2015 Specialized Epic Expert Carbon 29 vs 2013 Trek Superfly AL Elite
The 21" is the Trek Superfly AL Elite size closest to your XL Specialized Epic Expert Carbon 29. 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 Superfly AL Elite
Compared with the Specialized Epic Expert Carbon 29 in XL, the Trek Superfly AL Elite in 21" places the top of the head tube at about the same height and 11 mm further back, relative to the bottom bracket. Its wheelbase is 20 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- +1 mm
- About the same height
- Frame reach
- −11 mm
- Shorter frame reach
- Wheelbase
- −20 mm
- Shorter: quicker to change direction
- Head angle
- −0.9°
- Slacker: calmer steering
- Chainstays
- −3 mm
- Shorter: livelier
The two frames
Only the Specialized Epic Expert Carbon 29 is drawn. The Trek Superfly AL Elite numbers we have for size 21" are missing the seat angle.
Geometry side by side
| Measurement | Specialized Epic Expert Carbon 29 XL | Trek Superfly AL Elite 21" | Difference |
|---|---|---|---|
| Reach | 462mm | 451 | −11 mm |
| Stack | 634mm | 635 | +1 mm |
| Head tube angle | 70.5° | 69.6° | −0.9° |
| Seat tube angle | 70° | not listed | |
| Effective top tube | 647mm | 643 | −4 mm |
| Chainstay length | 448mm | 445 | −3 mm |
| Wheelbase | 1168mm | 1148 | −20 mm |
| BB drop | 40mm | not listed | |
| BB height | 332mm | 312 | −20 mm |
| Standover | 793mm | 817 | +24 mm |
| Seat tube length | 520mm | 533 | +13 mm |
| Head tube length | 140mm | 118 | −22 mm |
Differences are the Trek Superfly AL Elite minus the Specialized Epic Expert Carbon 29. Full charts: 2015 Specialized Epic Expert Carbon 29, 2013 Trek Superfly AL Elite.
Where each sits in its class
Specialized Epic Expert Carbon 29Trek Superfly AL Elite
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 | Specialized Epic Expert Carbon 29Expert Carbon 29 | Trek Superfly AL Elite100 AL Elite |
|---|---|---|
| Fork | RockShox SID 29 Brain | Fox Evolution |
| Rear shock | Fox Mini-Brain | not listed |
| Shifter | Shimano SLX | Shimano SLX |
| Derailleur | SRAM X-0, Shimano XTR Shadow Plus | Shimano SLX, Shimano Deore XT Shadow |
| Cassette | SRAM PG-1050 | Shimano HG62 |
| Chain | SRAM 1051 | not listed |
| Crankset | SRAM S-2200 | Shimano Deore M552 |
| Wheelset | Roval Control | not listed |
| Tire | Specialized S-Works Fast Trak Control, Specialized Fast Trak Control | not listed |
| Brake | Magura MTS | Shimano SLX |
| Grips | Specialized Sip Grip | not listed |
| Saddle | Specialized Phenom Comp | Bontrager Evoke 2 |
| Frame | not listed | Trek Alpha Platinum |
| Headset | not listed | FSA NO.57SC |
| Seatpost | not listed | Bontrager Rhythm Elite |
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