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Description
giant defy as gravel bike Giant Defy Advanced 1 Frost SilverGiant Defy Advanced 1 (2025) With effortless efficiency and quiet compliance, this lightweight endurance road machine helps you ride stronger and longer. The Advanced grade composite frame and purpose built components smooth out rough roads and minimize fatigue. Key Performance Factors Functional simplicity: A lightweight frameset that blends reactivity with all day comfort for modern endurance riding. Engineered compliance: Advanced grade composite
Giant Defy Advanced 1 (2025)
With effortless efficiency and quiet compliance, this lightweight endurance road machine helps you ride stronger and longer. The Advanced-grade composite frame and purpose-built components smooth out rough roads and minimize fatigue.
Key Performance Factors
- Functional simplicity: A lightweight frameset that blends reactivity with all-day comfort for modern endurance riding.
- Engineered compliance: Advanced-grade composite frame/fork plus D-Fuse components reduce shocks and vibration to cut fatigue.
- Total control: New Contact D-Fuse bar with ergonomic shaping and 8° flare; wide rims optimized for high-volume tubeless tires (up to 38 mm) for predictable handling.
Techs & Features
Links open Giant’s official tech explainers.
Sizing Guide (Rider Height)
- S: 165–175 cm (5’5”–5’9”)
- M: 171–181 cm (5’7”–5’11”)
- ML: 177–187 cm (5’10”–6’2”)
- L: 183–193 cm (6’0”–6’4”)
- XL: 189–199 cm (6’2”–6’6”)
Use as a reference; we’re happy to help confirm your best size.
Geometry (mm/degrees)
| Measurement | S | M | ML | L | XL |
|---|---|---|---|---|---|
| A Seat Tube Length | 445 | 480 | 515 | 535 | 565 |
| B Seat Tube Angle (°) | 74.0 | 73.5 | 73.0 | 73.0 | 73.0 |
| C Top Tube Length | 530 | 545 | 560 | 575 | 595 |
| D Head Tube Length | 140 | 150 | 175 | 195 | 215 |
| E Head Tube Angle (°) | 71.8 | 72.5 | 72.5 | 72.5 | 72.5 |
| F Fork Rake | 50 | 50 | 50 | 50 | 50 |
| G Trail | 63.4 | 58.6 | 58.6 | 58.6 | 58.6 |
| H Wheelbase | 994 | 998 | 1010 | 1025 | 1040 |
| I Chainstay Length | 420 | 420 | 420 | 420 | 420 |
| J BB Drop | 75 | 75 | 70 | 70 | 70 |
| K Stack | 541 | 558 | 577 | 596 | 615 |
| L Reach | 375 | 380 | 384 | 393 | 402 |
| M Standover Height | 733 | 762 | 796 | 814 | 841 |
| N Handlebar Width | 400 | 420 | 420 | 440 | 440 |
| O Stem Length | 90 | 100 | 100 | 110 | 110 |
| P Crank Length | 170 | 172.5 | 172.5 | 175 | 175 |
| Q Wheel Size | 700C | 700C | 700C | 700C | 700C |
Geometry from Giant’s Sizing & Geometry table.
Specifications
| Sizes | XS, S, M, M/L, L, XL |
| Colors | Frost Silver/Cordovan, Solar Flare |
| Frame | Advanced-Grade Composite, 12x142 mm thru-axle, disc |
| Fork | Advanced-Grade Composite, full-composite OverDrive steerer, 12x100 mm thru-axle, disc |
| Handlebar | Giant Contact SL D-Fuse — XS:40/42 cm, S:40/42 cm, M:42/44 cm, M/L:42/44 cm, L:44/46 cm, XL:44/46 cm |
| Grips | Stratus Lite 3.0 |
| Stem | Giant Contact AeroLight — XS:80 mm, S:90 mm, M:100 mm, M/L:100 mm, L:110 mm, XL:110 mm |
| Seatpost | Giant D-Fuse, composite, 14 mm offset |
| Saddle | Giant Approach |
| Pedals | N/A |
| Shifters | Shimano 105 Di2 |
| Front Derailleur | Shimano 105 Di2 |
| Rear Derailleur | Shimano 105 Di2 |
| Brakes | Shimano 105 Di2 hydraulic, Giant MPH rotors [F]160 mm / [R]160 mm |
| Brake Levers | Shimano 105 Di2 |
| Cassette | Shimano 105, 12-speed, 11×36 |
| Chain | KMC X12L-1 |
| Crankset | Shimano 105, 34/50 — XS:170 mm, S:170 mm, M:172.5 mm, M/L:172.5 mm, L:175 mm, XL:175 mm |
| Bottom Bracket | Shimano, press fit |
| Rims | Giant P-R2 Disc wheelset, alloy, [F]25 mm / [R]25 mm |
| Hubs | Giant alloy, 12 mm thru-axle |
| Spokes | Sapim |
| Tires | Giant Gavia Fondo 1, tubeless, 700×32c (33.5 mm), folding |
| Extras | Fender mounts; water bottle cages; tubeless prepared; 38 mm max tire size |
| Max Tire Clearance | 40 mm |
| Weight | 8.67 kg (19 lb 03 oz) — Size ML |
Specs subject to change by the manufacturer.
Questions or fit help? Stop by our Boulder shops or contact us—we’ll get you dialed.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 2188 reviews
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Product Reviews
★★★★★ 4
Cute for coffee bar!
Color: Black, Number Of Shelves: 4, Size: 15.7in
Great for above my coffee bar. Easy to mount and align. Seems stable!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
★★★★★ 5
Great shelves, strong, secure, sturdy, decent size, unbeatable price.
Color: White, Number Of Shelves: 4, Size: 15.7in
Easy installation fits where we wanted them. Stable strong secure snug fit. Cleans easily with dust wipe. I would recommend buying these.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
★★★★★ 3
The shelves sag away from the wall overtime
Color: White, Number Of Shelves: 2, Size: 15.7in, Color: White, Number Of Shelves: 2, Size: 15.7in
Although the wood quality and finish of the shelf are clean and well-made, the main issue is that the shelves begin to sag over time while holding around 10 pounds, even though the product listing claims they can support up to 20 pounds. They may perform better on a brick wall, but on drywall you should be cautious.
To fix the problem, I had to purchase floating shelf brackets for support, which solved the sagging issue. However, this defeats the purpose of the “floating” aesthetic. Since the shelf is in my bedroom, I can overlook it, but I personally wouldn’t install these in a common area if I wanted a clean floating look.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
★★★★★ 5
Love this
Color: Rustic Brown, Number Of Shelves: 4, Size: 15.7in
Love these shelves so easy to put up so beautifully made and really enjoy the way they set on my wall very sturdy also!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
★★★★★ 5
Looks nice, easy to install
Color: Rustic Brown, Number Of Shelves: 2, Size: 22in
This shelf is lightweight, looks nice, and was easy to install. It comes with a little level to help you install it properly. There are plenty of mounting holes to choose from, so it is easy to screw it directly into a stud, or to just use holes that are convenient for you. It comes with a plethora of mounting hardware.
I mounted mine a bit high up and chose to mount it upside down so that I wouldn't see the three screws that hold the shelf to the mounting bracket.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026
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