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Giant Defy Advanced Pro 0

Giant Defy Advanced Pro 0
Gun Metal Black/Iris
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Yes, you read that right. The Gant Defy Advanced Pro 0 is equipped with a watt-measuring dual-sided power meter straight out of the box.

There is, of course, plenty more that Giant can brag about with the Defy Advanced Pro 0. Lots more...

The Defy series of road bikes was designed to carry a rider over less-than-perfect surfaces, keeping them fresh for a final climb or finish line sprint. This is the Defy flagship for 2019, built around Giant's own Advanced-Grade Composite carbon fiber frame and fork. Astonishing lightness and an upright fit are only the opening features of the Defy Advanced Pro 0's frameset. The frameset's carbon fiber "recipe" was redone for 2019 to provide a more compliant ride and improved torsional strength. The faceted MegaDrive down tube takes advantage of the new carbon fiber layup, improving overall frame strength and pedaling response. In addition, the 1-1.25"-by-1.5" tapered OverDrive2 head tube/steerer tube adds precision to the Defy Advanced Pro 0's handling, especially in fast turns and descents. A press-fit PowerCore bottom bracket also eliminates power-robbing flex at the crankset. Internal cable routing keeps the Defy Advanced Pro 0 looking clean and sleek, while an aperture in the left chainstay fits the included RideSense speed/cadence sensor without the use of clumsy zip-ties. Flat-mount disc brake installation promotes more even pad wear over time as well as better brake lever feedback. The bike's overall geometry feels stable over rough and choppy pavement without handling like a Winnebago.

Shimano's iconic Ultegra group gets a full redesign with their 11-speed Di2/hydraulic disc brake "R8070" version. The new dual-control levers have been substantially reshaped from the previous ST-R785 version, making the levers more comfortable for riders with smaller hands. The lever reach is also more adjustable than ever. Under the levers' hood peak is a flush button that can be programmed (with Shimano's E-tube software) to operate the rear derailleur. Shift buttons have a more positive detent, making operation with heavy gloves much easier. The redesigned Shadow-style Ultegra Di2 rear derailleur features a more tucked-in profile for improved aero drag and faster operation while shifting under load. The front Ultegra Di2 derailleur has a reprofiled cage that reduces the chance of interfering with a wide rear tire. As always, the front Di2 derailleur automatically trims itself as the rear derailleur moves the chain across the cassette. Cool, huh? Up to 900 miles of riding can be done on a single Di2 battery charge. The recharging aperture is located in the right handlebar end, and has a charge indicator light for ease of use. An Ultegra compact crankset comes with a 50/34T chainring combination, bringing a wide gearing range to the Defy Advanced Pro 0. An 11-34T Shimano Ultegra cassette brings up the rear.

The SLR-1 wheelset found on the Defy Advanced Pro 0 is tubeless-ready, disc-specific and built from Giant's own Composite carbon fiber. Yes, you get carbon fiber wheels straight off the sales floor with the Defy Advanced Pro 0! The lightness, aerodynamics and smooth ride quality of carbon fiber hoops are already on the bike! Wrapped with 700x32c Gavia AC 1 tubeless tires, the Defy's handling over rough and choppy pavement will redefine what a bike can do for a rider looking to cover more miles over unpleasant pavement (or lack thereof...). Ultegra hydraulic disc brakes and SM-RT800 rotors ensure excellent stopping power and brake lever feedback in all conditions, rain or shine.

Now we get to the really good part: This bike includes a power meter preinstalled in the Ultegra crankset. A Power Pro dual-sided power meter will transmit vital metrics to any popular ANT+ head unit (Garmin, Giant NeosTrack, etc.) including watts, cadence, left-to-right pedal balance, and force angle with the aid of a multi-axis accelerometer. 150 hours of operation on a single charge makes training and riding endurance events worry-free. Use a Giant RideLink smartphone app to check battery charge, assist in calibration and update firmware.

Giant brings a proven (and head-slappingly simple) technology to the Defy Advanced Pro 0: D-Fuse. The bike's D-Fuse Composite carbon fiber seatpost has a D-shaped profile, allowing the post to flex backward about 10-12mm when tackling rough pavement. A Contact SL saddle, alloy Contact SL Stealth stem with internal cable routing and carbon fiber D-Fuse road handlebar completes this century dominator.

A Shimano charging cable and Giant Power Pro charging cable is included in the purchase of this bicycle. Additional accessory stem mounts for handlebar computers from Garmin and Wahoo (sold separately) are also included

Electronic drivetrain systems deliver excellent shifting, easy set up, and solid battery life. Here are some benefits of electronic shifting that you don't want to miss.

Electronic shifting delivers exceptional performance.

Shifting Performance

Electronic shifting systems use powerful servo motors to rapidly shift the chain. Because microprocessors and sensors constantly monitor every aspect of the system, they shift with surgical precision and without chain rub.

Electronic shifting is customizable.


Many major systems have customizable shifting. Some have the ability to add remote shifters for common riding positions, and some even allow you to change the functions of the shifting buttons.

Electronic shifting is light on the maintenance.


Electronic groupsets are responsive and consistent. There are no cables to stretch and wear out, so you get a flawless shift every time. The added bonus is you'll never have to replace a derailleur cable ever again.


Frame Advanced-Grade Composite
Fork Advanced-Grade Composite, Full-Composite OverDrive 2 Steerer
Axles 12mm thru-axles
Rims/Wheels Giant SLR-1 Disc WheelSystem
Hubs Giant SLR-1 Disc WheelSystem, 12mm thru-axle, Center Lock
Spokes Giant SLR-1 Disc WheelSystem
Tires Giant Gavia AC 1, Tubeless, 700 x 28c, Folding
Crankset Shimano Ultegra with Giant Power Pro
Chainrings 50/34T
Bottom Bracket Shimano Press Fit
Chain KMC X11SL-1
Front Derailleur Shimano Ultegra Di2
Rear Derailleur Shimano Ultegra Di2
Cassette/Rear Cogs Shimano Ultegra, 11-34T
Shifters Shimano Ultegra Di2
Handlebars Contact SLR D-Fuse Composite
Stem Contact SL Stealth
Brake Levers Shimano Ultegra Di2, hydraulic
Brakes Shimano Ultegra, hydraulic
Saddle Contact SL (neutral)
Seat Post Giant D-Fuse SL Composite
Accessories & Extras RideSense Bluetooth speed/cadence sensor, stem mount for GPS handlebar computer, Shimano Di2 charging cable, Giant Power Pro charging cable

* Subject to change without notice.