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The Reacto has always been a class leading aero bike, combining state of the art aerodynamics with rider comfort. Its latest generation incorporated wider tyres for increased comfort.
The Reacto has always been a class leading aero bike, combining state of the art aerodynamics with rider comfort. Its latest generation incorporated wider tyres for increased comfort.
Merida

Merida Reacto 4000 Road Bike In Silk Black/Glossy Dark Silver

£1,900.00 £2,400.00 21% off
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

Merida Reacto 4000 Road Bike In Silk Black/Glossy Dark Silver

Season:2026

Brand:Merida

Code:P-R204

The Reacto has always been a class leading aero bike, combining state of the art aerodynamics with rider comfort.

The latest generation incorporated wider tyres for increased comfort, but adding wider tyres resulted in aerodynamic compromises, so a myriad of small improvements were required to over-compensate.

In the World Tour, no area can be ignored. Computational Fluid Dynamics (CFD) was used to model virtual wind tunnel performance, guiding the changes which offered the most aerodynamic benefit.

Tiny details like integrating the front Disc Cooler behind the fork and the rear disc caliper in the rear triangle, and creating new bolt-through axles with the thread integrated into the fork dropout, minimise drag and improve aerodynamic performance.

The Reacto CF5 needs just 209 watts effort for 45 km/h speed.

All Reacto models have powerful hydraulic disc brakes with chainstay-mounted calipers for better brake force dissipation. The flat mount standard keeps everything neat whilst sitting calipers on CNC'd aluminium Disc Cooler fins helps reduce operating temperatures by up to 35%.

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; material: carbon; 700x30C max. tyre size
  • Headset
    Merida Team SL (OP-203 neck)
  • Stem
    Merida Expert SL 2PII; material: aluminium; -9 degree rise; Length: (XXXS-XS) - 90mm, S - 100mm, (M-L) - 110mm, XL - 120mm
  • Handlebar
    Merida Expert CW; material: aluminium; (XXXS-S) - 380mm wide, (M-L) - 400mm wide, XL - 420mm wide
  • Grip
    Merida Road Expert
  • Brake Type
    Hydraulic Disc
  • Brake Lever
    Shimano 105
  • Brake Calipers
    Front: Shimano 105; Hydraulic disc with Shimano RT54; 160mm Rear: Shimano 105; Hydraulic disc with Shimano RT54; 160mm
  • Tyres
    Front: Continental Grand Prix; 700x28C; kevlar bead Rear: Continental Grand Prix; 700x28C; kevlar bead
  • Wheel Size
    700c
  • Wheels
    Rims: Merida Expert CW; 19mm inner rim width; 30mm rim depth Spokes: Double Butted Black stainless Front Hub: Shimano HB-TC500; 100x12mm; 28 Spoke; Centerlock Rear Hub: Shimano FH-TC500-HL; 12-142mm; 28 Spoke; Centerlock
  • Speeds
    24
  • Front Derailleur
    Shimano 105
  • Rear Derailleur
    Shimano 105; GS
  • Shift Levers
    Front: Shimano 105 disc, Rear: Shimano 105 disc
  • Chain
    Shimano M6100-12
  • Cassette
    Shimano 105 R7101; 11-34 teeth; 12 speed
  • Chainset
    Shimano 105 R7100; 52-36 tooth chainset; Crank length: XXXS - 160mm, (XXS-XS) - 165mm, (S-M) - 170mm, (L-XL) - 172.5mm
  • Bottom Bracket
    Shimano SM-BB71-41B; Pressfit 86.5
  • Pedals
    Not included
  • Saddle
    Merida Expert SL; 6% recycled and 23% nature material; V-mount; incl. Merida minitool
  • Seat Post
    Merida Team CW; Aero shape; 15mm layback; material: carbon
Sizing Information
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