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Finance£2399
2399
.9959
The Reacto 4000 combines aerodynamic efficiency with everyday rider comfort. A CF3 carbon frame, Shimano 105 12-speed groupset, and powerful hydraulic disc brakes make it a fast, well-balanced aero bike for racing or spirited rides.
Key Features
CF3 IV carbon aero frame with race-proven geometry, Disc Cooler technology
Reacto CF3 IV Disc full carbon fork
Shimano 105 12-speed drivetrain with 52/36T chainset, 11–34T cassette
Shimano 105 hydraulic disc brakes, 160mm rotors
Merida Expert CW wheels with Continental Grand Prix 28mm tyres
Integrated carbon seatpost with aero shaping
Internal cable routing and clean aero design details
Available with 0% APR finance
The Merida Reacto 4000 is designed to deliver speed, control, and efficiency, making it an excellent choice for riders entering road racing or wanting a high-performing aero bike. Built around a CF3 carbon frame, it shares the same aerodynamic shaping and geometry as Merida’s top-tier CF5, but with a more accessible carbon lay-up. The result is a frame that is both lightweight and stiff, with race-focused handling and aero features developed using Computational Fluid Dynamics (CFD) for real-world performance.
Comfort has been carefully built in. The Reacto 4000 accommodates up to 30mm tyres and comes equipped with Continental Grand Prix 28mm tyres, balancing speed with extra cushioning for longer rides. Merida’s Disc Cooler technology reduces brake temperatures by up to 35%, ensuring consistent braking power on long descents. The clean integration of the calipers within the frame further reduces drag while improving aesthetics.
The groupset is a full Shimano 105 R7100 12-speed system, offering precise and dependable shifting. A semi-compact 52/36T chainset paired with an 11–34T cassette gives you the range for flat-out efforts as well as hilly routes. Braking is handled by Shimano 105 hydraulic disc brakes with 160mm rotors, delivering controlled stopping power in all conditions.
Rolling on Merida Expert CW wheels with a 30mm depth, the Reacto 4000 strikes a balance between aero gains and stability in crosswinds. The wheels are fitted with Continental Grand Prix tyres for reliable grip and low rolling resistance. Merida’s aero-shaped Team CW carbon seatpost further complements the bike’s aerodynamic focus, while the inclusion of a Merida minitool adds practical utility.
Whether you’re pinning on a number for your first race, pushing the pace on club rides, or chasing your personal bests, the Reacto 4000 brings WorldTour-inspired aero technology into a package that’s both accessible and versatile. It’s a bike that proves you don’t need to compromise between speed, comfort, and control.
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Specification| Availability | In stock |
|---|---|
| BIKE year | 2026 |
| Category | Road Bike |
| Colour | Silk Black (Glossy Dark Silver) |
| Condition | Brand new |
| 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 Bars Merida Expert CW; material: aluminium; (XXXS-S) - 380mm wide, (M-L) - 400mm wide, XL - 420mm wide Front Brake Shimano 105; Hydraulic disc with Shimano RT54; 160mm Rear Brake Shimano 105; Hydraulic disc with Shimano RT54; 160mm Brake Lever Shimano 105 Front Mech Shimano 105 Rear Mech Shimano 105; GS Shifters Front: Shimano 105 disc, Rear: Shimano 105 disc Speed 24 Rims Merida Expert CW; 19mm inner rim width; 30mm rim depth Front Hub Shimano HB-TC500; 100x12mm; 28 Spoke; Centerlock Rear Hub Shimano FH-TC500-HL; 12-142mm; 28 Spoke; Centerlock Spokes Double Butted Black stainless Front Tyre Continental Grand Prix; 700x28C; kevlar bead Rear Tyre Continental Grand Prix; 700x28C; kevlar bead Seat Post Merida Team CW; Aero shape; 15mm layback; material: carbon Saddle Merida Expert SL; 6% recycled and 23% nature material; V-mount; incl. Merida minitool 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 Chain Shimano M6100-12 Cassette Shimano 105 R7101; 11-34 teeth; 12 speed Pedals Not Included | |
| MPN | A62611A00163 |
| PNUM | 21263 |
| PRICE | £2399.99 |
| Available now | |
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Call 029 2052 9955 or email us and this bike could be yours today!
Size guide| RIDER HEIGHT | FRAME SIZE SUGGESTED | ||
|---|---|---|---|
| (ft - in) | (cm) | Size | (cm) |
| 4' 10" - 5' 0" | 148 - 152 | XXS | 47 - 48 |
| 5' 0" - 5' 3" | 152 - 160 | XS | 49 - 50 |
| 5' 3" - 5' 6" | 160 - 168 | S | 51 - 52 - 53 |
| 5' 6" - 5' 9" | 168 - 175 | M | 54 - 55 |
| 5' 9" - 6' 0" | 175 - 183 | L | 56 - 57 - 58 |
| 6' 0" - 6' 3" | 183 - 191 | XL | 58 - 59 - 60 |
| 6' 3" - 6' 6" | 191 - 198 | XXL | 61 - 62 - 63 |
Due to the size and weight of most bikes, a charge would apply to shipping remote regions, offshore UK and Ireland.
The courier will require a signature for your delivery. If no one is available to sign for your goods, the courier will leave a card with instruction of where you can collect it.
Working days are Monday to Friday unless otherwise stated. There may be circumstances beyond our control which cause delay and in such circumstances we will endeavour to deliver the goods as soon as they arrive from manufacturers.
To view our Shipping & Returns Policy, click here.
Our flexible finance options mean you can purchase this product with a minimal deposit (or call us and arrange a deposit that suits you). Before applying for finance, please ensure you have read the information on eligability.
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