Colnago G4-X

Frame

G4-X

Specifications

Manufacturer
Colnago
Name
G4-X
Discipline
Gravel
Material
Carbon
Head Tube
Tapered[1]
Max Tyre Width (mm)
45
Wheel Sizes
700c / 29", 650b / 27.5"
Frame Size
45, 48, 52, 54, 57
Front Axle Standard
12 × 100 mm
Rear Axle Standard
12 × 142 mm
Rear Derailleur Mount
Standard Hanger
BB Standard
T47 INTERNAL[2]
BB Thread Type
T47
Disc Brake Mount
Flat Mount
Di2 Compatible
Yes
Cable Routing
Integrated
Sources
  1. [1] colnago.com, checked 20 Aug 2026: Head Tube
  2. [2] colnago.com, checked 23 Aug 2026: BB Standard

Included Components

  • fork
    Colnago G4-X Fork
  • headset
    Colnago G4-X Headset
  • seatpost
    Colnago G4-X Seatpost

Compatibility

Colnago G4-X is a Colnago gravel frame. Everything listed below was matched on a specification we hold for both parts: the interface each pairing actually depends on, such as freehub body, speed count, actuation or mounting standard. Where we could not verify that interface, the part is left out rather than assumed to fit.

Brake calipers this frame mounts20

2-PISTON FLAT MOUNT BRAKE CALIPERMechanically compatible

Shimano

2-PISTON FLAT MOUNT BRAKE CALIPER

  • Both use a flat mount disc brake
Apex 1 Hydraulic Disc BrakeMechanically compatible

SRAM

Apex 1 Hydraulic Disc Brake

  • Both use a flat mount disc brake
Apex Disc BrakeMechanically compatible

SRAM

Apex Disc Brake

  • Both use a flat mount disc brake
Brake Caliper (BR-R03A-140R)Mechanically compatible

LTWOO

Brake Caliper (BR-R03A-140R)

  • Both use a flat mount disc brake
Brake Caliper (BR-R03B-140R)Mechanically compatible

LTWOO

Brake Caliper (BR-R03B-140R)

  • Both use a flat mount disc brake
Brake Caliper (BR-R04A-160F)Mechanically compatible

LTWOO

Brake Caliper (BR-R04A-160F)

  • Both use a flat mount disc brake
Brake Caliper (BR-R04B-160F)Mechanically compatible

LTWOO

Brake Caliper (BR-R04B-160F)

  • Both use a flat mount disc brake
Brake Caliper (BR-R06A-140F)Mechanically compatible

LTWOO

Brake Caliper (BR-R06A-140F)

  • Both use a flat mount disc brake
Brake Caliper (BR-R06B-140F)Mechanically compatible

LTWOO

Brake Caliper (BR-R06B-140F)

  • Both use a flat mount disc brake
Brake Caliper (BR-R07A-160R)Mechanically compatible

LTWOO

Brake Caliper (BR-R07A-160R)

  • Both use a flat mount disc brake
Brake Caliper (BR-R07B-160R)Mechanically compatible

LTWOO

Brake Caliper (BR-R07B-160R)

  • Both use a flat mount disc brake
EVO X2 FLATMOUNTMechanically compatible

Hope

EVO X2 FLATMOUNT

  • Both use a flat mount disc brake
Force Aero Disc BrakeMechanically compatible

SRAM

Force Aero Disc Brake

  • Both use a flat mount disc brake
RA7800 Hydraulic Brake Caliper Set (Road/Gravel)Mechanically compatible

WheelTop

RA7800 Hydraulic Brake Caliper Set (Road/Gravel)

  • Both use a flat mount disc brake
Red Aero Disc BrakeMechanically compatible

SRAM

Red Aero Disc Brake

  • Both use a flat mount disc brake
Rival 1 HRD DiscMechanically compatible

SRAM

Rival 1 HRD Disc

  • Both use a flat mount disc brake
Rival Aero Disc BrakeMechanically compatible

SRAM

Rival Aero Disc Brake

  • Both use a flat mount disc brake
RX4 SL FMMechanically compatible

Hope

RX4 SL FM

  • Both use a flat mount disc brake
105 FRONT BRAKE CALIPERMechanically compatible

Shimano

105 FRONT BRAKE CALIPER

  • Both use a flat mount disc brake
105 HYDRAULIC DISC BRAKE FRONT CALIPERMechanically compatible

Shimano

105 HYDRAULIC DISC BRAKE FRONT CALIPER

  • Both use a flat mount disc brake

Bottom brackets for this frame shell20

BB47R24Mechanically compatible

Token

BB47R24

  • Both are t47 internal bottom bracket shells
BB47R29Mechanically compatible

Token

BB47R29

  • Both are t47 internal bottom bracket shells
BB47R30Mechanically compatible

Token

BB47R30

  • Both are t47 internal bottom bracket shells
BB47R386Mechanically compatible

Token

BB47R386

  • Both are t47 internal bottom bracket shells
BB47RGXPMechanically compatible

Token

BB47RGXP

  • Both are t47 internal bottom bracket shells
BB47V24Mechanically compatible

Token

BB47V24

  • Both are t47 internal bottom bracket shells
BB47V25Mechanically compatible

Token

BB47V25

  • Both are t47 internal bottom bracket shells
BB47V29Mechanically compatible

Token

BB47V29

  • Both are t47 internal bottom bracket shells
BB47V386Mechanically compatible

Token

BB47V386

  • Both are t47 internal bottom bracket shells
BB47VGXPMechanically compatible

Token

BB47VGXP

  • Both are t47 internal bottom bracket shells
Pro-Tech Bottom Bracket - T47x68Mechanically compatible

Campagnolo

Pro-Tech Bottom Bracket - T47x68

  • Both are t47 internal bottom bracket shells
Pro-Tech Bottom Bracket - T47x86Mechanically compatible

Campagnolo

Pro-Tech Bottom Bracket - T47x86

  • Both are t47 internal bottom bracket shells
QCK-Tech Bottom Bracket - T47x68Mechanically compatible

Campagnolo

QCK-Tech Bottom Bracket - T47x68

  • Both are t47 internal bottom bracket shells
QCK-Tech Bottom Bracket - T47x86Mechanically compatible

Campagnolo

QCK-Tech Bottom Bracket - T47x86

  • Both are t47 internal bottom bracket shells
T47 - I.B. SHIMANOMechanically compatible

Praxis

T47 - I.B. SHIMANO

  • Both are t47 internal bottom bracket shells
T47 - SHIMANOMechanically compatible

Praxis

T47 - SHIMANO

  • Both are t47 internal bottom bracket shells
T47 ABEC-3 BB for 24/22mm (SRAM) CranksMechanically compatible

Wheels Manufacturing

T47 ABEC-3 BB for 24/22mm (SRAM) Cranks

  • Both are t47 internal bottom bracket shells
T47 ABEC-3 BB for 24mm (Shimano) CranksMechanically compatible

Wheels Manufacturing

T47 ABEC-3 BB for 24mm (Shimano) Cranks

  • Both are t47 internal bottom bracket shells
T47 Angular Contact BB for 24/22mm (SRAM) CranksMechanically compatible

Wheels Manufacturing

T47 Angular Contact BB for 24/22mm (SRAM) Cranks

  • Both are t47 internal bottom bracket shells
T47 Angular Contact BB for 24mm (Shimano) CranksMechanically compatible

Wheels Manufacturing

T47 Angular Contact BB for 24mm (Shimano) Cranks

  • Both are t47 internal bottom bracket shells

Forks with a matching steerer and wheel size20

29er Full Carbon Rigid Mtb Plus ForkMechanically compatible

LightCarbon

29er Full Carbon Rigid Mtb Plus Fork

  • Both use a tapered 1-1/8" to 1.5" steerer
  • Both are built for 700c wheels
700C Disc Brake CX Fork Gravel Carbon ForkMechanically compatible

LightCarbon

700C Disc Brake CX Fork Gravel Carbon Fork

  • Both use a tapered 1-1/8" to 1.5" steerer
  • Both are built for 700c/650b wheels
700C Disc Brake Gravel Carbon Fork Aero Gravel Bike ForkMechanically compatible

LightCarbon

700C Disc Brake Gravel Carbon Fork Aero Gravel Bike Fork

  • Both use a tapered 1-1/8" to 1.5" steerer
  • Both are built for 700c/650b wheels
700C Disc Brake Gravel Carbon Fork Racing Gravel ForkMechanically compatible

LightCarbon

700C Disc Brake Gravel Carbon Fork Racing Gravel Fork

  • Both use a tapered 1-1/8" to 1.5" steerer
  • Both are built for 700c/650b wheels
Allroad ForkMechanically compatible

Deda Elementi

Allroad Fork

  • Both use a tapered 1-1/8" to 1.5" steerer
  • Both are built for 700c wheels
BelvaMechanically compatible

Formula

Belva

  • Both use a tapered 1-1/8" to 1.5" steerer
  • Both are built for 700c/650b wheels
Bomber ZMechanically compatible

Marzocchi

Bomber Z

  • Both use a tapered 1-1/8" to 1.5" steerer
  • Both are built for 700c wheels
Bomber Z1Mechanically compatible

Marzocchi

Bomber Z1

  • Both use a tapered 1-1/8" to 1.5" steerer
  • Both are built for 700c/650b wheels
Bomber Z1 CoilMechanically compatible

Marzocchi

Bomber Z1 Coil

  • Both use a tapered 1-1/8" to 1.5" steerer
  • Both are built for 700c wheels
Bomber Z1 E-OptimizedMechanically compatible

Marzocchi

Bomber Z1 E-Optimized

  • Both use a tapered 1-1/8" to 1.5" steerer
  • Both are built for 700c wheels
Bomber Z2Mechanically compatible

Marzocchi

Bomber Z2

  • Both use a tapered 1-1/8" to 1.5" steerer
  • Both are built for 700c/650b wheels
Bomber Z2 E-OptimizedMechanically compatible

Marzocchi

Bomber Z2 E-Optimized

  • Both use a tapered 1-1/8" to 1.5" steerer
  • Both are built for 700c wheels
Cutthroat Carbon ForkMechanically compatible

Salsa

Cutthroat Carbon Fork

  • Both use a tapered 1-1/8" to 1.5" steerer
  • Both are built for 700c wheels
Firestarter Carbon ForkMechanically compatible

Salsa

Firestarter Carbon Fork

  • Both use a tapered 1-1/8" to 1.5" steerer
  • Both are built for 700c/650b wheels
🚲Mechanically compatible

Lauf

Grit

  • Both use a tapered 1-1/8" to 1.5" steerer
  • Both are built for 700c/650b wheels
🚲Mechanically compatible

Lauf

Grit SL

  • Both use a tapered 1-1/8" to 1.5" steerer
  • Both are built for 700c/650b wheels
JOSH BRYCELAND SELVAMechanically compatible

Formula

JOSH BRYCELAND SELVA

  • Both use a tapered 1-1/8" to 1.5" steerer
  • Both are built for 700c/650b wheels
Pista LeggeraMechanically compatible

Columbus

Pista Leggera

  • Both use a tapered 1-1/8" to 1.5" steerer
  • Both are built for 700c wheels
RC32Mechanically compatible

X-Fusion

RC32

  • Both use a tapered 1-1/8" to 1.5" steerer
  • Both are built for 650b wheels
RC32 29Mechanically compatible

X-Fusion

RC32 29

  • Both use a tapered 1-1/8" to 1.5" steerer
  • Both are built for 700c wheels

Frequently Asked Questions

What fits Colnago G4-X?

On this page we list brake calipers this frame mounts, bottom brackets for this frame shell, forks with a matching steerer and wheel size. Each listing was matched on a specification we hold for both parts; anything we could not verify is omitted rather than assumed to fit.