RoadPartial spec

2021 Giant Defy Advanced 1

Lists today at $3,650 (2026-09)

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What a used one is worth

Open the value tool

New

$2,040

$1,317 to $2,457

Like new

$1,938

$1,251 to $2,334

Excellent

$1,836

$1,185 to $2,212

Good

$1,530

$988 to $1,843

Fair

$1,122

$724 to $1,352

For parts

$612

$395 to $737

From the launch price, aged to 2026 and adjusted for condition. Guidance from our catalog, not an appraisal.

Overview

Brand: Giant
Model family: Defy
Model year: 2021
Category: Road · endurance
Frame material: carbon
Sizes: XS, S, M, ML, L, XL
Wheel size: 700c
Current list price: $3,650 (as of 2026-09)

Drivetrain

Speeds: 11
Groupset: Shimano Ultegra
Electronic: false

Build

Fork: Advanced-Grade Composite, full-composite OverDrive steerer, disc
Stem: Giant Contact
Tires: Giant Gavia Fondo 1, tubeless, 700x32c, folding
Brakes: Shimano Ultegra hydraulic (F:160mm, R:140mm)
Saddle: Giant Approach, UniClip accessory mount
Wheels: Giant P-R2 Disc wheelset
Cassette: Shimano Ultegra, 11-speed, 11x34
Crankset: Shimano RS510, 34/50
Seatpost: Giant D-Fuse, composite
Shifters: Shimano Ultegra
Handlebar: Giant Contact SL D-Fuse
Rear derailleur: Shimano Ultegra

Geometry

L: Reach mm: 390; Stack mm: 605; Chainstay mm: 420; Wheelbase mm: 1025; Head angle deg: 72.5; Seat angle deg: 73
M: Reach mm: 377; Stack mm: 567; Chainstay mm: 420; Wheelbase mm: 998; Head angle deg: 72.5; Seat angle deg: 73.5
S: Reach mm: 374; Stack mm: 546; Chainstay mm: 420; Wheelbase mm: 995; Head angle deg: 71.8; Seat angle deg: 74
ML: Reach mm: 381; Stack mm: 586; Chainstay mm: 420; Wheelbase mm: 1010; Head angle deg: 72.5; Seat angle deg: 73
XL: Reach mm: 398; Stack mm: 624; Chainstay mm: 420; Wheelbase mm: 1040; Head angle deg: 72.5; Seat angle deg: 72.5

Last Giant US MSRP shown on the archived model-year page, observed 2026-09-21; not the launch MSRP (Giant changed this model year's price after launch). Price labels fixed 2026-09-27: moved $3,650 from msrp_usd to list_price_usd (as of 2026-09) and set msrp_usd to null per the Giant model-year price audit.

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