Merida Reacto 4000 2024 Aero Road Bicycle | The Bike Affair
Merida Reacto 4000 2024 Aero Road Bicycle | The Bike Affair

Merida Reacto 4000 2024 Aero Road Bicycle


Regular price₹249,990
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Introducing the Merida Reacto 4000 Aero Road Bicycle: Your Gateway to Aero Speed and Performance

Unlock the exhilarating world of aero road cycling with the Merida Reacto 4000 Bicycle. Designed to deliver unadulterated speed and performance, this bike combines race-proven technology with the latest advancements to elevate your riding experience.

Exceptional Aerodynamic Design: Crafted around our lightweight CF3 frame with race-proven geometry, the Reacto 4000 boasts exceptional aerodynamic efficiency, allowing you to slice through the air with minimal resistance. This bike is engineered to maximize speed and efficiency, making it ideal for competitive racing and challenging club rides.

Unrivaled Comfort and Versatility: Despite its aero-focused design, the Reacto 4000 prioritizes rider comfort and versatility. With generous tire clearance of up to 30mm and a fitted S-FLEX carbon seat post, this bike offers a smooth and comfortable ride, even on rough roads and long-distance rides.

Precision Performance: Equipped with the latest super smooth mechanical 12-speed Shimano 105 groupset, the Reacto 4000 delivers flawless shifting and braking performance, ensuring precise control and confidence on every ride. Whether you're sprinting for the finish line or tackling challenging climbs, this bike responds with lightning-fast acceleration and agility.

Acclaimed by Experts: The Reacto 4000 has earned rave reviews from cycling experts around the world. Cycling Weekly hails it as "one of the most complete bikes available on the market," while Cyclingnews describes it as "an utterly brilliant and faultless machine." From serious racers to enthusiasts and ambitious road riders, the Reacto 4000 impresses with its outstanding aerodynamic performance, reduced weight, and sharp handling.

Your Perfect Racing Companion: Whether you're competing in criterium races, sprinting for the line, or exploring challenging training routes, the Reacto 4000 is your perfect racing companion. Its aerodynamic advantage and class-leading comfort allow you to perform at your best, no matter the terrain or conditions.

Elevate your cycling performance with the Merida Reacto 4000 Aero Road Bicycle. With its exceptional aerodynamic design, comfort-enhancing features, and precision performance, this bike is your ticket to a faster, smoother, and more exhilarating ride.


Features of Merida Reacto 4000 Aero Road Bicycle

  • Lightweight CF3 carbon aero frame (approx. 1,150 g - in size M)
  • FSA ACR SMR stem/Merida Expert CW handlebar combination
  • Merida S-FLEX carbon aero post
  • SRAM Rival 12-speed eTAP AXS wireless groupset
  • DT Swiss P1800 wheelset
  • Disc Cooler technology and Wire Port cable integration

Specifications of Merida Reacto 4000 Aero Road Bicycle

Frame Reacto CF3 IV
material: Carbon, 700x30C max. Wheelsize, 100x12/142x12 mm axle standard, BB86.5 bottom bracket standard
Frame Size XXS, XS, S, M, L, XL
Color Gunmetal Grey (Silver), Matt Steel Blue (Silver-Blue)
Fork Reacto CF3 IV Disc
material: Carbon, 700x30c max. wheelsize
Brakes Shimano 105
Hydraulic Disc
Rotors Shimano RT54
160 mm
Brake Lever Shimano 105
Headset FSA ACR
Handlebar Merida Expert CW
material: aluminium, 380 mm (XXS), 400 mm (XS), 420 mm (S/M/L), 440 (XL)
Handlebar Stem FSA SMR ACR
material: aluminium, -6° stem angle, 90 mm-XXS/XS, 100 mm-S, 110 mm-M, 120 mm-L/XL
Grip Merida Road Expert
Derailleur Front: Shimano 105
Rear: Shimano 105 (GS)
Shifters Shimano 105 disc
Seatpost Merida Team CW
Aero shape, 15 mm setback, material: Carbon
Seatclamp Merida Reacto Aero
Saddle Merida Expert SL
V-mount, incl Merida minitool
Chain Shimano CN-M6100-12
Crank Shimano 105
52-36 Teeth, 165 mm-XXS, 170 mm-XS, 172.5 mm-S/M, 175 mm-L/XL
Freewheel Shimano CS-R7100
11-34 Teeth, 12-speed
Bottom Bracket Shimano SM-BB71-41B [Pressfit 86.5 mm]
Hubs VP CLK170F / VP 270SB
100x12 mm width Front Hub
28 spoke holes, Centerlock
12-142 mm width Rear Hub
28 spoke holes, Centerlock
Rim Merida Expert CW
19 mm inner width, 30 mm height, material: aluminium, Tubeless ready (tubeless tape and values not included)
Tyre Front & Rear: 
700x25C, Fold *Tubeless Ready
Axles Merida Expert SL
including removable lever, 6/4 mm allenkey
Spokes Double Butted Black stainless
Light Rear Reacto Light Seat Post USB
Weight 8.73 kg
Max. Weight 120 kg

Geometry of Merida Reacto 4000 Aero Road Bicycle

Frame Size XXS XS S M L XL
Tyre Sizes 28" 28" 28" 28" 28" 28"
ST Seat Tube [mm] 470 500 520 540 560 590
TT Top Tube [mm] 520 536 545 560 575 590
CS Chain Stay Length [mm] 408 408 408 408 408 408
HTA Head Tube Angle [°] 70.5 72 72.5 73.5 73.5 74
STA Seat Tube Angle [°] 74.5 74 74 73.5 73 73
BD Bottom Bracked Drop [mm] 70 70 66 66 66 66
HT Head Tube [mm] 105 112 128 140 155 176
FL Fork Length [mm] 385 385 385 385 385 385
R Reach [mm] 377 384 390 395 400 409
S Stack [mm] 517 529 542 557 571 593
WB Wheel Base [mm] 985 983 990 990 999 1010
SH Stand Over Height [mm] 746 771 792 810 826 853

Technologies of Merida Reacto 4000 Aero Road Bicycle

X-Taper Headtube:

Steering precision is vital to safe and confident handling, and the X-Taper Headtube allows us to significantly boost this precision. A larger headset diameter at the bottom paired with a smaller one at the top helps to deal with the strains modern riding and equipment can put on the headtube, all without adding unnecessary weight. It allows tapered forks to be fitted with ease and delivers precise and confidence-inspiring steering.

Internal Cable Routing:

On the majority of our frames, we run the gear and brake cables and hoses through the frame. The cables enter and exit the frame through smooth sockets, or we use one of our other systems like Smart Entry or Wire Port to be routed through. Running the cables inside the frame protects them from the elements, gives a clean and neat look and can offer aerodynamic advantages.

Nano Matrix Carbon:

Nano Matrix Carbon is a special kind of carbon fibre where we add extremely tiny, nano-scale particles to the resin that binds the individual carbon fibres together. These then work on a molecular level to protect them from damage. It’s so effective that it can actually increase the finished carbon fibre’s impact resistance by up to 40%, allowing us to build stronger and lighter composite frames that result in a faster and tougher bike.

AWS Anti Wrinkle System:

This is a method we use to manufacture our carbon fibre frames. First, the carbon fibre that makes up the frame is laid around special formers. We then use a bladder to compress the layers against the outside of the frame mould, giving a smooth and wrinkle-free internal finish, removing any voids in between the layers of carbon that can cause potential weak points, resulting in a stronger, lighter frame.

NACA Fastback Profile:

This is a special kind of tube shape that helps reduce aerodynamic drag while also helping to reduce weight. It’s based around a teardrop profile that was originally developed in the aeronautical industry, but the rearmost portion of the profile is cut short. This reduces the amount of material needed to make the tube, but air still flows around it just as well, giving all the aerodynamic benefits but at a lower weight.

Disc Cooler:

Used on our carbon fibre road and gravel bikes, Disc Cooler is a finned piece of forged aluminium that sits between the brake calliper and frame. The aluminium piece helps to draw heat from the braking system and radiates it away quickly. It reduces the temperatures by up to 35% and helps to keep your brakes working at their best for improved control and performance on long descents and under heavy braking.

Internal Clamp:

When every second counts, the smallest of details can make the difference between winning and losing, so we look at every aspect of our frames to make them as sleek as possible. By using a seat post clamping mechanism that secures the post with a wedge inside the frame itself, we minimise the turbulence and potential drag while keeping post height adjustment simple, giving a frame that is more aerodynamic and also better looking.

Wire Port:

Merida designed headsets that enable all control cables from the handlebar to enter the frame through the headset cover, creating a clean and uncluttered look, allowing for a lighter, stronger and more aerodynamic frame structure than with conventional cable ports. Depending on the model, the cables are run completely internally (including the bar and stem) or semi-integrated, where the cables enter the frame underneath the stem.

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