Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Giant
2021 Giant Defy Advanced 1
Value Guide market data · 2021 Giant Defy Advanced 1
12-month trend
14%
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 2021 Giant Defy Advanced 1
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Defy model years
2024$11,160 - $12,960▲ 85% vs. 2021
2023$6,045 - $7,0200% vs. 2021
2022$6,045 - $7,0200% vs. 2021
2021$6,045 - $7,020Currently viewing
2020$7,254 - $8,424▲ 20% vs. 2021
2019$5,175 - $6,010▼ 14% vs. 2021
2018$8,537 - $9,914▲ 41% vs. 2021
2017$4,371 - $5,076▼ 28% vs. 2021
2016$7,719 - $8,964▲ 28% vs. 2021
2015$9,579 - $11,124▲ 58% vs. 2021
2014$8,161 - $9,477▲ 35% vs. 2021
2013$6,417 - $7,452▲ 6% vs. 2021
2012$6,417 - $7,452▲ 6% vs. 2021
2011$5,441 - $6,318▼ 10% vs. 2021
2010$5,162 - $5,994▼ 15% vs. 2021
2009$3,302 - $3,834▼ 45% vs. 20212021 Defy Advanced 1 lineup
Overview
About this bike
2021 Giant Defy Advanced 1 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork
- Advanced-Grade Composite, full-composite OverDrive steerer, disc
- Frame
- Advanced-Grade Composite, disc
Drivetrain
- Groupset
- 2021 Giant Defy Advanced 1
- Crankset
- Shimano FC-RS510
- Bottom Bracket
- Shimano, press fit
- Chain
- KMC X11EL-1
- Front Derailleur
- Shimano Ultegra
- Rear Derailleur
- Shimano Ultegra
- Cassette/Rear Cogs
- Shimano Ultegra, 11x34
- Chainrings
- 34/50T
- Shifters
- Shimano Ultegra
Brakes
- Brake Levers
- Shimano Ultegra hydraulic
- Brakes
- Shimano Ultegra hydraulic
Cockpit
- Saddle
- Giant Approach
- Stem
- Giant Contact
- Handlebars
- Giant Contact SL D-Fuse
- Seat Post
- Giant D-Fuse, composite
Wheels & Tires
- Hubs
- Giant P-R2 Disc wheelset, 12mm thru-axle
- Tires
- Giant Gavia Fondo 1, tubeless, 700x32c, folding
- Spokes
- Giant P-R2 Disc wheelset
Accessories
- Accessories & Extras
- Tubeless prepared
- Rims/Wheels
- Giant P-R2 Disc wheelset
- Color
- Carbon / Moss Green
Weight & Sizing
- Size
- Small / Medium / Medium/Large / Large / X-Large
Frame sizing
XS4'10"-5'2"
S5'2"-5'6"
M5'6"-5'10"
L5'10"-6'2"
XL6'2"-6'6"
M highlighted as most common resale size. Sourced from catalog metadata.
Geometry
- Stack
- Varies by size
- Reach
- Varies by size
- Wheelbase
- Varies by size
Industry standard. Sourced from catalog metadata.
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Wheel condition
Inspect rims, hubs, spokes, and bearing play; ask about the tire age and any prior wheel rebuilds.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.
Inspection
Carbon inspection
Tap test the frame, fork, seatpost, and bars for cracks; verify no impact damage near dropouts.
Inspection
Brake hoses & cables
Check hydraulic line bleed, cable housing wear, and confirm rotors are within spec.