The Giant Defy Advanced SL 1 is a lightweight endurance road bike for long-distance comfort and speed.
Engineered for endurance, the Giant Defy Advanced SL 1 is built to conquer long-distance rides with unmatched efficiency, compliance, and lightweight performance. Whether you're targeting your next Gran Fondo, sportive, or extended road adventure, this premium endurance road bike offers the perfect blend of speed, comfort, and control.
Ultra-Light, Minimalist Design
Crafted from Advanced SL-grade carbon, this frameset is one of the lightest in its class. Its "less is more" design approach ensures high-performance responsiveness without unnecessary complexity, delivering a clean, streamlined ride ideal for modern endurance cyclists.
Optimised Comfort & Compliance
Purpose-built for long days in the saddle, the Defy SL 1 features a frame and fork engineered for shock absorption and vibration damping. The integrated D-Fuse seatpost and handlebar system works in harmony to smooth out rough road surfaces, reducing fatigue and increasing comfort mile after mile.
Precision Control for All Conditions
The bike’s newly designed Contact D-Fuse handlebar includes ergonomic shaping and an 8-degree flare for added control and stability. Coupled with wide hookless carbon wheels (22.4mm internal width) and support for tubeless tyres up to 38mm, you'll experience confident handling, even in variable terrain or strong crosswinds.
Advanced SL-Grade Composite Frame
Built with pro-level carbon fibre woven in Giant’s own composite facility, this frame offers a superior stiffness-to-weight ratio and high-performance durability. It’s the same carbon technology trusted by Giant’s world-class race teams.
PowerCore Bottom Bracket
A fully integrated, oversized bottom-bracket and chainstay area maximises pedaling efficiency. Asymmetric chainstays enhance drivetrain stiffness while maintaining balanced stability on the non-drive side.
OverDrive Aero Integration
The aerodynamic D-shaped steerer tube and internally routed cables deliver a sleek front-end profile that enhances airflow and reduces drag. It’s also easier to service, keeping maintenance simple and streamlined.
Compact Road Geometry
Pioneered by Giant, the Compact Road Design features a sloping top tube for improved fit across all sizes. This design reduces frame weight and increases stiffness for a snappier, more efficient ride.
D-Fuse Compliance System
The D-Fuse handlebar and seatpost are designed as a unified system to soak up vibrations and road chatter. This technology helps you ride further and faster without compromising performance or control.
Perfect For:
- Endurance cyclists and distance riders
- Gran Fondo and sportive events
- Road riders who prioritise comfort without sacrificing performance
- Cyclists looking for lightweight, compliant, and aerodynamic road bikes
The Giant Defy Advanced SL 1 stands out as one of the most refined and performance-oriented endurance road bikes on the market. With a featherlight frame, aerodynamic detailing, and ride-smoothing compliance technologies, it's designed for riders who demand comfort, speed, and efficiency over the longest and most challenging road rides.