The Cerve;lo Caledonia-5 Red AXS is engineered for athletes pushing the boundaries of what endurance cycling can be. On the fringes of cycling and triathlon, these "Big, Stupid Rides" demand equipment that balances comfort for all-day efforts with the responsiveness and speed of a true race bike. The Caledonia-5 is built to handle ultra-distance, ultra-fast racing, delivering pro-level performance across the longest, most demanding courses without sacrificing the handling and reliability required when you&';re running on fumes into Checkpoint One. Every detail has been refined with purpose. The new in-frame storage integrates a hidden compartment for a tube, small multi-tool, and CO2 canister, accessible even with gloves on, just flip the lock and pull. The dropped seatstays make the rear triangle more acute and vertically flexible, providing the compliance needed to absorb shock across rough tarmac during extended riding. Simultaneously, enhanced downtube stiffness maintains the pro-level responsiveness Cerve;lo is known for, ensuring the bike remains sharp and reactive when you need to accelerate. Generous 36mm tire clearance paired with fender mounts gives you total control over setup for any terrain or weather condition. Cerve;lo&';s aerodynamic DNA flows through every aspect of the design. Completely internal cable routing and optimized aero tube shapes deliver free speed when racing long distances against the wind. Split bearing caps allow effortless fit adjustments between high and low positions without bleeding the brakes-a practical refinement for riders making mid-ride changes. The geometry balances aggressive positioning with comfort, creating a platform equally at home in all-day group rides, high-pace gravel sections, and less-than-ideal tarmac. SRAM Red AXS E1 wireless drivetrain delivers instantaneous, precise shifting across all conditions, while the integrated power meter provides real-time data for pacing these extreme efforts. Reserve 42|49TA carbon wheels, developed and tested with Turbulent Aero technology, combine all-day capability with aerodynamic efficiency and have been raced at events as varied as Paris-Roubaix and the Giro d&';Italia. DT Swiss 240 Dicut hubs provide reliable, efficient performance across thousands of kilometers. Key Features Frame - Cerve;lo all-carbon Drivetrain - SRAM Red AXS E1 wireless with integrated power meter Wheelset - Reserve 42|49TA carbon with DT Swiss 240 Dicut hubs