2026 Colnago G4-X vs 2025 Commencal 365 Signature
The Commencal 365 Signature size closest to your 520 is the S. Compare the S instead
What changes on the Commencal 365 Signature
Compared with the Colnago G4-X in 520, the Commencal 365 Signature in XL places the top of the head tube 47 mm higher and 55 mm further forward, relative to the bottom bracket.
- Frame stack
- +47 mm
- Higher front end
- Frame reach
- +55 mm
- Longer frame reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- −0.1°
- About the same head angle
- Chainstays
- −5 mm
- Shorter: livelier
The two frames
We can't draw these frames yet. The Colnago G4-X numbers we have for size 520 are missing the wheelbase. The numbers below still compare.
Geometry side by side
| Measurement | Colnago G4-X 520 | Commencal 365 Signature XL | Difference |
|---|---|---|---|
| Reach | 390 | 445 mm | +55 mm |
| Stack | 573 | 620 mm | +47 mm |
| Head tube angle | 71.5 | 71.4° | −0.1° |
| Seat tube angle | 73.5 | 73.8° | +0.3° |
| Chainstay length | 430 | 425 mm | −5 mm |
| BB drop | 70 | 70 mm | ±0 mm |
| Fork length | 406 | 410 mm | +4 mm |
| Effective top tube | not listed | 625 mm | |
| Wheelbase | not listed | 1107.4 mm | |
| Standover | not listed | 800 mm | |
| Seat tube length | not listed | 540 mm | |
| Head tube length | not listed | 185 mm |
Differences are the Commencal 365 Signature minus the Colnago G4-X. Full charts: 2026 Colnago G4-X, 2025 Commencal 365 Signature.
Where each sits in its class
Colnago G4-XCommencal 365 Signature
Each bike is ranked against the other gravel bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Colnago G4-XShimano GRX 822 1x | Commencal 365 SignatureSignature |
|---|---|---|
| Frame | Colnago G4-X | not listed |
| Shifter | Shimano GRX RX822 GRX 822 | SRAM eTap AXS |
| Derailleur | Shimano RD-RX822-SGS GRX 822, Shimano GRX RX820 | SRAM Force XPLR AXS |
| Cassette | Shimano GRX | SRAM XPLR XG-1271 |
| Chain | Shimano GRX | SRAM Force |
| Crankset | Shimano GRX | SRAM Force 1 |
| Chainring | Shimano GRX | not listed |
| Bottom bracket | SRAM DUB T47 | SRAM DUB |
| Wheelset | Fulcrum Lite ER | not listed |
| Tire | Pirelli Cinturato Gravel | Schwalbe G-ONE |
| Brake | Shimano GRX GRX 822 | SRAM eTap AXS |
| Rotor | Shimano GRX | not listed |
| Handlebar | Deda Gravel 100 | Spank Flare 25 |
| Stem | Deda Stem | Ride Alpha Gravel 70 |
| Grips | Deda Grips | Spank Wing Gravel Dropbar Tape Plug |
| Headset | Deda Headset | Acros IS52 IS52 |
| Seatpost | Deda Seatpost | RockShox Reverb XPLR |
| Saddle | Novus Boost Evo Superflow | fizik Terra Alpaca X5 |
| Bottle cage | Colnago Matt Black | not listed |
| Hub | not listed | DT Swiss 350 |
| Rim | not listed | DT Swiss GR1600 |
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