MERIDA REACTO 4000 – The Ultimate Entry to Elite Aero Performance
Don’t let the price tag fool you—while the REACTO 4000 is the most accessible aero model in the REACTO lineup, it's built with the same race-tuned DNA as the bikes ridden by pro athletes. Designed for road racers, ambitious club riders, and aero enthusiasts looking for premium performance without premium pricing, the REACTO 4000 is your gateway to uncompromised speed and precision.
THE FOUNDATION OF SPEED
🧬 CF3 Carbon Aero Frame
Built on MERIDA’s REACTO CF3 IV carbon frame, which features wind-slicing tube profiles, internal cable routing, and geometry honed for competitive racing.
Generous tyre clearance (up to 30mm) offers added comfort and improved grip without compromising aerodynamics.
Integrated S-FLEX seatpost technology absorbs road vibration for smoother long rides—even on rougher surfaces.
⚙️ Shimano 105 Drivetrain – Proven & Precise
Outfitted with a complete Shimano 105 R7000 series drivetrain and hydraulic disc brakes, the REACTO 4000 delivers race-ready shifting and powerful, consistent braking in all conditions.
The Shimano 105 crankset and cassette provide optimal gearing for everything from fast flats to aggressive climbs.
AERO BUILT, COMFORT DELIVERED
Just like its higher-end siblings, the REACTO 4000 inherits the frame platform praised by top media outlets:
Cycling Weekly: “One of the most complete bikes available.”
Cyclingnews: “Brilliant and faultless.”
Cycling Plus: “Hugely impressed.”
Its lightweight build, sharp handling, and acceleration make it ideal for criterium racers, high-speed group rides, or solo hammerfests on open roads. But it’s not all about speed—thanks to advanced frame compliance, it shines even on imperfect tarmac and cobblestone sectors.
TECHNICAL SPECIFICATIONS
ComponentSpecificationFrame/ForkREACTO CF3 IV Carbon / CF3 IV Disc ForkDrivetrainShimano 105 (2x11-speed)Brakes/RotorsShimano 105 Hydraulic / RT54 RotorsCranksetShimano 105WheelsetMERIDA EXPERT CW Rims / VP HubsTiresContinental Ultra Sport IIICockpitMERIDA EXPERT CW Bars / FSA SMR ACR StemSeatpost/SaddleMERIDA TEAM CW / MERIDA EXPERT CCChain/CassetteKMC X11 / Shimano CS-R7000Bottom BracketSM-BB71-41B, Pressfit 86.5SpokesDouble Butted Black StainlessAxlesMERIDA EXPERT SL Thru-AxlesRear LightIntegrated REACTO Light with BatteryMax Rider Weight120 kgColorGlossy Red / Matt BlackCountry of OriginTaiwan
WHO IS IT FOR?
Aspiring racers looking for their first aero machine
Performance-driven riders seeking high-value carbon
Enthusiasts wanting race-level tech with daily ride comfort
REACTO 4000 – Designed for Performance. Tuned for Real Roads.
Enter the aero world without compromise. Whether you're sprinting for the finish line, pushing your limits in solo efforts, or gliding through your favorite backroads, the REACTO 4000 delivers the speed, handling, and refinement of a true race machine — now within reach.
