2012 Trek Superfly AL vs 2014 Trek X-Caliber
The XL is the Trek X-Caliber size closest to your 21" Trek Superfly AL. 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 Superfly AL in 21", the Trek X-Caliber in XL places the top of the head tube 15 mm lower and 7 mm further forward, relative to the bottom bracket. Its wheelbase is 17 mm longer, which can contribute to stability at speed.
- Frame stack
- −15 mm
- Lower front end
- Frame reach
- +7 mm
- Longer frame reach
- Wheelbase
- +17 mm
- Longer: steadier at speed
- Head angle
- −1.4°
- Slacker: calmer steering
- Chainstays
- −7 mm
- Shorter: livelier
The two frames
We can't draw these frames yet. The Trek Superfly AL numbers we have for size 21" are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Superfly AL 21" | Trek X-Caliber XL | Difference |
|---|---|---|---|
| Reach | 451 | 458 | +7 mm |
| Stack | 635 | 620 | −15 mm |
| Head tube angle | 71° | 69.6° | −1.4° |
| Effective top tube | 638 | 659 | +21 mm |
| Chainstay length | 452 | 445 | −7 mm |
| Wheelbase | 1148 | 1165 | +17 mm |
| BB height | 325 | 316 | −9 mm |
| Standover | 837 | 825 | −12 mm |
| Seat tube length | 533 | 521 | −12 mm |
| Head tube length | 135 | 120 | −15 mm |
| BB drop | not listed | 53 |
Differences are the Trek X-Caliber minus the Trek Superfly AL. Full charts: 2012 Trek Superfly AL, 2014 Trek X-Caliber.
Where each sits in its class
Trek Superfly ALTrek 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 Superfly AL100 AL | Trek X-Caliber4 |
|---|---|---|
| Frame | Trek Alpha Platinum | Trek Alpha Gold |
| Fork | Fox Evolution | SR Suntour M3030 |
| Shifter | SRAM X7 | Shimano Altus EF51 |
| Derailleur | SRAM X-7 | Shimano Altus, Shimano Altus M280 |
| Cassette | Shimano HG62-10 | Shimano HG31 |
| Crankset | SRAM S1000 | Shimano M131 |
| Wheelset | Bontrager FCC | Formula DC-20 |
| Brake | Avid Elixir 1 | Trek HL 280 |
| Headset | FSA NO.57E | not listed |
| Seatpost | Bontrager SSR | Bontrager SSR |
| Saddle | Bontrager Evoke 1 | Bontrager Evoke 1 |
| Tire | not listed | Bontrager XR1 |
| Stem | not listed | Bontrager Approved |
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