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2020 Merida

REACTO 4000

A carbon frame aero bike with upper mid-range components and shimano 105 rim brakes.

Weight8.5 kg  
FrameCarbon
ForkCarbon
Wheels700c Aluminum
Drivetrain2 × 11
Groupset105
BrakesShimano 105 Rim
Where to Buy
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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

Similar Bikes

Highest gear

(descending)

Sizing
XXS

< 162cm

XS

158cm – 167cm

SM

163cm – 172cm

SM/MD

168cm – 177cm

MD/LG

173cm – 182cm

LG

178cm – 187cm

XL

183cm +

Rider Fit Notes

None yet.

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Reviews

Summary

The Merida Reacto is celebrated for its exceptional speed, razor-sharp handling, and surprising comfort, making it a standout in the aero bike category. It boasts a refined, integrated frame design that enhances aerodynamics and efficiency, supported by high-quality componentry. While it excels in performance and value, some reviews note minor issues with comfort and component reliability.

Pros
  • Translates every watt into forward momentum

  • Razor sharp handling

  • Impressive comfort for an aero bike

  • Completely integrated and much refined frame

  • Improved aero claims with the new Reacto

Cons
  • Seat clamp rubber cap keeps sliding up the seatpost

  • Rear light ran out pretty quickly

  • Front wheel depth can catch the wind

  • Doesn't come with tubeless tyres as standard

  • The rear light is far from reliable

Key Quotes
The sheer unadulterated speed and responsiveness of the machine is intoxicating
Cycling Weekly logoCycling Weekly
Drop into a descent, attack the flats or turn into a headwind and the efficiencies of Merida’s tube shapes become clearly apparent.
Cycling News logoCycling News
The Merida Reacto 6000 is a fast aero road bike with impressively confident handling characteristics. It’s great value, too.
BikeRadar logoBikeRadar

Feedback?

View all reviews

BikeRadar
Merida Reacto 4000 review

Aug 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

Cyclist
Merida Reacto 2021: The aero bike that Mark Cavendish will be riding this year

Jul 2020 · James Spender

Wider tyre clearance and integrated cables headlined Merida's new Reacto aero bike

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

road.cc
Merida Reacto Disc 4000

Jun 2019 · Stu Kerton

A fast machine with sorted geometry, but its firm ride won't appeal to all

Read Review

Geometry
Specs
Build
Frame

REACTO CF2, material: carbon, 700C wheelsize, 100x9/ 130x9mm axle standard, BB386-PF30 bottom bracket standard

BB StandardBB30, Press Fit

Fork

MERIDA REACTO CF2

Bottom Bracket

FSA 386-BB30 PF6000 [SMN FC]

Headset

MERIDA REACTO neck

Handlebar

MERIDA EXPERT CW, material: aluminium

Saddle

MERIDA EXPERT CC

Seatpost

MERIDA EXPERT CW, material: carbon, Aero shape, 15mm setback

TypeRigid

Groupset
Rear Derailleur

Shimano 105, GS

Front Derailleur

Shimano 105

Crank

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

Shifters

Shimano 105

Cassette

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

Chain

KMC X11

Brakes

Shimano 105-direct

TypeShimano 105 Rim

Brake Levers

Shimano 105

Wheels
Rims

MERIDA EXPERT CW, 17mm inner width, 35mm height

Spokes

Double Butted Black stainless

Front Hub

Road seal bearing, 100x9mm width front hub, 24 spoke holes

Rear Hub

Road seal bearing, 130x9mm width rear hub, 28 spoke holes

Tires

Continental Ultra Sport II, 700x25C, fold

Rider Notes
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First added 6 September

Last updated 3 July

Not listed for 2,156 days