Cannondale Synapse Carbon 1 vs Trek Domane SLR 9 Gen 5
Both are endurance bikes at a similar price. Here is what actually separates them.
The short answer
For a typical all-round rider the Trek Domane SLR 9 Gen 5 comes out ahead (82% against 77%). That is not a universal verdict — change the terrain or the priority and the order can flip.
What actually separates them
- Price
- The Cannondale Synapse Carbon 1 is £750 cheaper — £7,750 against £8,500.
- Weight
- The Trek Domane SLR 9 Gen 5 is 0.8kg lighter, which you notice on long climbs more than anywhere else.
- Riding position
- The Trek Domane SLR 9 Gen 5 sits you more upright (1.58 stack-to-reach against 1.52). The Cannondale Synapse Carbon 1 is the more aggressive of the two — quicker if you can hold it, harder work if you cannot.
- Tyre clearance
- The Cannondale Synapse Carbon 1 takes 42mm tyres against 40mm — the single most common thing buyers wish they had more of.
Side by side
| Spec | Synapse Carbon 1 | Domane SLR 9 Gen 5 |
|---|---|---|
| Price | £7,750 | £8,500 |
| Weight | 8.1 kg | 7.3 kg |
| Frame | carbon | carbon |
| Groupset | Shimano Ultegra Di2 R8100 | Shimano Dura-Ace Di2 R9200 2x12 electronic |
| Stack / reach | 1.52 | 1.58 |
| Tyre clearance | 42 mm | 40 mm |
| Lowest gear | 27 in | 27 in |
| Mudguard mounts | Yes | Yes |
| Comfort | 68 | 88 |
| Speed | 57 | 55 |
| Climbing | 72 | 82 |
| Value | 0 | 0 |
Neither might be the right answer
This page assumes an average rider. Tell us how you actually ride and we will rank these two against everything else at the price.
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