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Giant Defy Advanced 1 men’s endurance road bike with advanced carbon frame, D-Fuse comfort technology, tubeless wheels, and all-day ride efficiency. Perfect for long road rides and endurance cycling.

Giant Defy Advanced 1 men’s endurance road bike with advanced carbon frame, D-Fuse comfort technology, tubeless wheels, and all-day ride efficiency. Perfect for long road rides and endurance cycling.

Giant

2026 Giant Defy Advanced 1 Mens Road Bike - Thundercloud/Chrome

£2,799.00
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 1 Mens Road Bike - Thundercloud/Chrome

Season:2026

Brand:Giant

Code:9031022Thundercloud

The Giant Defy Advanced 1 is a lightweight endurance road bike engineered for riders who demand all-day comfort, smooth compliance, and efficient performance on long road rides. Designed to excel on rough asphalt, broken tarmac, and cobbled roads, the Defy Advanced 1 blends advanced carbon engineering with endurance-focused geometry to help you ride stronger and longer with less fatigue.

  • Advanced-Grade Composite endurance road frame and fork
  • Lightweight endurance road bike for long-distance riding
  • D-Fuse seatpost and Contact D-Fuse handlebar for vibration damping
  • Tubeless-ready wheel system for comfort, grip, and reliability
  • Compact Road Design for optimal fit and efficient power transfer
  • Smooth, stable handling from asphalt to cobbles

At the heart of the bike is Giant’s Advanced-Grade Composite frame and fork, built using Advanced Composite Technology and Modified Monocoque Construction. This delivers an outstanding stiffness-to-weight ratio while maintaining exceptional vertical compliance for endurance road cycling. The result is a smooth, responsive ride that absorbs vibrations without sacrificing speed or control.

Giant’s proven D-Fuse Technology plays a crucial role in comfort. The D-Fuse seatpost and ergonomically shaped Contact D-Fuse handlebar work together to damp road buzz, reduce fatigue, and improve control on long-distance rides. An 8-degree flare in the bars enhances stability and confidence, especially on descents and rough surfaces.

Built around Giant’s iconic Compact Road Design, the Defy Advanced 1 features a sloping top tube that reduces frame weight, increases stiffness, and makes it easier for riders of all sizes to achieve a perfect fit. Wide alloy rims paired with tubeless-ready wheels support high-volume tyres up to 38mm, delivering fewer punctures, better traction, lower rolling resistance, and a smoother, faster ride across mixed road surfaces.

Whether you’re training for endurance events, tackling long weekend rides, or seeking a fast yet comfortable carbon road bike, the Giant Defy Advanced 1 is purpose-built to redefine what an endurance road bike can be.

Technical Information
  • Sizes
    XS, S, M, M/L, L, XL
  • Colours
    Thundercloud/Chrome, Cyber Lime
  • 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
  • Pedals
    platform pedal [GCS,GTS], N/A [all other GSC]
  • Shifters
    Shimano 105 Di2
  • Front Derailleur
    Shimano 105 Di2
  • Rear Derailleur
    Shimano 105 Di2
  • Brakes
    Shimano 105 Di2 hydraulic, Shimano SM-RT64 rotors [F]160mm, [R]160mm
  • Brake Levers
    Shimano 105 Di2
  • Cassette
    Shimano 105, 12-speed, 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 0, 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

SizeXSSMMLLXL
Seat Tube Length410mm445mm480mm515mm535mm565mm
Seat Tube Angle74.5°74°73.5°73°73°73°
Top Tube Length515mm530mm545mm560mm575mm595mm
Head Tube Length125mm135mm150mm175mm195mm215mm
Head Tube Angle70.5°71.8°72.5°72.5°72.5°72.5°
Fork Rake50mm50mm50mm50mm50mm50mm
Trail71.6mm63.4mm58.6mm58.6mm58.6mm58.6mm
Wheelbase995mm994mm998mm1010mm1025mm1040mm
Chainstay Length420mm420mm420mm420mm420mm420mm
Bottom Bracket75mm75mm75mm70mm70mm70mm
Stack527mm541mm558mm577mm596mm615mm
Reach369mm375mm380mm384mm393mm402mm
Stand Over Height705mm733mm762mm796mm814mm841mm
Handlebar Width410mm410mm430mm430mm450mm450mm
Stem Length80mm90mm100mm100mm110mm110mm
Crank Length165mm165mm170mm170mm172mm172mm
Wheel Size700c700c700c700c700c700c
Professional Opinion
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