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2025
Giant Defy Advanced SL 1
Go long. Go fast. Superlight and silky smooth, the flagship series of the new defy range is back to reclaim its title as the pinnacle of endurance road. It’s the perfect choice for the sportive or gran fondo that’s circled on your calendar.
Highlights
Functional simplicity
Free of cumbersome gimmickry, the frameset is one of the lightest in its category. With a perfect balance of high-performance reactivity and all-day comfort, it offers a “less is more” experience for modern endurance road riding.
Engineered compliance
Advanced SL-grade composite frame and fork are specifically engineered for endurance road riding, delivering a smooth and efficient ride quality that minimises fatigue on long rides. The new D-Fuse components work together to further absorb road shocks and vibrations.
Total control
A new Contact D-Fuse handlebar features ergonomic shaping and an 8-degree flare for comfort and control on all-day rides. Wide, hookless carbon rims (22.4mm inner width) are optimised for high-volume tubeless tyres (up to 38mm), and a 36mm rim depth offers stable, predictable handling in crosswinds.
Geometry
| S | M | |
|---|---|---|
| Seat Tube Length | S445 | M480 |
| Seat Tube Angle | S74.0° | M73.5° |
| Top Tube Length | S530 | M545 |
| Head Tube Length | S140 | M150 |
| Head Tube Angle | S71.75° | |
| Fork Rake (mm) | S50 | |
| Trail | S63.4 | |
| Wheelbase | S994.4 | |
| Chain Stay Length | S420 | |
| Bottom Bracket Drop | S75 | |
| Stack | S541 | |
| Reach | S374.9 | |
| Stand Over Height | S733 | |
| Stem Length | S90 | |
| Crank Length | S170.0 | |
| Wheel Size | S700C |
Technical specifications
| Size | XS, S, M, M/L, L, XL |
| Colours | Moonstone |
| Frame | Advanced SL-Grade Composite, disc |
| Fork | Advanced SL-Grade Composite, full-composite OverDrive Aero steerer, disc |
| Shock | N/A |
| Handlebar | Giant Contact SLR D-Fuse XS:40cm, S:40cm, M:42cm, M/L:42cm, L:44cm, XL:44cm |
| Grips | Stratus Lite 3.0 |
| Stem | Giant Contact SLR AeroLight XS:80mm, S:90mm, M:100mm, M/L:100mm, L:110mm, XL:110mm |
| Seatpost | Giant D-Fuse SLR, composite, -5/+15mm offset |
| Saddle | Giant Fleet SLR |
| Pedals | N/A |
| Shifters | SRAM Force eTap AXS |
| Front Derailleur | SRAM Force eTap AXS |
| Rear Derailleur | SRAM Force eTap AXS |
| Brakes | SRAM Force eTap AXS hydraulic, SRAM CenterLine XR rotors [F]160mm, [R]160mm |
| Brake Levers | SRAM Force eTap AXS hydraulic |
| Cassette | SRAM Force, 12-speed, 10x36 |
| Chain | SRAM Force D1 |
| Crankset | SRAM Force D2 DUB, 33/46 with Quarq DZero power meter XS:170mm, S:170mm, M:172.5mm, M/L:172.5mm, L:175mm, XL:175mm |
| Bottom Bracket | SRAM DUB, press fit |
| Rims | Giant SLR 1 36 Carbon Disc WheelSystem |
| Hubs | [F] Giant Low Friction Hub, CenterLock, 12mm thru-axle [R] Giant Low Friction Hub, 30t ratchet driver, CenterLock, 12mm thru-axle |
| Spokes | Sapim CX-Ray |
| Tires | CADEX Classic, tubeless, 700x32c (33.5mm), folding |
| Extras | Computer mount, water bottle cages, tubeless prepared, 38mm max tyre size |
| Weight | The most accurate way to determine any bike’s weight is to have your local dealer weigh it for you. Many brands strive to list the lowest possible weight, but in reality weight can vary based on size, finish, hardware and accessories. All our bikes are designed for best-in-class weight and ride quality. |
