Bikes up to 60% offWe monitor over 40,000 bikes daily to find the best prices

Today’s Deals

2024 Merida

REACTO 4000

A carbon frame aero bike with upper mid-range components and shimano 105 hydraulic disc brakes.
Compare the full range

Manufacturer Price

2 400 £GB(2 768 €)
Weight8,7 kg  
FrameCarbon
ForkCarbon
Wheels700c Aluminum
Drivetrain2 × 12
Groupset105
BrakesShimano 105 Hydraulic Disc
Where to Buy
Similar Bikes
Top Comparison
Insights
Ride Feel

Based on frame geometry and build specs.

Rider Position
relaxedaggressive
Terrain
smoothrugged
REACTO 4000
Other Aero bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

66 km/h

REACTO 4000

64 km/h

Similar Bikes

Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Compare the full REACTO model range

View Comparison
Reviews

Summary

The Merida Reacto is a highly praised aero road bike, celebrated for its improved aerodynamics, comfort, and versatility. It offers a superbike-like ride with a clean cockpit and ultra-modern design, making it a strong contender in its category. While it excels in performance and design, some reviews note the need for better wheels and tyres to fully unleash its potential.

Pros
  • Improved aerodynamics

  • More compliance

  • Superbike-like ride

  • Ultra-modern design

  • Clean cockpit

Cons
  • Better wheels and tyres would really let it shine

  • Relatively heavy

  • Basic wheels

Key Quotes
Merida’s Reacto aero road bike enters its fourth generation with an all-new carbon frame that through subtle updates is more versatile than ever while still improving on aerodynamics.
Bikerumor logoBikerumor
The Reacto 4000 does a more than passable imitation of a superbike.
BikeRadar logoBikeRadar
An aerodynamic jack of all trades!
Gran Fondo Magazine logoGran Fondo Magazine

Feedback?

View all reviews

road.cc
Merida Reacto 9000

août 2025

Five years on, the Reacto is still a fast and planted aero road bike that is able to compete with the best in the category

Highs
  • Good specification

  • Sharp handling

  • Stiff bottom bracket

  • Stealthy appearance

  • Balanced geometry for an aero bike

Lows
  • No power meter

  • 30mm tyre clearance is dated

  • New model imminent

Read Review

Cyclist
Merida Reacto 4000 review

janv. 2022 · Matthew Loveridge

Merida's most affordable aero bike retains the pro machine's best qualities

Highs
  • Exciting

  • Racy ride

  • Comfortable

  • Super-clean design

Lows
  • Basic wheels

  • Non-tubeless tyres

Read Review

BikeRadar
Merida Reacto 4000 review

août 2021 · Matthew Loveridge

The Reacto is a star performer on the road and it’s good enough to justify big upgrades down the line

Highs
  • Superbike-like ride

  • Ultra-modern design

  • Clean cockpit

Lows
  • Better wheels and tyres would really let it shine

Read Review

Bikerumor
2021 Merida Reacto aero road bike is faster, more comfortable & more versatile, ready for any race!

juil. 2020 · Cory Benson

Merida's Reacto aero road bike enters gen 4 with an all-new lightweight carbon frameset that is faster than ever, while adding even more versatility...

Read Review

Gran Fondo Magazine
2021 MERIDA REACTO in review – An aerodynamic jack of all trades?

juil. 2020 · By

The brand new 2021 MERIDA REACTO in review. Aerodynamic optimisation, ample tire clearance and comfort!

Highs
  • Very composed

  • Good vibration damping

  • All-round abilities

  • Cable routing and level of integration

Lows
  • Front end susceptible to crosswinds

Read Review

Geometry
Specs
Build
Frame

REACTO CF3 IV, material: carbon, 700x30C max. wheelsize, 100x12/ 142x12 mm axle standard, BB86,5 bottom bracket standard

BB StandardBB86/BB92, 86.5mm, Press Fit

Tire Clearance30c

Fork

REACTO CF3 IV disc, material: carbon, 700x30C max. wheelsize

Bottom Bracket

Shimano SM-BB71-41B, Pressfit 86.5 mm

Headset

FSA ACR

Stem

FSA SMR ACR, material: aluminium, -6° stem angle, 90 mm-XXS/XS, 100 mm-S, 110 mm-M, 120 mm-L/XL

Handlebar

MERIDA EXPERT CW, material: aluminium, 380 mm (XXS), 400 mm (XS), 420 mm (S/M/L), 440 (XL)

Saddle

MERIDA EXPERT SL, V-mount, incl. MERIDA minitool

Seatpost

MERIDA TEAM CW, Aero shape, 15 mm setback, material: Carbon

TypeRigid

Groupset
Rear Derailleur

Shimano 105, GS

Front Derailleur

Shimano 105

Crank

Shimano 105, 52-36 teeth, 165 mm-XXS, 170 mm-XS, 172.5 mm-S/M, 175 mm-L/XL

Shifters

Shimano 105 disc

Cassette

Shimano CS-R7100, 11-34 teeth, 12 speed

Chain

Shimano CN-M6100-12

Brakes

Shimano 105, Hydraulic disc

TypeShimano 105 Hydraulic Disc

Brake Levers

Shimano 105

Wheels
Rims

MERIDA EXPERT CW, 19 mm inner width, 30 mm height, material: aluminium, Tubeless ready (tubeless tape and valves not included)

Spokes

Double Butted Black stainless

Front Hub

VP CLK170F / VP 270SB, 100x12 mm width front hub, 28 spoke holes, Centerlock, 12-142 mm width rear hub, 28 spoke holes, Centerlock

Rear Hub

VP CLK170F / VP 270SB, 100x12 mm width front hub, 28 spoke holes, Centerlock, 12-142 mm width rear hub, 28 spoke holes, Centerlock

Tires

Front: Maxxis Highroad, 700x25C, fold *tubeless ready, Rear: Maxxis Highroad, 700x25C, fold *tubeless ready

Disc Rotors

Shimano RT54, 160 mm

Accessories
Lights

REACTO light seat post USB

Rider Notes
Riders Also Viewed

First added 14 octobre

Last updated 2 août

Not listed for 300 days