrid OverDrive steerer · Carbon Fiber

Archived: Group: Shimano Ultegra · Shifters: Shimano Ultegra · Front derailleur: Shimano Ultegra · Rear derailleur: Shimano Ultegra · Crankset: Shimano Ultegra, 34/50 · Bottom bracket: Shimano, Press Fit · Cassette: Shimano Ultegra 11x28, 11-speed · Rear cogs: Shimano Ultegra 11x28, 11-speed · Chain: KMC X11L

Archived: Brakes: TRP Spyre, Mechanical disc, 160mm

Archived: Wheel size: 700c · Rims: Giant P-R2 Disc · Hubs: Giant Performance Tracker Road Disc, Sealed bearing, 28h · Front tire: Giant P-R3, Flat Guard Deflect 3, Front and rear specific, 700x25 · Rear tire: Giant P-R3, Flat Guard Deflect 3, Front and rear specific, 700x25

Controls and contact points

Archived: Handlebar: Giant Contact, 31.8mm · Stem: Giant Connect · Seatpost: Giant D-Fuse, Composite · Saddle: Giant Performance Road

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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