2017 Giant Defy Advanced Pro

Superior engineering for a silky smooth ride. Maximize your performance on your longest, hardest road rides.

Find a Test Ride


  • OverDrive 2

    Designed to offer unprecedented steering performance, the system’s oversized headset bearings (1 1/2” lower, 1 1/4” upper) and tapered steerer tube work in harmony to provide supreme steering stiffness.

  • Advanced Grade Composite Fork

    A fork and steerer tube constructed entirely using Giant’s Advanced-grade composite for lightweight and superior ride quality and steering precision.

  • Internal Cable Routing

    Frame features unique internal cable porting for sleek, uncluttered appearance and performance.

  • MegaDrive

    A massive rectangular downtube forms the link between the oversized OverDrive 2 system and the PowerCore bottom bracket. This precisely engineered, rectangular shape yields unprecedented steering and pedaling stiffness while minimizing weight.

  • PowerCore

    A massively oversized bottom-bracket/chainstay area features a fully integrated, 86-millimeter-wide bottom-bracket design. Asymmetric chainstays provide additional stiffness on the driveside and stability on the non-driveside.

  • D-Fuse Seatpost

    The proprietary “D” shaped composite seatpost dampens vibration—resulting in a smooth, compliant ride.

  • Advanced Grade Composite

    High Peformance Grade raw carbon fiber and Giant’s proprietary resin formula is used to produce custom composite material in our own composite factory that is extremely lightweight, stiff and compliant.

  • Disc Brake Integration

    Frame is engineered with flat-mount disc brake integration for superior braking performance in all weather and road conditions.

  • RideSense

    Giant’s chainstay-integrated, wireless data transmitter. The fully integrated, removable transmitter sends wheel speed and cadence information directly to an ANT+ compatible computer.