Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Giant
2021 Giant Defy Advanced Pro 1 Di2
Value Guide market data · 2021 Giant Defy Advanced Pro 1 Di2
12-month trend
16%
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 2021 Giant Defy Advanced Pro 1 Di2
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. 20212021$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 Pro 1 Di2 lineup
Overview
About this bike
2021 Giant Defy Advanced Pro 1 Di2 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Frame
- Carbon / Advanced-Grade Composite, discBB Standard:BB86/BB92, Press FitTire Clearance:35cColor:Chameleon Neptune
- Fork
- Carbon / Advanced-Grade Composite, full-composite OverDrive 2 steerer, disc
Drivetrain
- Drivetrain
- 2 × 11 Electronic
- Groupset
- Ultegra Di2
- Bottom Bracket
- Shimano, press fit
- Rear Derailleur
- Shimano Ultegra Di2
- Front Derailleur
- Shimano Ultegra Di2
- Crank
- Shimano Ultegra, 34/50 with Giant Power Pro power meter
- Shifters
- Shimano Ultegra Di2
- Cassette
- Shimano Ultegra, 11x34
- Chain
- KMC X11SL-1
Brakes
- Brakes
- Shimano Ultegra Hydraulic Disc / Shimano Ultegra hydraulicType:Shimano Ultegra Hydraulic Disc
- Brake Levers
- Shimano Ultegra hydraulic
Cockpit
- Stem
- Giant Contact SL
- Handlebar
- Giant Contact SLR D-Fuse, composite
- Saddle
- Giant Fleet SL, composite base, SST rails, UniClip accessory mount
- Seatpost
- Giant D-Fuse SLR, compositeType:Rigid
Wheels & Tires
- Wheels
- 700c Carbon
- Rims
- Giant SLR-1 Carbon Disc WheelSystem, 42mm
- Spokes
- Giant SLR-1 WheelSystem, DBL technology
- Front Hub
- Giant SLR-1 Disc WheelSystem, 12mm thru-axle
- Rear Hub
- Giant SLR-1 Disc WheelSystem, 12mm thru-axle
- Tires
- Giant Gavia Fondo 1, tubeless, 700x32c, folding
Accessories
- Power Meter
- Giant Power Pro / Shimano Ultegra, 34/50 with Giant Power Pro power meter
Frame sizing
XSManufacturer sizing
SMManufacturer sizing
MDManufacturer sizing
MD/LGManufacturer sizing
LGManufacturer sizing
XLManufacturer sizing
MD/LG highlighted as most common resale size. Sourced from catalog metadata.
Geometry
- Stack
- 586
- Reach
- 381
- Top Tube Length
- 560
- Seat Tube Length
- 515
- Chainstay Length
- 420
- Wheelbase
- 1,010
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.