2020 Cervélo PX-Series Base vs 2022 Trek Speed Concept SLR
The M is the Trek Speed Concept SLR size closest to your L Cervélo PX-Series Base. 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 Speed Concept SLR
Compared with the Cervélo PX-Series Base in L, the Trek Speed Concept SLR in M places the top of the head tube 7 mm lower and 7 mm further back, relative to the bottom bracket. Its wheelbase is 13 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −7 mm
- Lower front end
- Frame reach
- −7 mm
- Shorter frame reach
- Wheelbase
- −13 mm
- Shorter: quicker to change direction
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- +5 mm
- Longer: more planted
The two frames
Only the Cervélo PX-Series Base is drawn. The Trek Speed Concept SLR numbers we have for size M are missing the seat angle.
Geometry side by side
| Measurement | Cervélo PX-Series Base L | Trek Speed Concept SLR M | Difference |
|---|---|---|---|
| Reach | 423 | 416 | −7 mm |
| Stack | 524 | 517 | −7 mm |
| Head tube angle | 72.5 | 72.5° | ±0.0° |
| Seat tube angle | 78.5 | not listed | |
| Chainstay length | 405 | 410 | +5 mm |
| Wheelbase | 1008 | 995 | −13 mm |
| BB drop | 75 | 80 | +5 mm |
| Standover | 755 | 785 | +30 mm |
| Head tube length | 126 | 90 | −36 mm |
| Effective top tube | not listed | 518 | |
| Seat tube length | not listed | 525 |
Differences are the Trek Speed Concept SLR minus the Cervélo PX-Series Base. Full charts: 2020 Cervélo PX-Series Base, 2022 Trek Speed Concept SLR.
Where each sits in its class
Cervélo PX-Series BaseTrek Speed Concept SLR
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 | Cervélo PX-Series BaseBase | Trek Speed Concept SLRSLR 7 |
|---|---|---|
| Frame | Cervélo PX-Series | Trek OCLV |
| Fork | Cervélo PX | Trek SC |
| Shifter | Shimano Dura-Ace Di2 | not listed |
| Derailleur | Shimano Dura-Ace Di2 | Shimano Ultegra Di2 |
| Cassette | Shimano Dura-Ace | not listed |
| Chain | Shimano Dura-Ace DI2 | not listed |
| Crankset | Shimano Dura-Ace Di2 | not listed |
| Chainring | Shimano Dura-Ace Di2 | not listed |
| Wheelset | DT Swiss ARC 1100 | Bontrager Aeolus Pro 51 |
| Tire | Victoria Corsa Speed | Bontrager R3 |
| Brake | Shimano Dura-Ace Di2 | Shimano Dura-Ace |
| Rotor | Shimano DURA-ACE | not listed |
| Handlebar | Cervélo P5X Basebar | not listed |
| Headset | FSA IS2 | not listed |
| Seatpost | Cervélo SP21 | not listed |
| Saddle | Ism PS 1.0 | not listed |
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