Ultimate CF SLX 8 Di2

Pros

• Sub-7.3 kg complete weight makes it snappy on long climbs and quick out of corners
• Ultegra Di2 electronic 2x12 shifting gives precise, instant gear changes under load
• Carbon wheels and 33 mm tyre clearance let you run wider rubber for comfort without wrecking the bike's climbing focus
• Rigid seatpost keeps pedalling energy direct for sprint efforts and sustained tempo sections
• Traditional cockpit layout makes fit tweaks and stem/handlebar swaps straightforward

Cons

• Less aero profiling than pure aero race frames, so you trade a few seconds on flat, high-speed stretches
• Rigid seatpost reduces compliance on very long endurance days compared with bikes that use compliant posts