2026 Colnago G4-X Shimano vs 2025 Commencal 365 Signature
The M is the Commencal 365 Signature size closest to your 540 Colnago G4-X Shimano. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Commencal 365 Signature
Compared with the Colnago G4-X Shimano in 540, the Commencal 365 Signature in M places the top of the head tube at about the same height and about as far forward, relative to the bottom bracket.
- Frame stack
- −1 mm
- About the same height
- Frame reach
- ±0 mm
- About the same reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- −0.5°
- Slacker: calmer steering
- Chainstays
- −5 mm
- Shorter: livelier
The two frames
We can't draw these frames yet. The Colnago G4-X Shimano numbers we have for size 540 are missing the wheelbase. The numbers below still compare.
Geometry side by side
| Measurement | Colnago G4-X Shimano 540 | Commencal 365 Signature M | Difference |
|---|---|---|---|
| Reach | 400 | 400 mm | ±0 mm |
| Stack | 591 | 590 mm | −1 mm |
| Head tube angle | 71.5 | 71° | −0.5° |
| Seat tube angle | 73 | 73.9° | +0.9° |
| Effective top tube | 581 | 570.3 mm | −11 mm |
| Chainstay length | 430 | 425 mm | −5 mm |
| BB drop | 70 | 70 mm | ±0 mm |
| Fork length | 406 | 410 mm | +4 mm |
| Wheelbase | not listed | 1056.5 mm | |
| Standover | not listed | 767.4 mm | |
| Seat tube length | not listed | 500 mm | |
| Head tube length | not listed | 155 mm |
Differences are the Commencal 365 Signature minus the Colnago G4-X Shimano. Full charts: 2026 Colnago G4-X Shimano, 2025 Commencal 365 Signature.
Where each sits in its class
Colnago G4-X ShimanoCommencal 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-X ShimanoShimano GRX Di2 825 2x | Commencal 365 SignatureSignature |
|---|---|---|
| Frame | Colnago G4-X | not listed |
| Fork | Colnago G4-X Carbon | not listed |
| Cassette | Shimano GRX | SRAM XPLR XG-1271 |
| Crankset | Shimano GRX RX620 | SRAM Force 1 |
| Chainring | Shimano GRX | not listed |
| Bottom bracket | Shimano GRX | SRAM DUB |
| Wheelset | Fulcrum Lite ER | not listed |
| Brake | Shimano GRX RX820 | SRAM eTap AXS |
| Rotor | Shimano GRX RX820 | not listed |
| Headset | Acros Sealed Bearings | Acros IS52 IS52 |
| Seatpost | Colnago Carbon D-Shape | RockShox Reverb XPLR |
| Saddle | Selle Italia Novus Boost Evo Superflow | fizik Terra Alpaca X5 |
| Shifter | not listed | SRAM eTap AXS |
| Derailleur | not listed | SRAM Force XPLR AXS |
| Chain | not listed | SRAM Force |
| Tire | not listed | Schwalbe G-ONE |
| Hub | not listed | DT Swiss 350 |
| Rim | not listed | DT Swiss GR1600 |
| Handlebar | not listed | Spank Flare 25 |
| Stem | not listed | Ride Alpha Gravel 70 |
| Grips | not listed | Spank Wing Gravel Dropbar Tape Plug |
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