2018 Trek Procaliber vs 2019 Trek X-Caliber
The XS is the Trek X-Caliber size closest to your S Trek Procaliber. 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 X-Caliber
Compared with the Trek Procaliber in S, the Trek X-Caliber in XS places the top of the head tube 3 mm higher and 7 mm further back, relative to the bottom bracket. Its wheelbase is 17 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- +3 mm
- Higher front end
- Frame reach
- −7 mm
- Shorter frame reach
- Wheelbase
- −17 mm
- Shorter: quicker to change direction
- Head angle
- −0.1°
- About the same head angle
- Chainstays
- ±0 mm
- About the same
The two frames
We can't draw these frames yet. The Trek Procaliber numbers we have for size S are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Procaliber S | Trek X-Caliber XS | Difference |
|---|---|---|---|
| Reach | 382 | 375 | −7 mm |
| Stack | 563 | 566 | +3 mm |
| Head tube angle | 69.3° | 69.2° | −0.1° |
| Effective top tube | 558 | 538 | −20 mm |
| Chainstay length | 425 | 425 | ±0 mm |
| Wheelbase | 1053 | 1036 | −17 mm |
| BB drop | 48 | 58 | +10 mm |
| BB height | 302 | 296 | −6 mm |
| Standover | 753 | 708 | −45 mm |
| Seat tube length | 368 | 343 | −25 mm |
| Head tube length | 100 | 90 | −10 mm |
Differences are the Trek X-Caliber minus the Trek Procaliber. Full charts: 2018 Trek Procaliber, 2019 Trek X-Caliber.
Where each sits in its class
Trek ProcaliberTrek X-Caliber
Each bike is ranked against the other XC 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 | Trek Procaliber6 | Trek X-Caliber7 |
|---|---|---|
| Frame | Trek Alpha Platinum | Trek Alpha Gold |
| Fork | RockShox Recon RL Gold | not listed |
| Shifter | Shimano SLX M7000 | Shimano Acera M3000 |
| Derailleur | Shimano SLX M7020, Shimano XT M8000 | Shimano Deore M4020, Shimano Acera M3000 |
| Cassette | Shimano SLX M7000 | Shimano HG200 |
| Chain | KMC X11-1 | KMC X9 |
| Crankset | Race Face Aeffect | Shimano Acera MT210 |
| Bottom bracket | Trek PF92 | not listed |
| Tire | Bontrager XR2 Team Issue | Bontrager XR2 |
| Hub | Bontrager centerlock | Formula DC20, Formula DC2241 |
| Rim | Bontrager Duster Elite | Bontrager Connection |
| Brake | Shimano Deore M425 | Shimano MT200 |
| Headset | FSA IS2 | not listed |
| Saddle | Bontrager Evoke 2 | Bontrager Arvada |
| Pedals | not listed | VP 536 |
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