Pure aero performance meets everyday usability. The Merida Reacto 5000 2027 is a high-speed carbon aero road bike designed for riders who want race-winning performance without the pro-level price tag. Built around Merida’s latest CF3 carbon aero frame, paired with Shimano 105 Di2 electronic shifting, the Reacto 5000 delivers exceptional speed, efficiency, and value.

Engineered with trickle-down technology from Merida’s WorldTour race bikes, the latest Reacto is more aerodynamic, lighter, and more versatile than ever, now with clearance for up to 32mm tyres. That means faster rolling, improved comfort, and more confidence on real-world UK roads.

Whether you're racing, training, or pushing the pace on fast group rides, the Reacto 5000 blends aero gains, responsive handling, and all-day ride quality.

Key Features

• CF3 Carbon Aero Frame – lightweight, wind-tunnel optimised performance
• Shimano 105 Di2 12-speed groupset – wireless electronic precision shifting
• Enhanced aerodynamics – refined tube profiles for maximum speed
• Up to 32mm tyre clearance – improved comfort and versatility
• Integrated cable routing – clean looks and reduced drag
• Race-ready geometry – fast, aggressive positioning with stable handling

Size Guide (approx.):

• XXS: 150–160cm
• XS: 160–170cm
• S: 170–175cm
• M: 175–180cm
• L: 180–185cm
• XL: 185–195cm

Specification - 

Frame & Fork

• Frame: Merida Reacto CF3 Carbon, aero tube design, internal cable routing, flat mount disc, 12x142mm thru-axle
• Fork: Merida Reacto CF3 Carbon Disc, 12x100mm thru-axle

Drivetrain

• Shifters: Shimano 105 Di2 R7170, 12-speed electronic
• Front Derailleur: Shimano 105 Di2 R7150
• Rear Derailleur: Shimano 105 Di2 R7150
• Chainset: Shimano 105 R7100, 50/34T
• Cassette: Shimano 105 R7100, 12-speed (11-34T)
• Chain: Shimano 12-speed

Brakes

• Brakes: Shimano 105 hydraulic disc
• Rotors: Shimano RT70, 160mm front / 140mm rear

Wheelset & Tyres

• Wheels: Merida Expert SL Disc (tubeless ready)
• Tyres: 700c road tyres, up to 32mm clearance

Cockpit

• Handlebar: Merida Expert Aero handlebar
• Stem: Merida Expert aero stem (internal routing compatible)
• Headset: Integrated

Finishing Kit

• Seatpost: Merida Reacto aero carbon seatpost
• Saddle: Merida Comp SL