2024 Colnago G4-X Shimano vs 2026 Specialized Crux Comp Shimano
The 49 is the Specialized Crux Comp Shimano 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 Specialized Crux Comp Shimano
Compared with the Colnago G4-X Shimano in 450, the Specialized Crux Comp Shimano in 49 places the top of the head tube 5 mm lower and 4 mm further forward, relative to the bottom bracket.
- Frame stack
- −5 mm
- Lower front end
- Frame reach
- +4 mm
- Longer frame 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 450 are missing the wheelbase. The numbers below still compare.
Geometry side by side
| Measurement | Colnago G4-X Shimano 450 | Specialized Crux Comp Shimano 49 | Difference |
|---|---|---|---|
| Reach | 371 | 375 | +4 mm |
| Stack | 535 | 530 | −5 mm |
| Head tube angle | 71 | 70.5 | −0.5° |
| Seat tube angle | 74 | 75.5 | +1.5° |
| Effective top tube | 524 | 512 | −12 mm |
| Chainstay length | 430 | 425 | −5 mm |
| BB drop | 72 | 74 | +2 mm |
| Seat tube length | 450 | not listed | |
| Fork length | 406 | not listed | |
| Wheelbase | not listed | 1008 | |
| Head tube length | not listed | 100 |
Differences are the Specialized Crux Comp Shimano minus the Colnago G4-X Shimano. Full charts: 2024 Colnago G4-X Shimano, 2026 Specialized Crux Comp Shimano.
Where each sits in its class
Colnago G4-X ShimanoSpecialized Crux Comp Shimano
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 822 1x | Specialized Crux Comp ShimanoComp Shimano GRX |
|---|---|---|
| Frame | Colnago G4-X | Specialized Crux FACT 10r Carbon |
| Shifter | Shimano GRX RX822 | Shimano GRX RX820 820 |
| Derailleur | Shimano GRX RX822 | Shimano GRX RX822-GS |
| Cassette | Shimano GRX | Shimano XT |
| Crankset | Shimano GRX | Shimano GRX RX820 |
| Chainring | Shimano GRX | Shimano GRX RX820 |
| Bottom bracket | Acros T47 | Shimano BB |
| Wheelset | Fulcrum Lite ER | DT Swiss G540 |
| Tire | Pirelli Cinturato Gravel | Specialized Pathfinder Pro 2BR |
| Brake | Shimano GRX RX820 | Shimano GRX RX820 |
| Rotor | Shimano RT-MT800 | Shimano 180mm CenterLock |
| Handlebar | Deda Gravel 100 | Specialized Adventure Gear |
| Stem | Deda Gravel | Specialized 3D-forged alloy |
| Headset | Acros T47 | not listed |
| Seatpost | Colnago D-shape | Roval Terra Carbon |
| Saddle | Selle Italia Novus Boost Evo Superflow FeC | Specialized Body Geometry Power Sport |
| Bottle cage | Colnago Matt Black | not listed |
| Fork | not listed | Specialized FACT carbon |
| Chain | not listed | Shimano XT M8100 |
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