To improve your shopping experience today and in the future, this site uses cookies.
I Accept Cookies
The Merida Reacto Road Bike delivers exceptional value and performance, making it a top choice for cyclists who demand both speed and comfort.
The Merida Reacto Road Bike delivers exceptional value and performance, making it a top choice for cyclists who demand both speed and comfort.
Merida

2025 Merida Reacto 4000 Road Bike - Grey/Silver - Size Medium

Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined

2025 Merida Reacto 4000 Road Bike - Grey/Silver - Size Medium

Season:2025

Brand:Merida

Code:P-Q070

Merida Reacto Road Bike: Entry-Level Carbon Aero Bike with ProTour Geometry

Discover the Merida Reacto, an entry-level carbon aero bike designed with race-proven ProTour geometry. This bike combines cutting-edge aerodynamics with exceptional rider comfort, making it a standout choice for cyclists seeking performance and style.

CF3 Carbon Frame: The lightweight and aerodynamic CF3 carbon frame ensures both speed and durability, offering a perfect balance of performance and comfort.

Shimano 105 2x12 Speed Groupset: Provides reliable and precise shifting across a wide range of gears, ideal for various riding conditions.

Shimano 105 Hydraulic Disc Brakes: Equipped with powerful hydraulic disc brakes for consistent stopping power and enhanced control.

Continental Ultra Sport III 28c Tyres: These tyres offer excellent traction and comfort, complementing the bike's aerodynamic design.

Merida S-Flex Seat Post: Designed to absorb vibrations and enhance rider comfort.

Disc Cooler Technology: Integrated disc cooler technology reduces brake temperatures by up to 35%, ensuring optimal performance.

The 4th generation Reacto has been refined with numerous improvements to boost aerodynamic performance. It features wider tyres, enhanced cockpit cable integration, and aerodynamic optimisations guided by Computational Fluid Dynamics (CFD) and rigorous wind tunnel testing. The Reacto requires just 209 watts to reach 45 km/h, outperforming its predecessor and positioning it among the leading aero road bikes.

Attention to detail includes integrating the front disc cooler behind the fork, positioning the rear disc caliper in the rear triangle, and using new bolt-through axles to minimise drag. These upgrades result in an aero bike that excels in comfort, aerodynamic efficiency, and lightweight performance.

"Without doubt one of the most complete bikes available on the market." - Cycling Weekly

  • Frame: Aero Optimized CF3 Lightweight Carbon
  • Groupset: Shimano 105 24 Speed
  • Brakes: Shimano 105 Hydraulic Disc Brakes
  • Tyres: Continental Ultra Sport III 28c
  • Seat Post: Merida S-Flex
  • Technology: Disc Cooler

The Merida Reacto Road Bike delivers exceptional value and performance, making it a top choice for cyclists who demand both speed and comfort.

Technical Information
  • Frame
    CF3 IV - carbon with the same geometry and aeroydanmic profiling as the CF5 IV with a more budget friendly carbon lay up. Tapered headtube, Disc Cooler, BB86 BB standard,142 x12mm axle standard. Max tyre size 700 x 30c
  • Fork
    Reacto CF3 IV Disc; full carbon, tapered steerer. Max tyre size: 700 x 30c - Disc cooler technology
  • Gears
    24
  • Shifters
    Shimano 105 disc
  • Front Derailleur
    Shimano 105
  • Rear Derailleur
    Shimano 105; GS
  • Bottom Bracket
    SM-BB71-41B, Pressfit 86.5
  • Chain
    Shimano CN-M6100-12
  • Chainset
    Shimano 105; FCR7100, 52-36 tooth chainset; Crank length - 165mm (XXS), 170mm (XS), 172.5mm (S/M/L), 175mm (XL)
  • Cassette
    Shimano CS-R7101; 11-34 teeth; 12 speed
  • Brake Lever
    Shimano 105
  • Front Brake
    Shimano 105; Hydraulic disc brake caliper with Shimano RT54; 160mm rotor
  • Rear Brake
    Shimano 105; Hydraulic disc brake caliper with Shimano RT54; 160mm rotor
  • Grips
    Merida Expert
  • Handlebar
    Merida Expert CW; aluminium; 380mm (XXS-XS-S); 400mm (M-L-XL)
  • Stem
    Merida Expert SL 2PII; aluminium; -9 degree rise - Length - 90mm (XXS-XS), 100mm (S), 110mm (M-L), 120mm (XL)
  • Headset
    Merida Team SL (OP-203 neck)
  • Saddle
    Merida Expert SL; V-mount; including Merida minitool
  • Seatpost
    Merida Team CW; Aero shape; 15mm layback; Carbon
  • Wheel Size
    700c
  • Rims
    Merida Expert CW; 19mm inner rim width; 30mm rim depth
  • Spokes
    Double Butted Black stainless
  • Front Hub
    Shimano HB-TC500; 100 x 12mm; 28 spoke; Centerlock
  • Rear Hub
    Shimano FH-TC500-HL; 142 x 12mm; 28 spoke; Centerlock
  • Front Tyre
    Continental Ultra Sport III; 700 x 28C; Kevlar bead
  • Rear Tyre
    Continental Ultra Sport III; 700 x 28C; Kevlar bead
As with any product, specification is subject to change without prior notification. You are advised to confirm current specification before buying. Please note that this bike does not come with pedals.
Sizing Information

SIZING

Size in cm< 152cm148 - 157 cm153 - 162cm158 - 167cm163 - 172cm168 - 177cm173 - 182cm178 - 187cm> 183cm
Bike Size4XS3XSXXSXSSS/MM/LLXL

GEOMETRY

ReactoXXSXSSMLXL
Tyre Sizes28"28"28"28"28"28"
Seat Tubes470mm500mm520mm540mm560mm590mm
Top Tubes520mm536mm545mm560mm575mm590mm
Chainstays408mm408mm408mm408mm408mm408mm
Head Tube Angle70.5°72°72.5°73.5°73.5°74°
Seat Tube Angle74.5°74°74°73.5°73°73°
Bottom Bracket Drop70mm70mm66mm66mm66mm66mm
Head Tube Lengths105mm112mm128mm140mm155mm176mm
Fork Length385mm385mm385mm385mm385mm385mm
Reach377mm384mm390mm395mm400mm409mm
Stack517mm529mm542mm557mm571mm593mm
Standover Height746mm771mm792mm810mm826mm853mm
Wheelbase985mm983mm990mm990mm999mm1010mm
Professional Opinion
Home Road Cycling Bikes Merida Road Bikes