2019 Specialized Crux Expert vs 2021 Trek Boone Disc
The 50 is the Trek Boone Disc size closest to your 49 Specialized Crux Expert. 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 Disc
Compared with the Specialized Crux Expert in 49, the Trek Boone Disc in 50 places the top of the head tube 6 mm lower and 6 mm further forward, relative to the bottom bracket. Its wheelbase is 6 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −6 mm
- Lower front end
- Frame reach
- +6 mm
- Longer frame reach
- Wheelbase
- −6 mm
- Shorter: quicker to change direction
- Head angle
- +0.5°
- Steeper: sharper steering
- Chainstays
- ±0 mm
- About the same
The two frames
Only the Specialized Crux Expert is drawn. The Trek Boone Disc numbers we have for size 50 are missing the seat angle.
Geometry side by side
| Measurement | Specialized Crux Expert 49 | Trek Boone Disc 50 | Difference |
|---|---|---|---|
| Reach | 369mm | 375 | +6 mm |
| Stack | 540mm | 534 | −6 mm |
| Head tube angle | 70.5° | 71.0° | +0.5° |
| Seat tube angle | 75.5° | not listed | |
| Effective top tube | 509mm | 518 | +9 mm |
| Chainstay length | 425mm | 425 | ±0 mm |
| Wheelbase | 1007mm | 1001 | −6 mm |
| BB drop | 71mm | 70 | −1 mm |
| BB height | 281.5mm | not listed | |
| Standover | 781.5mm | 747 | −35 mm |
| Seat tube length | 490mm | 476 | −14 mm |
| Fork length | 400mm | not listed | |
| Head tube length | 115mm | 110 | −5 mm |
Differences are the Trek Boone Disc minus the Specialized Crux Expert. Full charts: 2019 Specialized Crux Expert, 2021 Trek Boone Disc.
Where each sits in its class
Specialized Crux ExpertTrek Boone Disc
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 | Specialized Crux ExpertExpert | Trek Boone Disc6 Disc |
|---|---|---|
| Shifter | SRAM Force 1 | Shimano GRX RX810 |
| Derailleur | SRAM Force 1 | Shimano GRX RX810 |
| Cassette | SRAM PG 1130 | Shimano Ultegra HG800-11 |
| Chain | KMC X11 EL | Shimano Ultegra HG701 |
| Crankset | Praxis Zayante | Shimano GRX RX810 |
| Chainring | Praxis Wave Tech | not listed |
| Bottom bracket | Praxis M30 | Trek BB90 |
| Wheelset | Roval C38 | Bontrager Paradigm Comp 25 |
| Tire | Specialized Tracer Pro | Bontrager CX3 Team Issue |
| Brake | SRAM Force | Shimano GRX |
| Saddle | Specialized Phenom Expert | Bontrager P3 Verse |
| Frame | not listed | Trek OCLV |
| Fork | not listed | Trek IsoSpeed Cross |
| Handlebar | not listed | Bontrager Elite IsoZone VR-CF |
| Seatpost | not listed | Bontrager Seatmast Cap |
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