2026 Colnago G4-X vs 2026 Specialized Crux Comp Shimano
The 49 is the Specialized Crux Comp Shimano size closest to your 450 Colnago G4-X. 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 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 numbers we have for size 450 are missing the wheelbase. The numbers below still compare.
Geometry side by side
| Measurement | Colnago G4-X 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° |
| Chainstay length | 430 | 425 | −5 mm |
| BB drop | 72 | 74 | +2 mm |
| Fork length | 406 | not listed | |
| Effective top tube | not listed | 512 | |
| Wheelbase | not listed | 1008 | |
| Head tube length | not listed | 100 |
Differences are the Specialized Crux Comp Shimano minus the Colnago G4-X. Full charts: 2026 Colnago G4-X, 2026 Specialized Crux Comp Shimano.
Where each sits in its class
Colnago G4-XSpecialized 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-XShimano GRX 822 1x | Specialized Crux Comp ShimanoComp Shimano GRX |
|---|---|---|
| Frame | Colnago G4-X | Specialized Crux FACT 10r Carbon |
| Shifter | Shimano GRX RX822 GRX 822 | Shimano GRX RX820 820 |
| Derailleur | Shimano RD-RX822-SGS GRX 822, Shimano GRX RX820 | Shimano GRX RX822-GS |
| Cassette | Shimano GRX | Shimano XT |
| Chain | Shimano GRX | Shimano XT M8100 |
| Crankset | Shimano GRX | Shimano GRX RX820 |
| Chainring | Shimano GRX | Shimano GRX RX820 |
| Bottom bracket | SRAM DUB T47 | Shimano BB |
| Wheelset | Fulcrum Lite ER | DT Swiss G540 |
| Tire | Pirelli Cinturato Gravel | Specialized Pathfinder Pro 2BR |
| Brake | Shimano GRX GRX 822 | Shimano GRX RX820 |
| Rotor | Shimano GRX | Shimano 180mm CenterLock |
| Handlebar | Deda Gravel 100 | Specialized Adventure Gear |
| Stem | Deda Stem | Specialized 3D-forged alloy |
| Grips | Deda Grips | not listed |
| Headset | Deda Headset | not listed |
| Seatpost | Deda Seatpost | Roval Terra Carbon |
| Saddle | Novus Boost Evo Superflow | Specialized Body Geometry Power Sport |
| Bottle cage | Colnago Matt Black | not listed |
| Fork | not listed | Specialized FACT carbon |
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