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Today’s Deals2025 Giant
Defy Advanced SL Frameset
A carbon frame endurance frameset.
5'1" – 5'7"
5'4" – 5'9"
5'7" – 6'0"
5'9" – 6'2"
6'0" – 6'4"
6'2" – 6'7"
- 6'1", size Large, Just right
- 6'0", size MD/LG, Just right
- 5'8", size SM, Just right
- 5'7", size SM, Just right
- 5'10", size MD, Just right
- 6'0", size MD/LG, Just right
- 6'1", size ML, Too small
- 5'9", size Small, Just right
- 5'8", size MD, Too large
- 5'7", size MD, Just right
- 6'0", size LG, Fits large
- 6'0", size MD, Just right
- 5'5", size SM, Just right
- 5'8", size MD, Just right
- 6'0", size LG, Just right
- 5'8", size MD, Fits large
Summary
The Giant Defy is a lightweight and efficient endurance bike that excels in comfort and handling, making it suitable for a variety of road conditions. It features a balanced ride with quick acceleration and stability, though some reviews note handling can be too quick for some preferences. The design prioritizes rider comfort with features like the D-Fuse seatpost and ample tire clearance.
Lightweight and efficient
Comfortable ride quality
Balanced handling
Quick acceleration
Ample tire clearance
Handling can be too quick or nervous
Proprietary components limit customization
Some stiffness in the front end
Mechanical Shimano 105 is a superb groupset – accurate, smooth and ergonomically excellent.
BikeRadarGiant has struck an excellent balance to keep the Defy confident without it becoming dull.
CyclistIt’s as light as many brands’ flagship road racers and feels just as efficient.
Escape CollectiveThe GIANT Defy Advanced SL is a sporty all-road bike for everything from poorly maintained asphalt to well-groomed woodland paths.
Gran Fondo MagazineFeedback?
View all reviews
Aug 2025
Stunning performance – a great blend of stiffness and comfort without compromising engagement between bike and rider
Comfortable riding position
Fast in a real-world sense
SRAM Force groupset gives wide spread of gears
Cadex tyres aren't the liveliest
Apr 2024 · Martin Staffa
Lightweight, comfortable, and fast. The 5th generation of the GIANT Defy promises all this and more. Can the endurance bike deliver, or is its beauty just skin deep?
Racy, stylish, and modern look
Efficient acceleration
Excellent climber
High fun factor
Lack of attention to some small details like the stem bolts
Bar tape is too short
Mar 2024 · Sam Challis
While many of the big brands are turning their endurance road bikes into more rugged ‘all-road’ bikes, Giant has gone
Comfort
Light weight
Lively ride feel
Easy handling
Expansive spec range
Size range could be wider
Proprietary steerer limits stem choice
Sep 2023 · Warren Rossiter
The fast, flighty, flagship Defy is pure road bike heaven
Light
Smooth
Superbike specification
Sublime handling
Press fit bottom bracket may divide opinion
Sep 2023 · James Huang
Giant’s fifth-generation premium carbon fiber endurance road bike, updated with a lighter chassis, additional tire clearance, and a more refined ride quality.
Impressively lightweight
Composed ride quality
Quick handling
Some semblance of cockpit customization
Looks brilliant.
Composed-but-not-cushy ride quality
Handling is arguably too quick
Questionable wheelset spec
Still a proprietary stem.
Sep 2023 · Troy Templin
The Giant Defy is for going longer. It’s for climbing higher, riding faster, and doing it all with confidence and smooth control.
| Frame | Advanced SL-Grade Composite, 12x142mm thru-axle, integrated seatpost, disc Tire Clearance: 40c Colors: Raw Carbon / Airglow; Arctic Blast |
|---|---|
| Fork | Advanced SL-Grade Composite, full-composite OverDrive Aero steerer, 12x100mm thru-axle, disc |
| Shock | N/A |
| Bottom Bracket | N/A |
| Headset | N/A |
| Stem | N/A |
| Handlebar | N/A |
| Saddle | N/A |
| Seatpost | Giant D-Fuse SLR, composite, -5/+15mm offset Type: Rigid |
| Pedals | N/A |
| Grips | N/A |
| Rear Derailleur | N/A |
|---|---|
| Front Derailleur | N/A |
| Crank | N/A |
| Shifters | N/A |
| Cassette | N/A |
| Chain | N/A |
| Brakes | N/A |
| Brake Levers | N/A |
| Spokes | N/A |
|---|---|
| Front Hub | N/A |
| Rear Hub | N/A |
| Tires | N/A |
First added August 3
Last updated May 30