Specialized Roubaix SL8 Comp - Shimano 105 Di2 vs Trek Domane SL 6 AXS 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 SL 6 AXS Gen 5 comes out ahead (79% against 77%). That is not a universal verdict — change the terrain or the priority and the order can flip.

Specialized

Roubaix SL8 Comp - Shimano 105 Di2

77% for a typical rider

£3,599 at Brand website

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Trek

Domane SL 6 AXS Gen 5

79% for a typical rider

£3,750 at Brand website

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What actually separates them

Price: The Specialized Roubaix SL8 Comp - Shimano 105 Di2 is £151 cheaper — £3,599 against £3,750.
Riding position: The Trek Domane SL 6 AXS Gen 5 sits you more upright (1.58 stack-to-reach against 1.56). The Specialized Roubaix SL8 Comp - Shimano 105 Di2 is the more aggressive of the two — quicker if you can hold it, harder work if you cannot.

Side by side

Spec	Roubaix SL8 Comp - Shimano 105 Di2	Domane SL 6 AXS Gen 5
Price	£3,599	£3,750
Weight	8.8 kg	8.6 kg
Frame	carbon	carbon
Groupset	Shimano 105 Di2 R7170 2x12 electronic	SRAM Rival AXS 2x12 electronic
Stack / reach	1.56	1.58
Tyre clearance	40 mm	40 mm
Lowest gear	26 in	26 in
Mudguard mounts	Yes	Yes
Comfort	73	88
Speed	46	40
Climbing	66	66
Value	18	16

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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