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This buttery smooth endurance road bike helps you do more of what you love, allowing you to climb higher mountains and skip the shortcuts.
This buttery smooth endurance road bike helps you do more of what you love, allowing you to climb higher mountains and skip the shortcuts.
Giant

Giant Defy Advanced Pro 0 Road Bike in Mariana Blue

£5,499.00
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Giant Defy Advanced Pro 0 Road Bike in Mariana Blue

Season:2026

Brand:Giant

Code:9031025MARIANABLU

Here’s to long rides. Climb higher mountains, skip the shortcuts. This buttery smooth endurance road bike helps you do more of what you love.

Features:

  • Functional simplicity - Free of cumbersome gimmickry, the frameset is one of the lightest in its category. With a perfect balance of high-performance reactivity and all-day comfort, it offers a “less is more” experience for modern endurance road riding.
  • Engineered compliance - Advanced-grade composite frame and fork are specifically engineered for endurance road riding, delivering a smooth and efficient ride quality that minimizes fatigue on long rides. The new D-Fuse components work together to further absorb road shocks and vibrations.
  • Total control - New Contact D-Fuse handlebar features ergonomic shaping and an 8-degree flare for comfort and control on all-day rides. Wide, hookless carbon rims (22.4mm inner width) are optimized for high-volume tubeless tires (up to 38mm), and a 40mm rim depth offers stable, predictable handling in crosswinds.
Technical Information
  • Sizes
    XS, S, M, M/L, L, XL
  • Colours
    Mariana Blue
  • 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 SLR D-Fuse XS:404/380mm, S:404/380mm, M:424/400mm, M/L:424/400mm, L:444/420mm, XL:444/420mm
  • Grips
    Stratus Lite 3.0
  • Stem
    Giant Contact SL AeroLight XS:80mm, S:90mm, M:100mm, M/L:100mm, L:110mm, XL:110mm
  • Seatpost
    Giant D-Fuse SLR, composite, -5/+15mm offset
  • Saddle
    Giant Fleet SL
  • Shifters
    Shimano Ultegra Di2 ST-R8170
  • Front derailleur
    Shimano Ultegra Di2 FD-R8150
  • Rear derailleur
    Shimano Ultegra Di2 RD-R8150
  • Brakes
    Shimano Ultegra Di2 hydraulic, Shimano RT-CL800 rotors [F]160mm, [R]160mm
  • Brake levers
    Shimano Ultegra Di2
  • Cassette
    Shimano Ultegra, 12-speed, 11x34
  • Chain
    Shimano Ultegra
  • Crankset
    Shimano Ultegra, 34/50 with Giant Power Pro power meter XS:165mm, S:165mm, M:170mm, M/L:170mm, L:172.5mm, XL:172.5mm
  • Bottom bracket
    Shimano, press fit
  • Rims
    Giant SLR 0 40 Carbon Disc WheelSystem
  • Hubs
    [F] Giant Low Friction Hub, CenterLock, 12mm thru-axle [R] Giant Low Friction Hub, 40T ratchet driver, CenterLock, 12mm thru-axle
  • Spokes
    Aero Carbon
  • Tyres
    CADEX Classics, tubeless, 700x32c (33.5mm), folding
  • Extras
    computer mount, fender mount, water bottle cages, tubeless prepared, 40mm max tire size
  • Max tyre clearance
    40mm
Sizing Information
Giant Defy Geometry 2026

SMMLLXL
ASeat Tube Length(mm)445480515535565
BSeat Tube Angle74.0°73.5°73.0°73.0°73.0°
CTop Tube Length(mm)530545560575595
DHead Tube Length(mm)135150175195215
EHead Tube Angle71.8°72.5°72.5°72.5°72.5°
FFork Rake(mm)5050505050
GTrail(mm)63.458.658.658.658.6
HWheelbase(mm)994998101010251040
IChain Stay Length(mm)420420420420420
JBottom Bracket Drop(mm)7575707070
KStack(mm)541558577596615
LReach(mm)375380384393402
MStand Over Height(mm)733762796814841
NHandlebar Width(mm)404424424444444
OStem Length(mm)90100100110110
PCrank Length(mm)165170170172.5172.5
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