A race-ready carbon gravel bike with Shimano GRX RX825 Di2 2x12 gearing, Vision SC45 carbon wheels and Colnago CC01 integrated cockpit.

Colnago

Colnago G4X 2x Carbon Gravel Bike 2026 in Yellow

£4,999.00 £5,999.00 17% off

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Colnago G4X 2x Carbon Gravel Bike 2026 in Green

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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

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When you purchase this item, you will earn of rewards points to spend on your next purchase from us. You can spend your Rewards balance in-store & online.

Hassle free returns

In the unlikely event that you are not satisfied with your purchase please feel free to return your items within 90 days of the purchase date for a full exchange or refund. Any item (excluding food, underwear or e-gift vouchers) can be returned to us for any reason within 90 days, provided that the item has not been used or fitted and is returned in its original packaging with valid proof of purchase.

It is recommended that you use a recorded delivery service or return to a store to ensure your items are received by us. We cannot assume responsibility for items that are lost in transit back to us.

Returning an item

Online or in-store purchases can be returned to any of our 12 stores free of charge or can be returned by post or courier at your cost after completing the online returns form below. If you are returning an item due to a fault, we will refund your postage costs.

Bikes & Bulky items

If you wish to return a bike or bulky item to us, please keep the box it arrived in and let us know by contacting our support team via our online webchat, email or by phone (020 45063856) and we will help arrange a collection.

Non Bike - Customer Returns Form

If you wish to return or exchange an item, please fill out the form below following the steps inside. Returns can be processed quicker if all required information is provided.

Terms & Conditions

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

Click & Collect customers can buy with confidence knowing that they can review the item before deciding whether it is right for you before leaving the store. Should you decide it's not right for you, it can be conveniently exchanged or refunded straight away, or you still have up to 90 days to return it if you are still unsure.

Please note:
1. If the items we have sent you are faulty, damaged or not as we described, we will cover the cost of collection and the delivery of the correct item.

2. If we have delivered the correct bike but upon inspection, you decide the bike is not the one for you, we will charge you £50 for collection (£100 from Northern Ireland). If you do not have the original box in usable condition, we will charge you an additional £15 to provide one.

Refunds will be processed using the same method of payment used for the original purchase. Credit & debit card refunds must be made to the card used for the original purchase.

We are unable to offer a refund without a valid proof of purchase.

Colnago G4X 2x Carbon Gravel Bike 2026 in Yellow

Season:2026Sale

Brand:Colnago

Code:COL.CB.25.G4X.2XMYTL

The Colnago G4X 2x is a high-performance carbon gravel bike designed to combine speed, control and versatility across fast gravel, mixed surfaces and demanding off-road routes. Its carbon frameset is paired with a premium Shimano GRX RX825 Di2 2x12 drivetrain for precise electronic shifting and a broad spread of gears.

Shimano's GRX RX825 Di2 groupset combines electronic front and rear derailleurs with a 48/31T double chainset and 11-36T cassette. This 2x12 setup provides closely spaced ratios for maintaining an efficient cadence at speed while retaining the range needed for steeper gravel climbs.

Vision SC45 wheels add a performance-focused carbon wheelset with a 45mm profile and 23mm internal width, paired with 40mm Pirelli Cinturato tyres for grip and confidence across mixed surfaces. Shimano GRX hydraulic disc brakes provide dependable stopping performance.

Up front, Colnago's CC01 integrated carbon handlebar and stem creates a clean, aerodynamic cockpit, complemented by a Colnago carbon seatpost and Selle Italia Model X saddle. The result is a premium gravel build designed for riders who want speed and performance without sacrificing off-road capability.

Key Features & Benefits:

Shimano GRX RX825 Di2 2x12: Electronic shifting combines a 48/31T double chainset with an 11-36T cassette, delivering precise gear changes and a versatile range.
Vision SC45 Wheels: Performance-focused wheels with a 45mm profile and 23mm internal width provide a fast platform for gravel and mixed-surface riding.
Colnago Integrated Cockpit: The CC01 integrated handlebar and stem creates a clean, streamlined cockpit to complement the G4X carbon frameset.

Full Specification:

Frame: Colnago G4X Carbon
Fork: Colnago G4-X
Number of Gears: 24 (2x12)
Gear Shifters: Shimano GRX RX825 Di2
Chainset: Shimano GRX FC-RX825-2
Chainrings: 48/31T
Rear Cassette: Shimano, 11-36T
Chain: Shimano CN-M8100
Front Derailleur: Shimano GRX RX825 Di2
Rear Derailleur: Shimano GRX RX825 Di2
Bottom Bracket: T47
Pedals: Not Supplied – Shop Pedals Here
Wheelset: Vision SC45, 23mm Internal Width, 12mm Thru Axle
Tyres: Pirelli Cinturato, 700x40C
Brakes: Shimano GRX BR-RX825 Hydraulic Disc
Rotors: Shimano RT-M800
Handlebar: Colnago CC01 Integrated
Stem: Colnago CC01 Integrated
Seatpost: Colnago Carbon
Saddle: Selle Italia Model X BB FEC
Headset Bearings: ACROS Stainless Steel, 42x52x7mm / 40x52x7mm
Thru Axles: Colnago Thru-Axles, 12x123mm Front / UDH Ø12x170.5mm Rear

Manufacturers reserve the right to change specifications without notice based on availability at the point of assembly.

Size Guide for Colnago G4-X Gravel Bikes

Rider height	Rider inseam	Saddle height*	Size
155 cm	68 cm	60.5 cm	45
158 cm	70 cm	62 cm	45
161 cm	72 cm	64 cm	45
164 cm	73 cm	65 cm	45
167 cm	75 cm	66.5 cm	45
170 cm	77 cm	68.5 cm	48
172 cm	79 cm	70.5 cm	48
174 cm	81 cm	72 cm	48
176 cm	83 cm	73.5 cm	52
178 cm	85 cm	75.5 cm	52
180 cm	86 cm	76.5 cm	52
182 cm	87 cm	77 cm	52
184 cm	88 cm	78 cm	54
186 cm	89 cm	79 cm	54
188 cm	90 cm	80 cm	54
190 cm	91 cm	80.5 cm	54
192 cm	92 cm	81.5 cm	57
194 cm	93 cm	82.5 cm	57
196 cm	94 cm	83.5 cm	57

Size Chart for Colnago G4-X Gravel Bikes

Size	45	48	52	54	57
Cf	450	480	520	540	570
Fork	406	406	406	406	406
Sc°	74	74	73.5	73	73
A	585	596	613	628	644
C	430	430	430	430	430
Ss°	71	71.5	71.5	71.5	71.5
bbdrop	72	72	70	70	70
Stack	535	554	573	591	610
Reach	371	380	390	400	410

Colnago CC.01 wide handlebars
Handlebar

CC.01 Wide integrated cockpit

Sizes 450

Width: 400 mm

Sizes 480 -540

Width: 420 mm

Sizes 570

Width: 440 mm

Stem

Integrated cockpit (CC.01 Wide)

Size 450 - 480

Length: 90 mm

Sizes 520- 570

Length: 100 mm

Warranty Information for Colnago:

Colnago Ernesto E C Srl guarantees its frames, if purchased from authorised Colnago dealers, free of production defects or materials for:

Three years from the date of purchase at retail if, within ten days of the purchase, it is registered on the site www.colnago.com.

Two years if it does not register within ten days of purchase or for warranty replacement products.

Two years for the E64 model from the retail purchase date.

A frame that is recognised as defective by Colnago Ernesto E C Srl in the terms of this warranty will be repaired or replaced, at the discretion of Colnago. In case of NON availability of the original product, the replacement will take place with a similar product of equivalent value. We remind you that the Colnago warranty covers any aesthetic and/or painting defects for 12 months (1 year).

Products of other companies, mounted on Colnago bicycles, are covered by the guarantees of the respective manufacturers, to which you are kindly requested.

Click here to find out more and to read the full warranty terms and conditions.

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Colnago G4X 2x Carbon Gravel Bike 2026 in Yellow

Colnago G4X 2x Carbon Gravel Bike 2026 in Yellow

Key Features & Benefits:

Full Specification:

Size Guide for Colnago G4-X Gravel Bikes

Size Chart for Colnago G4-X Gravel Bikes

Warranty Information for Colnago:

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