Giant Defy Advanced 1 vs Specialized Roubaix SL8 Sport 105
Both are endurance bikes at a similar price. Here is what actually separates them.
The short answer
For a typical all-round rider the Giant Defy Advanced 1 comes out ahead (77% against 75%). That is not a universal verdict — change the terrain or the priority and the order can flip.
What actually separates them
- Price
- The Giant Defy Advanced 1 is £101 cheaper — £2,799 against £2,900.
- Riding position
- The Specialized Roubaix SL8 Sport 105 sits you more upright (1.56 stack-to-reach against 1.50). The Giant Defy Advanced 1 is the more aggressive of the two — quicker if you can hold it, harder work if you cannot.
- Shifting
- Only the Giant Defy Advanced 1 has electronic shifting. Crisper and lower maintenance, but it needs charging and costs more to replace.
Side by side
| Spec | Defy Advanced 1 | Roubaix SL8 Sport 105 |
|---|---|---|
| Price | £2,799 | £2,900 |
| Weight | 8.9 kg | 8.9 kg |
| Frame | carbon | carbon |
| Groupset | Shimano 105 Di2 12-speed | Shimano 105 R7100 mechanical |
| Stack / reach | 1.50 | 1.56 |
| Tyre clearance | 40 mm | 40 mm |
| Lowest gear | 26 in | 26 in |
| Mudguard mounts | No | No |
| Comfort | 64 | 74 |
| Speed | 50 | 43 |
| Climbing | 65 | 65 |
| Value | 39 | 18 |
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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