2012 Trek Speed Concept 2.5 vs 2011 Specialized Tarmac SL3
We can't match sizes for these two: one of them has no stack and reach for the sizes shown.
What changes on the Specialized Tarmac SL3
- Frame stack
- n/a
- One of the bikes has no number for this
- Frame reach
- n/a
- One of the bikes has no number for this
- Wheelbase
- −7 mm
- Shorter: quicker to change direction
- Head angle
- +0.5°
- Steeper: sharper steering
- Chainstays
- +5 mm
- Longer: more planted
The two frames
We can't draw these frames yet. The Trek Speed Concept 2.5 numbers we have for size M are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Speed Concept 2.5 M | Specialized Tarmac SL3 54 | Difference |
|---|---|---|---|
| Reach | 408 | not listed | |
| Stack | 517 | not listed | |
| Head tube angle | 72.5° | 73° | +0.5° |
| Effective top tube | 518 | not listed | |
| Chainstay length | 400 | 405mm | +5 mm |
| Wheelbase | 985 | 978mm | −7 mm |
| BB drop | 80 | not listed | |
| Standover | 775 | 777mm | +2 mm |
| Seat tube length | 529 | 510mm | −19 mm |
| Head tube length | 101 | 145mm | +44 mm |
| Seat tube angle | not listed | 73.5° |
Differences are the Specialized Tarmac SL3 minus the Trek Speed Concept 2.5. Full charts: 2012 Trek Speed Concept 2.5, 2011 Specialized Tarmac SL3.
Where each sits in its class
Trek Speed Concept 2.5Specialized Tarmac SL3
AggressivePositionUpright
CalmSteeringQuick
PlayfulBalancePlanted
Each bike is ranked against the other road 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 Speed Concept 2.52.5 | Specialized Tarmac SL3S-Works |
|---|---|---|
| Frame | Trek Alpha | Specialized S-Works SL3 FACT |
| Fork | Bontrager Lite E2 Tri | not listed |
| Shifter | SRAM 500 TT | not listed |
| Derailleur | SRAM Apex | not listed |
| Cassette | SRAM PG-1050 | not listed |
| Crankset | SRAM Apex | not listed |
| Tire | Bontrager R1 | not listed |
| Handlebar | Bontrager Bullhorn | not listed |
| Seatpost | Bontrager Concept | not listed |
| Saddle | Vision AeroMax Tri | not listed |
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
