Frameset
Frame
Advanced-grade composite, 12x145mm thru-axle
Fork
Advanced SL-Grade Composite fork, Full-Composite OverDrive Aero steerer, 12x100mm thru-axle, disc
Defy Advanced E+ Elite AR (2026)
The 2025-on Giant Defy Advanced E+ Elite AR is an electric endurance-road bike built to preserve the look, fit, and road manners of the standard Defy while adding relatively discreet assistance. Rather than using a mid-drive system, Giant centered this platform around its SyncDrive Move Plus rear-hub motor and a slim, fully integrated 400Wh EnergyPak battery. That choice shapes the bike’s identity: it is intended to deliver support that feels smooth and understated, with low coasting drag and less of the bulky visual footprint that often separates e-road bikes from conventional drop-bar machines.
Within Giant’s range, this model sits at the lighter, more road-focused end of electric drop-bar bikes, but the AR version broadens its remit beyond pure pavement. Clearance for up to 38mm tires, combined with Giant’s D-Fuse compliance features at the seatpost and handlebar, positions it for long mixed-surface rides, rough pavement, and light gravel rather than aggressive off-road use. The top-tube RideControl Go interface, Smart Assist functionality, and optional 200Wh range extender reinforce that practical endurance brief. The result is a modern e-road platform aimed at riders who want help on longer, hillier rides without giving up the fit, handling, and overall presentation of a contemporary endurance bike.
Price TBD
Build
Size
Inventory
| Stack | 576mm |
| Reach | 384mm |
| Top tube | 560mm |
| Headtube length | 167mm |
| Standover height | 779mm |
| Seat tube length | 515mm |
Fit and geometry
The geometry follows current endurance-road conventions, with a relatively tall front end and moderate reach numbers that should suit long-distance comfort more than aggressive race positioning. In size M, the bike pairs a 560mm stack with a 379mm reach; size ML moves to 576mm stack and 384mm reach; and size L reaches 595mm stack with 393mm reach. Those figures indicate an upright, less stretched riding position than a race bike, which fits the Defy name and the bike’s intended role as a high-mileage assisted road machine.
Handling numbers are also conservative and stable. Head tube angles of 71.5 degrees in S and 72.5 degrees in M through L are paired with 420mm chainstays across the range and wheelbases from 994mm to 1023mm. That combination points to predictable steering and solid straight-line composure, especially with larger-volume tires. The 75-80mm bottom-bracket drop keeps the rider planted in the bike rather than perched above it, which should add confidence on rough roads and light gravel. Overall, the geometry suggests a bike designed to feel calm, balanced, and comfortable under assist rather than especially sharp or race-oriented.
Full specs
Groupset
Shift levers
SRAM Rival AXS
Rear derailleur
SRAM Rival XPLR AXS
Cassette
SRAM XPLR XG-1251 12-speed 10-44T
Chain
SRAM Rival 12-speed
Crankset
Praxis E crank alloy ISIS with SRAM X-SYNC 46T BCD107 chainring
Bottom bracket
Giant E+ System BBSS
Front brake
SRAM Rival AXS HRD hydraulic disc
Rear brake
SRAM Rival AXS HRD hydraulic disc
Front rotor
SRAM Paceline 160mm 6-bolt
Rear rotor
SRAM Paceline 160mm 6-bolt
Wheelset
Front wheel
Giant P-R2 Alloy Disc Wheel System, tubeless ready, 22mm inner width, 12x100mm thru-axle
Rear wheel
Giant P-R2 Alloy Disc Wheel System, tubeless ready, 22mm inner width, 12x145mm thru-axle
Front tire
Schwalbe G-One Allround Performance, RaceGuard, brown side-wall, tubeless, 700x35
Rear tire
Schwalbe G-One Allround Performance, RaceGuard, brown side-wall, tubeless, 700x35
Cockpit
Stem
Giant Contact SL Aerolight 31.8 alloy
Handlebars
Giant Contact SL D-Fuse 31.8 alloy
Saddle
Giant Approach
Seatpost
Giant D-Fuse composite, 14mm offset
Builds
(2026)
Price TBD
Selected