Introducing the Merida Reacto 4000, an entry-level carbon aero bike with a race-proven ProTour geometry equipped with a game-changing Shimano 105 drivetrain and powerful hydraulic disc brakes.

This latest edition of the Merida Reacto is more spectacular and efficient, featuring wider tyres, an ultra-clean cockpit cable integration system, and a series of small yet impressive improvements to amplify performance.

To make sure no detail is neglected, Computational Fluid Dynamics (CFD) was used to model the bike's aerodynamic prowess in a virtual wind tunnel, informing changes that led to the most substantial reduction in air resistance.

Small but important enhancements like the integration of the front disc cooler behind the fork, the positioning of the rear disc caliper in the rear triangle, and the creation of new bolt-through axles with the thread seamlessly combined into the fork dropout, all work together to reduce drag and further amplify aerodynamic performance.

The Reacto's accelerated tyre size does little to detract from its aero capabilities, due to a myriad of other improvements. The result is a harmonious fusion of comfort, aerodynamics, lightweight, and style, hailed by Cycling Weekly as 'without doubt, one of the most complete bikes available on the market'.

To guarantee safe and efficient rides, all Reacto models come equipped with powerful hydraulic disc brakes that are neatly attached on the chainstay for better dissipation of braking forces. These brakes are fitted on CNC'd aluminium Disc Cooler fins designed to decrease operating temperatures by up to 35%.

Whether it’s your daily commute or adrenaline-fueled racing, the Merida Reacto 4000 ensures a smooth and agile journey, proving there's more to cycling than just pedaling.