2018 Trek Émonda ALR Frameset vs 2020 Cervélo S3 Base
The 51 is the Cervélo S3 Base size closest to your 50 Trek Émonda ALR Frameset. 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 Cervélo S3 Base
Compared with the Trek Émonda ALR Frameset in 50, the Cervélo S3 Base in 51 places the top of the head tube 5 mm lower and 5 mm further back, relative to the bottom bracket. Its wheelbase is 3 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −5 mm
- Lower front end
- Frame reach
- −5 mm
- Shorter frame reach
- Wheelbase
- −3 mm
- Shorter: quicker to change direction
- Head angle
- −0.1°
- About the same head angle
- Chainstays
- −5 mm
- Shorter: livelier
The two frames
We can't draw these frames yet. The Trek Émonda ALR Frameset numbers we have for size 50 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Émonda ALR Frameset 50 | Cervélo S3 Base 51 | Difference |
|---|---|---|---|
| Reach | 374 | 369 | −5 mm |
| Stack | 535 | 530 | −5 mm |
| Head tube angle | 72.1° | 72 | −0.1° |
| Effective top tube | 521 | not listed | |
| Chainstay length | 410 | 405 | −5 mm |
| Wheelbase | 974 | 970.8 | −3 mm |
| BB drop | 72 | 72.5 | +1 mm |
| Standover | 707 | 742.1 | +35 mm |
| Seat tube length | 456 | not listed | |
| Head tube length | 130 | 123.9 | −6 mm |
| Seat tube angle | not listed | 73 |
Differences are the Cervélo S3 Base minus the Trek Émonda ALR Frameset. Full charts: 2018 Trek Émonda ALR Frameset, 2020 Cervélo S3 Base.
Where each sits in its class
Trek Émonda ALR FramesetCervélo S3 Base
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 Émonda ALR FramesetALR Frameset | Cervélo S3 BaseBase |
|---|---|---|
| Frame | Trek Ultralight 300 | Cervélo S3 |
| Fork | not listed | Cervélo S3 carbon |
| Shifter | not listed | Shimano Ultegra |
| Derailleur | not listed | Shimano Ultegra mechanical |
| Cassette | not listed | Shimano Ultegra |
| Chain | not listed | Shimano HG-X11 Ultegra |
| Crankset | not listed | Shimano Ultegra |
| Chainring | not listed | Shimano Ultegra |
| Wheelset | not listed | DT Swiss P1800 Spline |
| Tire | not listed | Continental Grand Prix |
| Brake | not listed | Shimano Ultegra |
| Rotor | not listed | Shimano Ultegra |
| Handlebar | not listed | Cervélo AB09 |
| Stem | not listed | Cervélo ST29 |
| Headset | not listed | FSA integrated |
| Seatpost | not listed | Cervélo SP20 |
| Saddle | not listed | Prologo Dimension |
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