Superlight ultra-efficient and rides like a dream. This well-rounded race bike blends industry-leading composite frame engineering with fully integrated components to help you climb corner and descend with astonishing speed and sublime road handling. MADE FASTER This versatile road racer combines race-winning stiffness-to-weight with aerodynamic tube shaping and system integration. From the road-smoothing Variant seatpost to the composite WheelSystem every piece is optimized as part of the system. The new OverDrive Aero steerer tube technology is combined with a Contact SL AeroLight stem and Contact SL handlebar to incorporate new internal cable routing for easy setup and adjustment while integrated disc brakes and generous clearance for tyres up to 33mm make it adaptable to all road conditions. Key Performance Factors SYSTEM OPTIMISATION The frameset wheels cockpit and other parts are engineered developed and tested together to perform as a system. The all-new OverDrive Aero steerer tube technology is combined with a Contact SL AeroLight stem and Contact SL handlebar to incorporate internal cable routing that integrates the top cap cables and spacers in a more aerodynamic user-friendly setup. WINNING EFFICIENCY Featuring a greater stiffness-to-weight ratio than the previous generation along with new aero tube shaping and a lighter overall weight this uncompromising race bike delivers explosive acceleration and unyielding pedalling stiffness. The result is race-winning performance in the moments that count. INTEGRATED AERODYNAMICS All tube shapes are engineered and developed using Computational Fluid Dynamics CFD modelling and wind-tunnel testing. From the truncated ellipse shape of frameset tubing to a new cockpit design and component integration it all adds up to a more streamlined profile that improves overall aero performance compared to the previous generation. Advanced Composite Technology Giant’s High Performance Grade raw carbon material is used to produce this custom frame material in our own composite factory with a high stiffness-to-weight ratio. The front triangle of these framesets is assembled and molded as one continuous piece in a proprietary manufacturing process called Modified Monocoque Construction. Compact Road Design Introduced by Giant with the professional Team ONCE in the 1990s Compact Road revolutionized the look and feel of high-performance road bikes forever. A downward sloping toptube from the headtube to the seattube creates smaller front and rear triangles for a lighter stiffer bike. It also makes it easier for riders of all sizes to have a perfect fit. OverDrive Aero Found inside the head tube of the Defy Propel and TCR ranges the D-shaped fork steerer tube and corresponding spacers provide an extremely aerodynamic easier to service system of internally routed brake and derailleur cables. Tubeless System Fewer flat tires. Greater traction. Less rolling resistance and a smoother faster ride. Giant’s Tubeless System makes it easier than ever to experience all these benefits. Colours Gloss Meteor Storm/White Frame Advanced-Grade Composite 12x142mm thru-axle Disc Fork Advanced SL-Grade Composite Full-Composite OverDrive Aero Steerer 12x100mm thru-axle Disc Handlebar Giant Contact SL 10.5 degree flare Grips Giant Stratus Lite 2.0 with gel Stem Giant Contact SL Aerolight Seatpost Giant Variant composite -5/+15mm offset Saddle Giant Fleet SL 7mm SST Rail With Giant ParticleFlow technology Pedals PEDALS NOT SUPPLIED Shifters Shimano 105 2×12 Front Derailleur Shimano 105 Rear Derailleur Shimano 105 Brakes Shimano 105 hydraulic disc RT70 160/140mm rotors Brake Levers Shimano 105 hydraulic disc Cassette Shimano 105 11×34 Chain KMC X12L-1 Crankset Shimano 105 36/52 with Giant Power Pro power meter Bottom Bracket Shimano PressFit 71 Rims New Giant SLR 1 40 Carbon Disc Wheel System with GIANT patented DBL Dynamic Balanced Lacing technology Hubs [F] Giant Low Friction Hub CenterLock 12mm thru-axle [R] Giant Low Friction Hub 40t ratchet driver CenterLock 12mm thru-axle Spokes Sapim CX-Ray Tyres Giant Gavia Course 0 Tubeless 700x25C28mm effective 170 TPI Folding Extras Factory tubeless set up Out front computer mount 33mm max tyre clearance 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. Every effort has been made to ensure accuracy throughout this website. However Giant reserves the right to change bike specifications features prices and colours without prior notice.
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