2026 Colnago G4-X Shimano vs 2025 Commencal 365 Signature
The XS is the Commencal 365 Signature size closest to your 450 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 450, the Commencal 365 Signature in XS places the top of the head tube 29 mm higher and 11 mm further back, relative to the bottom bracket.
- Frame stack
- +29 mm
- Higher front end
- Frame reach
- −11 mm
- Shorter frame reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- −0.5°
- Slacker: calmer steering
- Chainstays
- −10 mm
- Shorter: livelier
The two frames
We can't draw these frames yet. The Colnago G4-X Shimano numbers we have for size 450 are missing the wheelbase. The numbers below still compare.
Geometry side by side
| Measurement | Colnago G4-X Shimano 450 | Commencal 365 Signature XS | Difference |
|---|---|---|---|
| Reach | 371 | 360 mm | −11 mm |
| Stack | 535 | 564 mm | +29 mm |
| Head tube angle | 71 | 70.5° | −0.5° |
| Seat tube angle | 74 | 74° | ±0.0° |
| Effective top tube | 524 | 522.3 mm | −2 mm |
| Chainstay length | 430 | 420 mm | −10 mm |
| BB drop | 72 | 65 mm | −7 mm |
| Fork length | 406 | 410 mm | +4 mm |
| Wheelbase | not listed | 1010 mm | |
| Standover | not listed | 739 mm | |
| Seat tube length | not listed | 460 mm | |
| Head tube length | not listed | 135 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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