Summary
The Colnago Colnago G4-X Shimano GRX Di2 825 2x , a Road bike released in 2025 , priced at £4399 . It features a frame made of Carbon Fiber and a fork constructed from Carbon Fiber . The bike is equipped with a Shimano GRX 2x: Shimano FD-RX820, Shimano GRX 2x: Shimano FD-RX820 groupset (Electric Shifting: Yes ). It uses Disc Brake braking for confident stopping power. Rolling on a Vision SC 45 Disc wheelset, it features a Shimano T47-86mm, Shimano T47-86mm bottom bracket for drivetrain efficiency. It uses Internally Routed cable routing for a cleaner look and improved aerodynamics. It supports tires up to 45 mm , offering flexibility for comfort or off-road use. This bike is UCI compliant , meaning it can be used in officially sanctioned races. It comes with a limited 3-year warranty . Curious how it stacks up against similar bikes? Compare below...
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3T STRADA 105 Di2 2X12
3T STRADA 105 Di2 2×12 CARBO
3T STRADA FORCE AXS 2×12
3T STRADA FORCE D1 AXS 2X12
3T STRADA RED AXS 1X12
3T STRADA RED AXS 1X12/CLASSIFIED R50
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B’TWIN KIDS ROAD BIKE TRIBAN 500 9-12 YEARS OLD
B’TWIN Kids’ 26-Inch Road Bike Ages 9-12 Triban 100
B’TWIN Ultra 720 CF Road Bike
B’TWIN Ultra 740 CF Team Edition Road Bike
B’TWIN Ultra RCR CF Dura-Ace Di2
Bianchi Infinito 105
Bianchi Infinito 105 Di2
Bianchi Infinito CV 105 Di2
Bianchi Infinito CV Ultegra Di2
Bianchi Infinito ULTEGRA DI2
Bianchi Infinito XE 105
Bianchi Infinito XE 105 Di2
Bianchi Infinito XE Rival eTap AXS
Cannondale CAAD13 105 Di2
Cannondale CAAD13 Disc 105
Cannondale CAAD13 Disc Rival AXS
Cannondale CAAD13 Women’s Disc 105
Cannondale SuperSix EVO Hi-MOD 2
Cannondale SuperSix EVO LAB71
Cannondale SystemSix Carbon Ultegra
Cannondale SystemSix Hi-MOD Dura-Ace Di2
Cannondale SystemSix Hi-MOD Dura-Ace Di2
Cannondale SystemSix Hi-MOD Red eTap AXS
Cannondale SystemSix Hi-MOD Ultegra Di2
Cannondale SystemSix Hi-MOD Ultegra Di2
Canyon Aeroad CF SLX 7 AXS
Canyon Aeroad CF SLX 7 Di2
Canyon Aeroad CF SLX 7 Di2 C46
Canyon Aeroad CF SLX 8 AXS
Canyon Aeroad CF SLX 8 Di2
Canyon Aeroad CF SLX 8 Di2 Speed
Canyon Aeroad CFR AXS
Canyon Aeroad CFR Di2
Canyon Aeroad CFR Tensor
Canyon Endurace 6
Canyon Endurace 7
Canyon Endurace 7 RB
Canyon Endurace CF 7
Canyon Endurace CF 7
Canyon Endurace CF 7 AXS
Canyon Endurace CF 7 Di2
Canyon Endurace CF SLX 7 AXS
Canyon Endurace CF SLX 7 Di2 AR46
Canyon Endurace CFR Flash
Canyon Grail CF SLX 8 ATR
Canyon Grail CF SLX 8 Di2 GRC42
Canyon Grail CF SLX 9 AXS
Canyon Grail CFR XPLR
Canyon Grizl 5
Canyon Grizl CF SL 8 AXS
Canyon Grizl CF SL 8 Eagle
Canyon Grizl CF SLX 8 Di2 GRC
Canyon Inflite CF SL 5
Canyon Inflite CF SL 6
Canyon Inflite CF SLX 7
Canyon Inflite CF SLX 8
Canyon Inflite CFR
Canyon Ultimate CF SLX 8 AXS
Canyon Ultimate CF SLX 8 Di2
Canyon Ultimate CF SLX 8 Di2 C50
Canyon Ultimate CF SLX 8 Di2 Speed
Canyon Ultimate CF SLX 8 Force AXS
Carrera Crixus Mens Adventure Bike
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Carrera Virtuoso Womens Road Bike
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Cervelo Caledonia-5 Force AXS
Cervelo Caledonia-5 Rival AXS
Cervelo Caledonia-5 Ultegra Di2
Cervelo R5 Force eTap AXS
Cervelo R5 Red eTap AXS
Cervelo R5 Ultegra Di2
Cervelo R5Dura Ace Di2
Cervelo S5 Dura-Ace Di2
Cervelo S5 Force AXS
Cervelo S5 Red AXS
Cervelo S5 Red XPLR AXS 1
Cervelo S5 Ultegra Di2
Cervelo Soloist Force AXS
Cervelo Soloist Force AXS 1
Cervelo Soloist Rival AXS
Cervelo Soloist Ultegra Di2
Colnago G4-X Shimano GRX 820 2x
Colnago G4-X Shimano GRX 822 1x
Colnago G4-X Shimano GRX Di2 825 2x
Colnago G4-X Sram Force AXS
Colnago G4-X Sram Red AXS
Colnago G4-X Sram Rival AXS
CUBE AGREE C:62, ONE
CUBE AGREE C:62, PRO
CUBE AGREE C:62, RACE
CUBE AGREE C:62, SLT
CUBE AGREE C:62, SLX
CUBE ATTAIN C:62, RACE
CUBE ATTAIN C:62, SLT
CUBE ATTAIN C:62, SLX
CUBE ATTAIN, PRO
CUBE ATTAIN, RACE
CUBE ATTAIN, SLX
CUBE CROSS RACE C:62, PRO
CUBE CROSS RACE C:62, RACE
CUBE CROSS RACE C:62, SLX
CUBE CROSS RACE C:68X, SLT
CUBE CROSS RACE C:68X, TE
Cube Litening Air C:68X RACE
Cube Litening Air C:68X SLX
CUBE NULANE C:62, SLT
CUBE NULANE C:62, SLX
CUBE NULANE C:62, SLX FE
CUBE NULANE, ONE
CUBE NULANE, PRO
CUBE NULANE, PRO FE
CUBE NUROAD C:62, EX
CUBE NUROAD C:62, ONE
CUBE NUROAD C:62, PRO
CUBE NUROAD C:62, RACE
CUBE NUROAD C:62, SLT
CUBE NUROAD C:62, SLX
CUBE NUROAD, EX
CUBE NUROAD, ONE
CUBE NUROAD, ONE FE
CUBE NUROAD, PRO
CUBE NUROAD, PRO FE
CUBE NUROAD, RACE
CUBE NUROAD, RACE FE
Elves Falath Evo Disc
ELVES FALATH EVO-R DISC
ELVES VANYAR PRO DISC
Factor 02 VAM
Factor O2 – Shimano Ultegra
Factor OSTRO – SRAM Force
Factor OSTRO VAM
Felt BREED Advanced Force 1 eTap AXS
Felt BREED Advanced GRX 610
Felt BREED Advanced GRX 820
Felt BREED FRD UN1TD LE SRAM RED XPLOR AXS
Focus ATLAS 6.8
Focus ATLAS 8.0
Focus ATLAS 8.7
Focus ATLAS 8.8
Focus ATLAS 8.9
Focus IZALCO MAX 8.7
Focus IZALCO MAX 8.8
Focus IZALCO MAX 8.9
Focus IZALCO MAX 9.0
Focus IZALCO MAX 9.7
Focus IZALCO MAX 9.8
Focus IZALCO MAX 9.9
Focus PARALANE 8.7
Focus PARALANE 8.8
Focus PARALANE 8.9
Giant Contend 2
Giant Contend 3
Giant Contend AR 1
Giant Contend AR 1
Giant Contend AR 2
Giant Contend AR 2
Giant Contend AR 3
Giant Contend AR 3
Giant Contend AR 4
Giant Contend SL Disc 1
Giant Defy Advanced 0
Giant Defy Advanced 1
Giant Defy Advanced 2
Giant Defy Advanced 3
Giant Defy Advanced Pro 0
Giant Defy Advanced Pro 1
Giant Defy Advanced Pro 2
Giant Defy Advanced SL 0
Giant Defy Advanced SL 1
Giant Propel Advanced 1
Giant Propel Advanced 2
Giant Propel Advanced Pro 0
Giant Propel Advanced Pro 0 1X
Giant Propel Advanced Pro 0 AXS
Giant Propel Advanced Pro 0 Di2
Giant Propel Advanced Pro 1
Giant Propel Advanced Pro 1
Giant Propel Advanced SL 0
Giant Propel Advanced SL 0
Giant Propel Advanced SL 0 Dura-Ace
Giant Propel Advanced SL 0 RED
Giant Propel Advanced SL 1
Giant Propel Advanced SL 1
Giant Propel Advanced SL 1
Giant Revolt 0
Giant Revolt 1
Giant Revolt 2
Giant Revolt Advanced 0
Giant Revolt Advanced 1
Giant Revolt Advanced 2
Giant Revolt Advanced 3
Giant Revolt Advanced Pro 0
Giant Revolt Advanced Pro 1
Giant Revolt X 1
Giant TCR Advanced 0 AXS
Giant TCR Advanced 0 Di2
Giant TCR Advanced 0 PC
Giant TCR Advanced 1
Giant TCR Advanced 1 KOM
Giant TCR Advanced 1 PC
Giant TCR Advanced 2
Giant TCR Advanced 2 KOM
Giant TCR Advanced 2 PC
Giant TCR Advanced Pro 0 AXS
Giant TCR Advanced Pro 0 Di2
Giant TCR Advanced Pro 1 AXS
Giant TCR Advanced Pro 1 Di2
Giant TCR Advanced Pro 2
Giant TCR Advanced SL 0 DA
Giant TCR Advanced SL 0 Red
Giant TCR Advanced SL 1
Giant TCR Advanced SL 1 AXS
Giant TCR Advanced SL Disc 1
GiantDefy Advanced 0
GiantDefy Advanced Pro 2
GiantPropel Advanced 1
GiantPropel Advanced 2
Look 765 Gravel Apex XPLR 1×12
Look 765 Gravel RS Apex AXS
Look 765 GravelRS Ekar 1×13
Look 765 Optimum 105 Di2
Look 765 Optimum Rival eTap AXS
Look 765 Optimum Shimano 105
Look 765 Optimum Ultegra Di2
Look 785 Huez 105 Di2
Look 785 Huez Rival eTap AXS
Look 785 Huez Shimano 105
Look 785 Huez Ultegra Di2
Look 795 BladeRS Dura Ace Di2
Look 795 BladeRS Dura Ace Di2 / R50D
Look 795 BladeRS Dura Ace Di2 / WS EVO
Look 795 BladeRS Red eTap AXS
Look 795 BladeRS Super Record EPS
Look 795 BladeRS Ultegra
Merida REACTO 4000
Merida REACTO 6000
Merida REACTO 8000
Merida REACTO 9000
Merida REACTO TEAM
Merida SCULTURA 10K
Merida SCULTURA 4000
Merida SCULTURA 5000
Merida SCULTURA 6000
Merida SCULTURA 7000
Merida SCULTURA 8000
Merida SCULTURA 9000
Merida SCULTURA ENDURANCE 300
Merida SCULTURA ENDURANCE 400
Merida SCULTURA ENDURANCE 4000
Merida SCULTURA ENDURANCE 6000
Merida SCULTURA ENDURANCE 8000
Merida SCULTURA ENDURANCE 9000
Merida SCULTURA ENDURANCE GR 500
Merida SCULTURA ENDURANCE GR 5000
Merida SCULTURA ENDURANCE GR 8000
Merida SCULTURA ENDURANCE RIVAL-EDITION
Merida SCULTURA TEAM
Orbea TERRA H30
Orbea TERRA H30 1X
Orbea TERRA H40
Orbea TERRA H45 1X
Orbea TERRA M20iTEAM
Orbea TERRA M20TEAM
Orbea TERRA M21eTEAM 1X
Orbea TERRA M30TEAM
Orbea TERRA M30TEAM 1X
Orbea TERRA M31eTEAM 1X
Rose Backroad AL GRX RX400
Rose Backroad AL GRX RX610 1×12
Rose Backroad AL GRX RX610 1×12 TS
Rose Backroad APEX AXS XPLR 1×12
Rose Backroad FF Classified 2×12
Rose Backroad FF Force AXS XPLR
Rose Backroad FF GRX RX825 Di2
Rose Backroad FF Red XPLR AXS
Rose Backroad Force AXS XPLR 1×12
Rose Backroad GRX RX820 1×12
RoseXlite 04 105 Di2 Advanced
RoseXlite 04 Rival AXS
RoseXlite Xlite 04 105 Di2
Specalized Aethos Sport – Shimano 105
Specalized S-Works Aethos – Campagnolo
Specalized Aethos Comp – Shimano 105 Di2
Specalized Aethos Expert
Specalized Aethos Pro – Shimano Ultegra Di2
Specalized Allez
Specalized Allez Sport
Specalized Allez Sprint Comp
Specalized Roubaix SL8
Specalized Roubaix SL8 Comp
Specalized Roubaix SL8 Expert
Specalized Roubaix SL8 Pro
Specalized Roubaix SL8 Sport 105
Specalized S-Works Roubaix SL8
Specalized S-Works Tarmac SL8 – SRAM Red eTap AXS
Specalized Tarmac SL7 Comp – Shimano 105 Di2
Specalized Tarmac SL7 Sport – Shimano 105
Specalized Tarmac SL8 Expert
Specalized Tarmac SL8 Expert
Specalized Tarmac SL8 Pro – SRAM Force eTap AXS
Specalized Tarmac SL8 Pro – Ultegra Di2
Specialized Aethos Comp – Shimano 105 Di2
Specialized Aethos Pro – Shimano Ultegra Di2
Specialized Diverge Comp
Specialized Diverge Comp Carbon
Specialized Diverge Comp E5
Specialized Diverge E5
Specialized Diverge E5 Elite
Specialized Diverge Expert Carbon
Specialized Diverge Sport Carbon
Specialized S-Works Aethos – Dura-Ace Di2
Specialized S-Works Aethos – SRAM Red eTap AXS
Specialized S-Works Tarmac SL8 Dura-Ace Di2
Specialized S-Works Tarmac SL8 LTD – Remco’s ‘Golden Season’
SpecializedS-Works Tarmac SL8 – Shimano Dura-Ace Di2
SpecializedS-Works Tarmac SL8 – SRAM RED AXS
SpecializedTarmac SL7 Comp – Shimano 105 Di2
SpecializedTarmac SL8 Expert
SpecializedTarmac SL8 Expert – Ultegra Di2
SpecializedTarmac SL8 Pro – SRAM Force eTap AXS
SpecializedTarmac SL8 Pro – Ultegra Di2
SpecializedTarmac SL8 Pro – Shimano Ultegra Di2
Standert Kreissäge RS
SuperSix EVO Hi-MOD 1
Trek Checkpoint ALR 3
Trek Checkpoint ALR 4
Trek Checkpoint ALR 5
Trek Checkpoint SL 5 AXS Gen 3
Trek Checkpoint SL 6 AXS Gen 3
Trek Checkpoint SL 7 AXS Gen 3
Trek Domane AL 2 Gen 4
Trek Domane AL 4 Gen 4
Trek Domane AL 5 Gen 4
Trek Domane SL 6 Gen 4
Trek Domane SL 7 Gen 4
Trek Domane SLR 6 AXS Gen 4
Trek Domane SLR 7 AXS Gen 4
Trek Domane SLR 7 Gen 4
Trek Domane SLR 7 Gen 4
Trek Domane SLR 8 AXS Gen 4
Trek Domane SLR 9 AXS Gen 4
Trek Domane SLR 9 Gen 4
Trek Domane+ AL 5
Trek Domane+ SLR 7
Trek Domane+ SLR 7 AXS
Trek Madone SL 6 Di2 Gen 6
Trek Madone SL 6 Gen 7
Trek Madone SL 7 AXS Gen 6
Trek Madone SL 7 Gen 6
Trek Madone SL 7 Gen 7
Trek Madone SLR 6 AXS Gen 7
Trek Madone SLR 6 Gen 7
Trek Madone SLR 7 AXS Gen 7
Trek Madone SLR 7 Gen 7
Trek Madone SLR 9 AXS Gen 7
Trek Madone SLR 9 Gen 7
Current
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Image
Title
Colnago G4-X Shimano GRX Di2 825 2x
—
Year
2025
—
Price
£4,399.00
—
Bike Info
Worldwide Shipping: Yes
Delivery across the globe!
Warranty: 3 Years
Limited warranty website average: 3.12 years
Released: 2025
The bike was released this year
Bike Type: Road
The style of riding intended for this bike
Bike Spec
Weight
The weight of this bike is unknown
Groupset
Shimano GRX 2x: Shimano FD-RX820, Shimano GRX 2x: Shimano FD-RX820
Wheelset
Vision SC 45 Disc
Brake Type: Disc Brake
Welcome to the future!
Frameset Material
Carbon Fiber
Max Tire Size: 45 mm
This is the max tire size you can use
UCI Approved: Yes
You can use for official races
Sizing & Geometry
Frame Sizes
45 48 52 54 57
This frame comes in 5 sizes, this is 0.55 less sizes than the website average .
Frame Details
Frame Material
Carbon Fiber
Forks
Carbon fork for disc brakes, external cables, section with round circumference
Fork Material
The forks are made from Carbon Fiber
Cables: Internally Routed
Routed through bars, stem and frame
Axel Type: Thru-axle
How the wheels are secured to the frame
Brake Type: Disc Brake
Welcome to the future!
Brake Mount:
How the calipers are mounted
Integrated bar and stem: No
You can use any bar and stem
Drivechain Details
Groupset name
Shimano GRX 2x: Shimano FD-RX820, Shimano GRX 2x: Shimano FD-RX820
Electric Groupset: Yes
This bike has electric gears
Shifters
Drivetrain, Shimano GRX 825 Di2 2x (electronical shifting), Shimano GRX 825 Di2 2x (electronical shifting)
Front Derailleur
Shimano GRX 2x: Shimano FD-RX820, Shimano GRX 2x: Shimano FD-RX820
Rear Derailleur
Shimano GRX 2x: Shimano RD-RX820, Shimano GRX 2x: Shimano RD-RX820
Cassette
Shimano GRX 2x: 11-36 12v, Shimano GRX 2x: 11-36 12v
Cranks
Shimano GRX 2x: 48-31T, Shimano GRX 2x: 48-31T
Power Meter: No
This bike doesn't have a power meter
Bottom Bracket
Shimano T47-86mm, Shimano T47-86mm
Chain
Shimano GRX: Shimano CN-M8100 12V, Shimano GRX: Shimano CN-M8100 12V
Wheel & Tire Details
Wheelset Name
Vision SC 45 Disc
Tires
Pirelli Cinturato Gravel 40 TLR, Pirelli Cinturato Gravel 40 TLR
Max Tire Size: 45 mm
This is the max tire size you can use
Brakes
Brake Type: Disc Brake
Welcome to the future!
Brake Mount:
How these disc brakes are mounted
Brakes
Brakes, Shimano RX-820, 160 mm Front / 160 mm Rear, RT-MT800-S rotors, Shimano RX-820, 160 mm Front / 160 mm Rear, RT-MT800-S rotors
Brake Rotors
RT-MT800-S rotors
Other Components
Saddle
Saddle "Prologo" Kappa BK "Selle Italia" Model X BB FEC
Seatpost
Carbon seatpost, 0.15 offset, "D-Shape" section
Handlebars
Deda Gravel 100, Sizes 46s, Width: 400 mm, Sizes 49s - 55s, Width: 420 mm, Sizes 58s, Width: 440 mm, Deda Gravel 100, Sizes 46s, Width: 400 mm, Sizes 49s - 55s, Width: 420 mm, Sizes 58s, Width: 440 mm
Manufactures Description
A balanced gravel racing bike, to perform at its best in every context.
The G4-X is the result of optimizing all those factors that are important when you have to compete or go hard on dirt roads: handling, lightness, downhill rideability, stability, frame responsiveness, and, like all Colnago bikes, surprisingly wonderful to ride.
