2026 Colnago G4-X Shimano vs 2026 Trek Boone
The 49 is the Trek Boone 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 Trek Boone
Compared with the Colnago G4-X Shimano in 450, the Trek Boone in 49 places the top of the head tube at about the same height and 4 mm further forward, relative to the bottom bracket.
- Frame stack
- −1 mm
- About the same height
- Frame reach
- +4 mm
- Longer frame reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- ±0.0°
- About the same head angle
- 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 | Trek Boone 49 | Difference |
|---|---|---|---|
| Reach | 371 | 375 | +4 mm |
| Stack | 535 | 534 | −1 mm |
| Head tube angle | 71 | 71.0° | ±0.0° |
| Seat tube angle | 74 | not listed | |
| Effective top tube | 524 | 518 | −6 mm |
| Chainstay length | 430 | 425 | −5 mm |
| BB drop | 72 | 70 | −2 mm |
| Fork length | 406 | not listed | |
| Wheelbase | not listed | 1001 | |
| Standover | not listed | 747 | |
| Seat tube length | not listed | 476 | |
| Head tube length | not listed | 110 |
Differences are the Trek Boone minus the Colnago G4-X Shimano. Full charts: 2026 Colnago G4-X Shimano, 2026 Trek Boone.
Where each sits in its class
Colnago G4-X ShimanoTrek Boone
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 | Trek Boone |
|---|---|---|
| Frame | Colnago G4-X | not listed |
| Fork | Colnago G4-X Carbon | not listed |
| Cassette | Shimano GRX | not listed |
| Crankset | Shimano GRX RX620 | not listed |
| Chainring | Shimano GRX | not listed |
| Bottom bracket | Shimano GRX | not listed |
| Wheelset | Fulcrum Lite ER | not listed |
| Brake | Shimano GRX RX820 | not listed |
| Rotor | Shimano GRX RX820 | not listed |
| Headset | Acros Sealed Bearings | not listed |
| Seatpost | Colnago Carbon D-Shape | not listed |
| Saddle | Selle Italia Novus Boost Evo Superflow | not listed |
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