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
Estimated used market value
$2,879 - $2,961
Actual value depends on condition, size, and local demand.
Value Guide market data · 2021 Giant Defy Advanced Pro 1 Di2
12-month projected trend
16%
Direction and magnitude, not judgment
vs. category average
4%
Drops faster than category avg
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
Compare Defy Advanced Pro 1 Di2 models
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Overview
About this bike
Go longer, go faster, and smooth out rough roads with a frameset and integrated components that are engineered for compliance. From gran fondos to epic solo rides, this lightweight composite bike is everything you need for your most challenging days. With the perfect blend of stiffness and compliance, Defy Advanced Pro delivers a smooth, fast ride quality even on rough roads. Its innovative technologies include a D-Fuse composite seatpost and Contact SLR D-Fuse composite handlebar. These integrated cockpit components work as a system to add compliance and reduce road shocks and vibrations. The Advanced-grade composite frame is also integrated for disc brakes, with flat-mount disc brake tabs and 12mm front and rear thru-axles, plus clearance for high-volume tires up to 35mm. The oversized and tapered OverDrive 2 steerer tube boosts cornering precision, while the MegaDrive downtube and PowerCore bottom bracket deliver precise handling and class-leading pedaling efficiency. KEY PERFORMANCE FACTORS Engineered compliance Advanced Composite frame is specifically engineered for endurance road riding, delivering a smoother ride quality and less fatigue on long rides. The D-Fuse seatpost and handlebar system works seamlessly with the frame to absorb road shocks and vibrations. Total control Seamless disc brake integration including flat mounts and 12mm front and rear thru-axles produces more consistent braking power for better control, even in wet weather and rough roads. Versatility Endurance road geometry, added tire clearance (up to 35mm) and disc-brake integration allow you to tackle a variety of roads and conditions, from smooth pavement to rugged backroads and mountain passes.
Specifications
- Subtype
- Performance
- Category
- Road
- Component Fork
- Advanced-Grade Composite, full-composite OverDrive 2 steerer, disc
- Component Hubs
- Giant SLR-1 42 Carbon Disc WheelSystem, 12mm thru-axle
- Component Size
- X-Small, Small, Medium, Medium/Large, Large, X-Large
- Component Stem
- Giant Contact SL
- Product Family
- Defy
- Component Axles
- Front: 100 x 12mm thru axle Rear: 142 x 12mm thru axle
- Component Chain
- KMC X11SL-1
- Component Color
- Chameleon Neptune
- Component Frame
- Advanced-Grade Composite, disc
- Component Tires
- Giant Gavia Fondo 1, tubeless, 700x32c, folding
- Component Brakes
- Shimano Ultegra hydraulic
- Component Pedals
- Sold separately
- Component Saddle
- Contact Fleet SL
- Component Crankset
- Shimano Ultegra, 34/50 with Giant Power Pro power meter
- Component Shifters
- Shimano Ultegra Di2
- Component Seat Post
- Giant D-Fuse SLR, composite
- Component Handlebars
- Giant Contact SLR D-Fuse
- Component Brake Levers
- Shimano Ultegra hydraulic
- Component Bottom Bracket
- Shimano, press fit
- Component Rear Derailleur
- Shimano Ultegra Di2
- Component Front Derailleur
- Shimano Ultegra Di2
- Component Accessories Extras
- Computer mount, tubeless prepared
- Component Cassette Rear Cogs
- Shimano Ultegra, 11x34
- Hubs
- Giant SLR-1 42 Carbon Disc WheelSystem, 12mm thru-axle
- Tires
- Giant Gavia Fondo 1, tubeless, 700x32c, folding
- Crankset
- Shimano Ultegra, 34/50 with Giant Power Pro power meter
- Pedals
- Sold separately
- Bottom Bracket
- Shimano, press fit
- Chain
- KMC X11SL-1
- Saddle
- Contact Fleet SL
- Front Derailleur
- Shimano Ultegra Di2
- Rear Derailleur
- Shimano Ultegra Di2
- Stem
- Giant Contact SL
- Accessories & Extras
- Computer mount, tubeless prepared
- Axles
- Front: 100 x 12mm thru axle Rear: 142 x 12mm thru axle
- Brake Levers
- Shimano Ultegra hydraulic
- Brakes
- Shimano Ultegra hydraulic
- Fork
- Advanced-Grade Composite, full-composite OverDrive 2 steerer, disc
- Frame
- Advanced-Grade Composite, disc
- Handlebars
- Giant Contact SLR D-Fuse
- Seat Post
- Giant D-Fuse SLR, composite
- Shifters
- Shimano Ultegra Di2
- Color
- Chameleon Neptune
- Size
- X-Large
- Cassette/Rear Cogs
- Shimano Ultegra, 11x34
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.