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Giant

2026 Giant Defy Advanced Pro 0 Men's Road Bike in Mariana Blue

£5,499.00
Size Guide
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

Hassle free returns

Any item (apart from nutrition products) can be returned to us within 28 days of purchase, given the item has not been used or fitted, and is returned in its original packaging with valid proof of purchase.

Online purchases can be returned either in store at Giant Lincoln or returned to us via post.



Giant Lincoln Returns address:

Returns
Giant Store Lincoln
Doddington Hall
Doddington
LN6 4RU

Giant Tugby Returns Address:

Returns
Giant Tugby
Wood Lane
Tugby
LE7 9WE

Customer Returns Form


If you wish to cancel, return or exchange an order please print and complete the returns form below. Place the form inside your return package along with your receipt.




Return Terms & Conditions

Items must be returned in their original packaging and be unused. Refunds will be issued once the products have been received and inspected.

Click & Collect customers: should you decide your item is not right for you, it can be exchanged or refunded straight away in store, or you still have up to 28 days to return it if you take the item away.

If the items we have sent you are faulty, damaged or not as we described, we will cover any associated re-delivery/return postage costs.

Refunds will be processed using the same method of payment used for the original purchase.

We are unable to offer a refund without a valid receipt.

Please see the Terms & Conditions page for full guidance.

Bike Returns – Change of Mind

If you decide you no longer want your bike after delivery, that’s okay — we understand that sometimes things just don’t feel quite right.
However, if the bike is not faulty and has simply been unwanted or ordered in error, you’ll be responsible for returning it to us in unused, original condition (including all packaging, manuals, and accessories).

We can help arrange a collection if needed, but please note that a return charge of £80 will apply to cover the cost of collection and handling. This amount will be deducted from your refund.

Refunds will only be processed once the bike has been received back and inspected. If the bike shows any signs of use or damage beyond what’s necessary to check it over, we may reduce the refund to reflect any loss in value.

This policy does not affect your statutory rights if your bike is faulty or not as described — in those cases, we’ll arrange collection or replacement at no cost to you.

2026 Giant Defy Advanced Pro 0 Men's Road Bike in Mariana Blue

Season:2026

Brand:Giant

Code:9031025MARIANABLU

2026 Giant Defy Advanced Pro 0 – Endurance Riding, Perfected

The 2026 Giant Defy Advanced Pro 0 is designed for long climbs, epic sportives, and all-day endurance rides, delivering a smooth, lightweight, and efficient ride that lets you push farther and ride longer.

Functional Simplicity
The frameset is one of the lightest in its category, offering a perfect mix of high-performance responsiveness and all-day comfort. Its clean, minimal design provides a “less is more” riding experience, free of unnecessary complexity.

Engineered Compliance
The Advanced-grade composite frame and fork are optimized for endurance road riding, providing a buttery-smooth ride that reduces fatigue. D-Fuse components further absorb shocks and vibrations for unmatched comfort on long distances.

Total Control
The Contact D-Fuse handlebar features ergonomic shaping with an 8-degree flare for precise handling and comfort. Wide hookless carbon rims (22.4mm inner width, 40mm depth) are designed for high-volume tubeless tires (up to 38mm), offering stable, predictable performance even in crosswinds.

Key Features:

  • Lightweight Advanced-grade composite frame and fork

  • D-Fuse handlebar and seatpost for smooth vibration absorption

  • Hookless carbon rims optimized for high-volume tubeless tires

  • Engineered for sportives, gran fondos, and endurance rides

Ride farther and smoother with the 2026 Giant Defy Advanced Pro 0, the ultimate endurance road companion.

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
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
SizeHeight
XS157 - 169cm
S165 - 175cm
M171 - 181cm
ML177 - 187cm
L183 - 193cm
XL189 - 199cm




XSSMMLLXL
ASeat Tube Length(MM)410445480515535565
BSeat Tube Angle74.5°74.0°73.5°73.0°73.0°73.0°
CTop Tube Length(MM)515530545560575595
DHead Tube Length(MM)125135150175195215
EHead Tube Angle70.5°71.8°72.5°72.5°72.5°72.5°
FFork Rake(MM)505050505050
GTrail(MM)71.663.458.658.658.658.6
HWheelbase(MM)995994998101010251040
IChain Stay Length(MM)420420420420420420
JBottom Bracket Drop(MM)757575707070
KStack(MM)527541558577596615
LReach(MM)369375380384393402
MStand Over Height(MM)705733762796814841
NHandlebar Width(MM)404404424424444444
OStem Length(MM)8090100100110110
PCrank Length(MM)165165170170172172
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