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" |
With its smooth-riding composite frame, lightweight battery, new SyncDrive Move Plus integrated rear hub motor and all-road ready 38mm tires, the Defy Advanced E+ AR is the ideal choice for performance-minded road riders who want to tackle steep hills, maintain higher speeds, and experience road riding with no limitations.
SEAMLESS POWER
The SyncDrive Move Plus motor is integrated into the rear hub and delivers 30Nm of power (equivalent to 75Nm with a mid-drive motor) directly to the rear wheel. Weighing just 1.7kg, it’s specially tuned for the pedaling pattern of performance road riding, with minimal energy loss and more torque at higher speeds. The result is a natural feel when accelerating or maintaining steady power at speed, and no motor drag while freewheeling or coasting.
SYSTEM INTEGRATION
The down tube integrated EnergyPak 400 battery system weighs just 2.3kg and is purpose-built for the specific needs of E-bikes. A top tube mounted RideControl Go button makes it quick and easy to turn the E-bike on or off and change power modes. Smart Assist technology uses three sensors to precisely measure the power being applied to the pedals and produce just the right amount of support for a smooth, natural ride experience. All models feature SRAM wireless electronic shifters and an integrated taillight.
PURE ROAD PERFORMANCE
A lightweight composite frameset and high-performance components including a D-Fuse seatpost and handlebars for compliance, integrated WheelSystems with all-road ready 35mm tubeless tires, and a wireless electronic drivetrain all add up to a smooth, efficient ride quality that mirrors the award-winning performance of the Defy endurance road bike range.
![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![D-Fuse](http://bicyclewarehouse.com/cdn/shop/files/dfuse_500x.png?v=1721344622")
D-Fuse
The proprietary “D” shaped composite seatpost damps vibration, resulting in a smooth, compliant ride.
More Info![EnergyPak](http://bicyclewarehouse.com/cdn/shop/files/energypak_500x.png?v=1722887847")
EnergyPak
This range extender can boost total capacity by 250Wh. It has all the latest technologies combined with an up-to-date design that fits a select number of bikes. It has smart technology so it automatically turns on when your battery loses power, giving you peace of mind that you can reach your destination.
More Info![SyncDrive](http://bicyclewarehouse.com/cdn/shop/files/synchdrive_500x.png?v=1722889571")
SyncDrive
SyncDrive Technology provides pedaling assistance that’s synchronized with human input. It produces smooth pedaling power with a natural feel that is sonically tuned for quiet performance. The result is very predictable and responsive motor behavior that produces the same output pattern between the rider and the motor. Unlike cadence-driven systems, there is no need to adjust your riding style to match the motor behavior. You can ride like you normally do, but with more power.
More Info| S | M | ML | L | |
|---|---|---|---|---|
| A Seat Tube Length (inch) | 17.5 | 18.9 | 20.3 | 21.1 |
| B Seat Tube Angle | 74.0° | 73.5° | 73.0° | 73.0° |
| C Top Tube Length (inch) | 20.9 | 21.5 | 22 | 22.6 |
| D Head Tube Length (inch) | 5.1 | 5.7 | 6.6 | 7.4 |
| E Head Tube Angle | 71.5° | 72.5° | 72.5° | 72.5° |
| F Fork Rake (inch) | 2 | 2 | 2 | 2 |
| H Wheelbase (inch) | 39.1 | 39.2 | 39.7 | 40.3 |
| I Chain Stay Length (inch) | 16.5 | 16.5 | 16.5 | 16.5 |
| J Bottom Bracket Drop (inch) | 3.1 | 3.1 | 3 | 3 |
| K Stack (inch) | 21.3 | 22 | 22.7 | 23.4 |
| L Reach (inch) | 14.7 | 14.9 | 15.1 | 15.5 |
| M Stand Over Height (inch) | 28.2 | 29.4 | 30.7 | 31.5 |
| N Handlebar Width (inch) | 15.7 | 16.5 | 16.5 | 17.3 |
| O Stem Length (inch) | 3.5 | 3.9 | 4.3 | 4.3 |
| Q Wheel Size | 700C | 700C | 700C | 700C |
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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