To improve your shopping experience today and in the future, this site uses cookies.
I Accept Cookies

Shop the Giant Defy Advanced Pro 0 men’s endurance road bike. Lightweight carbon frame, D-Fuse comfort, tubeless carbon wheels and integrated power meter for long, fast, fatigue-free rides.

Shop the Giant Defy Advanced Pro 0 men’s endurance road bike. Lightweight carbon frame, D-Fuse comfort, tubeless carbon wheels and integrated power meter for long, fast, fatigue-free rides.

Giant

2026 Giant Defy Advanced Pro 0 Mens Road Bike - Mariana Blue

£5,499.00
Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined

2026 Giant Defy Advanced Pro 0 Mens Road Bike - Mariana Blue

Season:2026

Brand:Giant

Code:9031025MARIANABLU

Built for epic days in the saddle, the Giant Defy Advanced Pro 0 is a premium endurance road bike engineered to help you ride further, climb higher, and stay fresher for longer. Combining ultra-lightweight carbon construction with advanced compliance technologies, this bike delivers exceptional comfort, efficiency, and confident control on long-distance road rides, rough asphalt, and challenging terrain.

  • Advanced-grade composite endurance road frame and fork
  • Lightweight, stiff, and compliant carbon construction
  • D-Fuse seatpost and handlebar for vibration absorption
  • Hookless carbon wheels optimised for tubeless tyres up to 38mm
  • Stable 40mm rim depth for confident handling in crosswinds
  • OverDrive Aero steerer with internal cable routing
  • Integrated Power Pro power meter system
  • Ideal for long-distance road riding, endurance events, and sportive racing

At the heart of the Defy Advanced Pro 0 is Giant’s Advanced-grade composite frame and fork, constructed using Modified Monocoque Technology for an outstanding stiffness-to-weight ratio. The result is a responsive yet forgiving endurance road frame that smooths out road vibrations and reduces rider fatigue without compromising performance.

Giant’s innovative D-Fuse Technology works as a complete system, with the D-shaped seatpost and Contact D-Fuse handlebar flexing under load to absorb shocks and vibrations. This engineered compliance allows you to maintain speed and comfort over long rides, rough roads, and all-day adventures.

For confident handling in all conditions, the Defy Advanced Pro 0 features hookless carbon wheels with a 22.4mm internal width and 40mm rim depth, optimised for high-volume tubeless tyres up to 38mm. This setup delivers enhanced traction, lower rolling resistance, and stable handling, even in crosswinds.

The OverDrive Aero steerer system integrates internally routed cables for improved aerodynamics, clean aesthetics, and easier servicing. Completing the package, the integrated Power Pro system provides accurate, reliable power data to support structured training and performance gains.

Whether you’re tackling endurance sportives, long alpine climbs, or fast-paced training rides, the Giant Defy Advanced Pro 0 is a high-performance endurance road bike designed to help you go further, faster, and more comfortably.

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
  • Sizes
    XS, S, M, M/L, L, XL
  • Colours
    Abyss Black/Chrome, Spruce
  • Frame
    Advanced-grade Composite, 12x142mm thru-axle, disc
  • Fork
    Advanced-grade Composite, full-composite OverDrive steerer, 12x100mm thru-axle, disc
  • Handlebar
    Giant Contact SL 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 AeroLight XS:80mm, S:90mm, M:100mm, M/L:100mm, L:110mm, XL:110mm
  • Seatpost
    Giant D-Fuse, composite, 14mm offset
  • Saddle
    Giant Approach
  • Shifters
    Shimano 105
  • Front derailleur
    Shimano 105
  • Rear derailleur
    Shimano 105
  • Brakes
    Shimano 105 hydraulic, Shimano SM-RT64 rotors [F]160mm, [R]160mm
  • Brake levers
    Shimano 105
  • Cassette
    Shimano 105, 11x36
  • Chain
    KMC X12L-1
  • Crankset
    Shimano 105, 34/50 XS:165mm, S:165mm, M:170mm, M/L:170mm, L:172.5mm, XL:172.5mm
  • Bottom bracket
    Shimano, press fit
  • Rims
    Giant P-R1 Disc wheelset, alloy, [F]25mm, [R]25mm
  • Hubs
    Giant alloy, 12mm thru-axle
  • Spokes
    Sapim
  • Tyres
    Giant Gavia Fondo 1, tubeless, 700x32c (33.5mm), folding
  • Extras
    tubeless prepared, 40mm max tire size
  • Max tyre clearance
    40mm
As with any product, specification is subject to change without prior notification. You are advised to confirm current specification before buying. Please note that this bike does not come with pedals.
Sizing Information

SIZING

Size in ft5'2" - 5'5"5'5" - 5'9"5'8" - 5'11"5'10" - 6'1"6'0" - 6'4"6'3" - 6'6"
Size in cm160 - 168cm164 - 174cm172 - 180cm178- 186cm184 - 192cm190 - 198cm
Bike SizeXSSMMLLXL

GEOMETRY

SizeSMMLLXL
Seat Tube Length445mm480mm515mm535mm565mm
Seat Tube Angle74°73.5°73°73°73°
Top Tube Length530mm545mm560mm575mm595mm
Head Tube Length135mm150mm175mm195mm215mm
Head Tube Angle71.8°72.5°72.5°72.5°72.5°
Fork Rake50mm50mm50mm50mm50mm
Trail63.4mm58.6mm58.6mm58.6mm58.6mm
Wheelbase994mm998mm1010mm1025mm1040mm
Chainstay Length420mm420mm420mm420mm420mm
Bottom Bracket75mm75mm70mm70mm70mm
Stack541mm558mm577mm596mm615mm
Reach375mm380mm384mm393mm402mm
Stand Over Height733mm762mm796mm814mm841mm
Handlebar Width404mm424mm424mm444mm444mm
Stem Length90mm100mm100mm110mm110mm
Crank Length165mm170mm170mm172.5mm172.5mm
Wheel Size700c700c700c700c700c
Professional Opinion
Home Road Cycling Bikes Giant Road Bikes