2021 Trek Émonda ALR vs 2019 Cervélo R5 Disc Base
The 51 is the Cervélo R5 Disc Base size closest to your 47 Trek Émonda ALR. 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 R5 Disc Base
Compared with the Trek Émonda ALR in 47, the Cervélo R5 Disc Base in 51 places the top of the head tube at about the same height and about as far forward, relative to the bottom bracket.
- Frame stack
- +2 mm
- About the same height
- Frame reach
- +2 mm
- About the same reach
- Wheelbase
- ±0 mm
- About the same
- Head angle
- +0.8°
- Steeper: sharper steering
- Chainstays
- ±0 mm
- About the same
The two frames
We can't draw these frames yet. The Trek Émonda ALR numbers we have for size 47 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Émonda ALR 47 | Cervélo R5 Disc Base 51 | Difference |
|---|---|---|---|
| Reach | 369 | 371 | +2 mm |
| Stack | 522 | 524 | +2 mm |
| Head tube angle | 71.2° | 72 | +0.8° |
| Effective top tube | 513 | 532 | +19 mm |
| Chainstay length | 410 | 410 | ±0 mm |
| Wheelbase | 974 | 974 | ±0 mm |
| BB drop | 72 | 74.5 | +3 mm |
| Standover | 698 | 723 | +25 mm |
| Seat tube length | 444 | not listed | |
| Head tube length | 115 | 103 | −12 mm |
| Seat tube angle | not listed | 73 |
Differences are the Cervélo R5 Disc Base minus the Trek Émonda ALR. Full charts: 2021 Trek Émonda ALR, 2019 Cervélo R5 Disc Base.
Where each sits in its class
Trek Émonda ALRCervélo R5 Disc 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 ALRALR 5 | Cervélo R5 Disc BaseBase |
|---|---|---|
| Frame | Trek Ultralight 300 | Cervélo R5 |
| Fork | Trek Émonda SL | Cervélo R5 Carbon Disc |
| Shifter | Shimano 105 R7020 | Shimano Ultegra R8070 Di2 |
| Derailleur | Shimano 105 R7000 | Shimano Ultegra R8050 GS |
| Cassette | Shimano 105 R7000 | Shimano HG701 Ultegra |
| Chain | Shimano 105 HG601 | Shimano HG701 |
| Crankset | Shimano 105 R7000 | Shimano Ultegra R8000 |
| Bottom bracket | Shimano BB71 | Cervélo BBright |
| Tire | Bontrager R1 Hard-Case Lite | Continental GP4000 S II |
| Rim | Bontrager Affinity | not listed |
| Brake | Shimano 105 | Shimano Ultegra R8070 |
| Handlebar | Bontrager Comp VR-C | Cervélo AB06 |
| Saddle | Bontrager P3 Verse | Prologo Zero 2 STN |
| Chainring | not listed | Shimano Ultegra R8000 |
| Wheelset | not listed | DT Swiss PRC 1450 Spline 35 |
| Rotor | not listed | Shimano SM-RT800 |
| Stem | not listed | Cervélo Carbon Stem |
| Headset | not listed | FSA IS2 |
| Seatpost | not listed | Cervélo R5 SP-18 |
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