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Introducing the 2025 Merida Reacto 4000, the ultimate blend of value and performance for cyclists who want a high-quality carbon race bike without breaking the bank.
Introducing the 2025 Merida Reacto 4000, the ultimate blend of value and performance for cyclists who want a high-quality carbon race bike without breaking the bank.
Merida

2025 Merida Reacto 4000 Road Bike In Grey/Silver

£2,400.00
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

Hassle free returns

If you are not happy with any items purchased via our website, under Consumer Contracts Regulations you have the right to return any unused products for a refund or exchange within 30 days.

When the customer sends an item back to the company (or, when the company arranges for collecting from the customer), the company will process the returned item then notify the customer via email of the refund. The refund will be issued within 3 - 5 working days of the product being received by us, it may then take an additional 3 - 5 working days for the refund to be paid into the customers account.

For items returned within the cooling off period...

  • By law, customers have the right to withdraw from the purchase of an item within 14 working days of the date on which the item is delivered.
  • Where you are withdrawing from your purchase within the cooling-off period, and there has been no error on our part, we will refund the cost of the item.
  • The company will not refund the cost of delivery or other services provided to the customer in connection with the purchase.
  • The cost of delivery back to the company is the responsibility of the customer.
  • Where we collect an item from you, we reserve the right to recover the costs of collection from you.
TERMS AND CONDITIONS
  • Returned goods should be unused, in a saleable condition and in their original packaging with all labels still attached. The Endurance Hub is entitled to refuse the return or deduct from a refund as a result of the product not being in the above condition.
  • We are only able to exchange like for like products. If you require a different item, you will need to opt for a refund and place a new order. All returns must have a completed returns form.
  • We will refund you to your original payment method.
  • We make no charge for returns, there is no restocking fee.
  • Customised items cannot be returned. *
  • Please do not send your purchase back to the manufacturer unless you have been advised to.
  • The Endurance Hub customers have 30 days from date of delivery to return their orders.
  • Once we have received the returned goods we will refund you, by the method you used to pay for your order. This may take5-7 working days to appear as cleared funds.

*Faulty customised goods (or goods that have been altered in any way) will need to be returned for inspection as customisation may void your warranty and therefore faults may not be covered.

WARRANTY

All products ordered from The Endurance Hub come with a full warranty which covers manufacturing faults and defects in workmanship. If you feel that your purchase has developed a fault, please contact our store for an assessment. To do this you will need proof of purchase.

If taking your product in store is not an option then please email our team on info@theendurancehub.co.uk. Please include photographs of your product (please keep below 20mb), your web order number (or copy of receipt) so we can immediately start to assess the issue.

PLEASE NOTE:

In some cases, the manufacturer/supplier may require to see the item(s) before repair or replacement can take place. If this is the case, we will inform you and arrange how to do this. All used items being returned to us must be cleaned for hygiene purposes.

On receipt of your goods we will carry out a full inspection and contact you within three working days of receipt.

2025 Merida Reacto 4000 Road Bike In Grey/Silver

Season:2025

Brand:Merida

Code:P-Q070

Introducing the 2025 Merida Reacto 4000, the ultimate blend of value and performance for cyclists who want a high-quality carbon race bike without breaking the bank. This bike is more than just an entry-level racer—it’s a high-speed machine engineered for road racing, fast club rides, and tackling long distances with comfort and precision.

Key Highlights:

  • Lightweight CF3 Carbon Frame: At the heart of the Reacto 4000 is Merida's lightweight CF3 carbon frame (weighing approximately 1,150g in size M), designed with race-proven geometry to offer outstanding aerodynamics and agility. This bike is built to handle high-speed sprints and sharp corners with ease.

  • Unmatched Comfort: While this bike excels in speed, it doesn’t compromise on comfort. With generous tyre clearance for up to 30mm tyres and the S-FLEX carbon seat post, the Reacto 4000 smooths out rough roads, letting you ride in comfort on both cobblestones and potholed streets alike.

  • Shimano 105 12-Speed Groupset: The latest Shimano 105 12-speed mechanical groupset ensures precise, smooth shifting and reliable braking performance, giving you total control on every ride, whether you're racing or pushing your limits on a solo training session.

  • Aerodynamic Design: The Reacto 4000’s aero-focused frame has been praised by top cycling magazines for its outstanding aerodynamic performance. With sleek tube shapes, integrated cabling (thanks to WIRE PORT cable integration), and the MERIDA EXPERT CW handlebar combination, this bike slices through wind like a knife.

What the Press Says:

The Reacto series has taken the cycling world by storm with rave reviews and awards. Publications like Cycling Weekly call it “one of the most complete bikes on the market,” and Cycling Plus praises it as “hugely impressive.” Whether you're a criterium racer, sprinter, or road enthusiast, the Reacto 4000 offers speed, comfort, and performance at an unbeatable price.

Top-Notch Components:

  • MERIDA DISC COOLER Technology ensures optimal braking performance, while Shimano 105 hydraulic disc brakes deliver powerful, smooth stopping power.
  • Continental Ultra Sport III tyres provide excellent grip and speed, keeping you stable even during fast descents and sharp turns.
  • The seat post integrated rear light adds safety and visibility for those early morning or evening rides.

Ideal for:

If you're a rider who wants to break into road racing, or if you’re looking for an aero bike with pro-level features at a fraction of the cost, the 2025 Merida Reacto 4000 is your perfect companion. It's race-ready, versatile, and packed with features that make it a phenomenal choice for both competitive and ambitious road cyclists.

Whether you're competing in a criterium or enjoying a weekend ride with your local club, the Reacto 4000 delivers incredible speed, sharp handling, and all-day comfort. Are you ready to elevate your ride?

Technical Information
  • Model Year
    2025
  • Frame
    REACTO CF3 IV
  • Material (Frame)
    Carbon
  • Max Wheelsize
    700x30C
  • Axle Standard
    100x12/ 142x12mm
  • Bottom Bracket Standard
    BB86,5
  • Frame Sizes
    XXS, XS, S, M, L, XL
  • Fork
    REACTO CF3 IV DISC
  • Material (Fork)
    Carbon
  • Rim
    MERIDA EXPERT CW
  • Inner Width (Rim)
    19mm
  • Height (Rim)
    30mm
  • Material (Rim)
    Aluminium
  • Tubeless Ready
    Yes (tubeless tape and valves not included)
  • Hubs
    Shimano HB-TC500 / Shimano HB-TC500-HL
  • Front Hub Width
    100x12mm
  • Front Hub Spoke Holes
    28
  • Front Hub Lock Type
    Centerlock
  • Rear Hub Width
    12-142mm
  • Rear Hub Spoke Holes
    28
  • Rear Hub Lock Type
    Centerlock
  • Front Tyre
    Continental Ultra Sport III
  • Front Tyre Size
    700x28C
  • Front Tyre Type
    Fold
  • Rear Tyre
    Continental Ultra Sport III
  • Rear Tyre Size
    700x28C
  • Rear Tyre Type
    Fold
  • Hubs
    MERIDA EXPERT SL
  • Hubs Features
    Including removable lever, 6/4mm allen key
  • Crank
    Shimano 105
  • Crank Teeth
    52-36
  • Crank Length
    165 mm-XXS, 170 mm-XS, 172.5 mm-S/M/L, 175 mm-XL
  • Bottom Bracket
    Shimano SM-BB72-41B
  • Bottom Bracket Type
    Pressfit 86.5
  • Cassette
    Shimano 105 R7101
  • Cassette Teeth
    11-34
  • Cassette Speed
    12 speed
  • Chain
    Shimano M6100-12
  • Shifters
    Shimano 105 disc
  • Front Derailleur
    Shimano 105
  • Rear Derailleur
    Shimano 105 GS
  • Brake Lever
    Shimano 105
  • Brakes
    Shimano 105 Hydraulic disc
  • Rotors
    Shimano RT54
  • Rotor Size
    160mm
  • Headset
    MERIDA TEAM SL
  • Headset Model
    VP-MRBHB (OP203 neck)
  • Stem
    MERIDA EXPERT SL 2PII
  • Stem Material
    Aluminium
  • Stem Angle
    -9°
  • Stem Size
    90 mm-XXS/XS, 100 mm-S, 110 mm-M/L, 120 mm-XL
  • Handlebar
    MERIDA EXPERT CW
  • Handlebar Material
    Aluminium
  • Handlebar Size
    380mm (XXS-XS), 400mm (M-L-XL)
  • Grip
    MERIDA ROAD Expert
  • Seat Post
    MERIDA TEAM CW
  • Seat Post Shape
    Aero shape
  • Seat Post Setback
    15mm
  • Seat Post Material
    Carbon
  • Seat Clamp
    MERIDA REACTO Aero
  • Saddle
    MERIDA EXPERT SL
  • Saddle Material
    6% recycled and 23% nature material
  • Saddle Features
    V-mount, incl. MERIDA minitool
Sizing Information

Geometries

Bike Frame Geometry Image
Frame SizeXXSXSSMLXL
Tyre Sizes28"28"28"28"28"28"
St Seat Tubes mm470500520540560590
Tt Top Tubes mm520536545560575590
Cs Chain Stays mm408408408408408408
HTA head tube angle [°]70.57272.573.573.574
STA seat tube angle [°]74.5747473.57373
Bd Bottom Bracket Drops mm707066666666
Ht Head Tube Lengths mm105112128140155176
Fl Fork Lengths mm385385385385385385
R Reach mm377384390395400409
S Stacks mm517529542557571593
Wb Wheel Base mm9859839909909991010
Sh Stand Over Height mm746771792810826853
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