Giant Road Bikes Size Guide
| Size | Height Range |
| X-Small | 5'2"-5'7" |
| Small | 5'5"-5'9" |
| Medium | 5'7"-5'11" |
| Medium/Large | 5'10"-6'2" |
| Large | 6'0"-6'4" |
| X-Large | 6'2"-6'6" |
Push your power to the limit during sprints, breakaways, and solo efforts. This aerodynamic road bike is engineered to slash through the wind, giving you the edge you need. Because in racing, every tiny advantage matters.
Integrated aerodynamics
AeroSystem Shaping, a result of CFD analysis and dynamic wind-tunnel testing, optimizes aerodynamic performance at every yaw angle. The truncated ellipse airfoil tube shapes and all-new Contact SL Aero cockpit produce superior aero performance.
Easier adjustability
All-new cable routing through the stem and head tube makes it quicker and easier to adjust or change cockpit components and fine-tune performance and riding position.
Race-winning efficiency
Advanced-grade composite frame and fork deliver optimal stiffness and weight savings. The result is an even greater stiffness-to-weight advantage.
![Overdrive Aero](http://bicyclewarehouse.com/cdn/shop/files/OverdriveAero_500x.png?v=1720653476")
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.
More Info![Tubeless System](http://bicyclewarehouse.com/cdn/shop/files/tubeless_500x.png?v=1715993078")
Tubeless System
Whether you’re cornering in a crit, climbing technical singletrack or cruising through the city, you'll be free to ride without worrying about your bike's tires on your next adventure.
More Info![Advanced Forged Composite Technology](http://bicyclewarehouse.com/cdn/shop/files/ADVANCED_FORGED_COMPOSITE_TECHNOLOGY_500x.jpg?v=1717030218")
Advanced Forged Composite Technology
A state-of-the-art high-pressure molding process is used to produce complex-shaped carbon fiber components that are lighter, stiffer and stronger than similar components made from aluminum. This technology is used in critical performance parts such as Maestro Suspension rocker links.
More Info| XS | S | M | ML | L | XL | |
|---|---|---|---|---|---|---|
| A Seat Tube Length (inch) | 18.3 | 19.7 | 20.5 | 21.5 | 22.6 | 23.4 |
| B Seat Tube Angle | 74.5° | 74.0° | 73.5° | 73.0° | 73.0° | 72.5° |
| C Top Tube Length (inch) | 20.5 | 21.1 | 21.7 | 22.2 | 22.8 | 23.6 |
| D Head Tube Length (inch) | 4.7 | 5.1 | 5.7 | 6.5 | 7.3 | 7.9 |
| E Head Tube Angle | 71.0° | 72.3° | 73.0° | 73.0° | 73.0° | 73.0° |
| F Fork Rake (inch) | 1.8 | 1.8 | 1.8 | 1.8 | 1.8 | 1.8 |
| G Trail (inch) | 2.8 | 2.4 | 2.2 | 2.2 | 2.2 | 2.2 |
| H Wheelbase (inch) | 38.4 | 38.5 | 38.6 | 39 | 39.6 | 40.2 |
| I Chain Stay Length (inch) | 15.9 | 15.9 | 15.9 | 15.9 | 15.9 | 15.9 |
| J Bottom Bracket Drop (inch) | 2.8 | 2.8 | 2.8 | 2.6 | 2.6 | 2.6 |
| K Stack (inch) | 20.4 | 20.8 | 21.5 | 22.1 | 22.9 | 23.5 |
| L Reach (inch) | 14.8 | 15.1 | 15.3 | 15.5 | 15.8 | 16.2 |
| M Stand Over Height (inch) | 28.4 | 29.6 | 30.3 | 31.3 | 32.3 | 32.8 |
| N Handlebar Width (inch) | 15 | 15 | 15.7 | 15.7 | 16.5 | 16.5 |
| O Stem Length (inch) | 3.1 | 3.5 | 3.9 | 4.3 | 4.3 | 4.7 |
| P Crank Length (inch) | 6.5 | 6.5 | 6.7 | 6.7 | 6.8 | 6.8 |
At Bicycle Warehouse your satisfaction is our top priority. We understand the importance of your happiness with every purchase, which is why we proudly offer our 30 Day Love It Guarantee for your unused gear and 14 days on all bikes. Our exchange and returns process is quick and easy.
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