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2023 Merida

REACTO 4000

A carbon frame aero bike with upper mid-range components and shimano 105 hydraulic disc brakes.
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Manufacturer Price

2400 GBP(2768 €)
FrameCarbon
ForkCarbon
Wheels700c Aluminum
Drivetrain2 × 11
Groupset105
BrakesShimano 105 Hydraulic Disc
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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

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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

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Sizing
SM

158cm – 171cm

MD

168cm – 180cm

LG

178cm – 189cm

XL

186cm – 199cm

🐐 Estimated

Rider Fit Notes

None yet.

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Reviews

Summary

The Merida Reacto is a highly regarded aero road bike that combines improved aerodynamics with comfort and versatility, making it suitable for race day and beyond. It features a clean, integrated cockpit, revised fork profiling, and a more comfortable ride thanks to updated carbon layup and an S-Flex seatpost. Reviews highlight its speed, efficient handling, and the ability to fit wider tires for added comfort.

Pros
  • Improved aerodynamics

  • More comfortable with revised carbon layup and S-Flex seatpost

  • Bigger tire clearance for added comfort and control

  • Clean, integrated cockpit solution

  • Wind tunnel-proven drag reduction

Cons
  • CF5 frames only include internal routing for electronic shifting

  • New wider fork is heavier

  • Front end susceptible to crosswinds

  • Not the most light-footed on very steep climbs

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 offers a superbike-adjacent experience on a rather more real-world budget.
Cyclist logoCyclist
An aerodynamic jack of all trades!
Gran Fondo Magazine logoGran Fondo Magazine
Real-world aero benefits, a great ride quality and a respectable price
road.cc logoroad.cc

Feedback?

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road.cc
Merida Reacto 7000

ago 2023 · Stu Kerton

Real-world aero benefits, a great ride quality and a respectable price

Highs
  • Effective 'aeroness' in the real world

  • Efficient gear ratios

  • Impressive tyres fitted as standard

Lows
  • Not the lightest build for the money

Read Review

Cyclist
Merida Reacto 4000 review

ene 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

ago 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

Cycling Weekly
Merida Reacto Team-E

sept 2020 · James Bracey

Does the newly launched 4th edition improve on the existing aero focussed race bike?

Highs
  • Translates every watt into forward momentum

  • Razor sharp handling

  • Impressive comfort for an aero bike

Lows
  • Seat clamp rubber cap keeps sliding up the seatpost

Read Review

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

jul 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?

jul 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

Cycling News
Merida Reacto LTD review

mar 2020 · Graham Cottingham

One month into our longterm test and the Merida Reacto LTD road bike is already impressing us

Highs
  • Effortless straight-line speed

  • Scything high-speed cornering capabilities

  • Dampening when dealing with large impacts

Lows
  • Doesn't come with tubeless tyres as standard

  • The rear light is far from reliable

Read Review

Geometry
Specs
Build
Frame

REACTO CF3 IV, material: carbon, 700x30C max. wheelsize, 100x12/ 142x12mm 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

SM-BB71-41B, Pressfit 86.5

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, 380mm (XXS), 400mm (XS-S), 420mm (M), 440 (L-XL)

Saddle

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

Seatpost

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

TypeRigid

Groupset
Rear Derailleur

Shimano 105, GS

Front Derailleur

Shimano 105

Crank

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

Shifters

Shimano 105 Disc

Cassette

Shimano CS-R7000, 11-30 teeth, 11 speed

Chain

KMC X11

Brakes

Shimano 105, Hydraulic Disc

TypeShimano 105 Hydraulic Disc

Brake Levers

Shimano 105

Wheels
Rims

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

Spokes

Double Butted Black stainless

Front Hub

VP CLK170F / VP 270SB, 100x12mm width front hub, 28 spoke holes, Centerlock, 12-142mm width rear hub, 28 spoke holes, Centerlock

Rear Hub

VP CLK170F / VP 270SB, 100x12mm width front hub, 28 spoke holes, Centerlock, 12-142mm width rear hub, 28 spoke holes, Centerlock

Tires

Front: Continental Ultra Sport III, 700x25C, fold, Rear: Continental Ultra Sport III, 700x25C, fold

Disc Rotors

Shimano RT54, 160mm

Accessories
Lights

REACTO light seat post + Battery

Rider Notes
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First added 4 de junio

Last updated 18 de mayo

Not listed for 741 days