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2020 Giant Defy Advanced 1

Launched at $2,950

Own a 2020 Giant Defy Advanced 1?

Track its value in your garage, or list it for sale locally in a few taps.

What a used one is worth

New

$1,517

$958 to $1,847

Like new

$1,441

$910 to $1,755

Excellent

$1,365

$862 to $1,662

Good

$1,137

$719 to $1,385

Fair

$834

$527 to $1,016

For parts

$455

$287 to $554

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

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

MSRP as listed on the Giant Group US product page for this model year, accessed 2026-09-21.

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