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27 Merida Reacto 4000 - Black/Gunmetal Grey
27 Merida Reacto 10K Aero Road Bike - Grey/Black/Silver
27 Merida Reacto 4000 - Black/Gunmetal Grey
27 Merida Reacto 10K Aero Road Bike - Grey/Black/Silver
21% off

27 Merida Reacto 4000 - Black/Gunmetal Grey

#MERE2700109
$3,799.00 $2,969.01
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PROFESSIONAL BUILD
Every Click and Collect bike will be fully assembled and safety-checked by a qualified Jonny Sprockets mechanic before you collect it. We check key bolts, gears, brakes, tyre pressure, headset, wheels and general setup, so your new bike is ready to roll properly from day one.
COVERED BY MERIDA'S WARRANTY
Ride with confidence knowing this product is backed by Merida's manufacturer warranty. If there's a defect in materials or workmanship, we'll help guide you through the warranty process and work with the supplier to get it sorted as quickly as possible. Warranty terms vary by brand and product type, but you're not on your own if something genuine goes wrong. See warranty details →

All The Deets

Description

The REACTO 4000 delivers genuine aero performance without the premium price tag. Built on a race-proven CF3 carbon frame with proven geometry, it balances speed with practicality — accommodating up to 30 mm tyres and fitted with an S-FLEX carbon seat post for all-day comfort on long rides and club events.

Equipped with Shimano's 12-speed 105 mechanical groupset, shifting remains crisp and reliable whether you're sprinting or climbing. Whether you're stepping into competitive racing or pushing harder on weekend rides, the 4000 gives you the aerodynamic edge without compromise.

The cycling press has consistently praised the REACTO platform for its completeness — sharp handling, quick acceleration, and outstanding aerodynamic efficiency make it equally at home in criterium races or grinding out miles on rough road surfaces. It's the ideal first aero bike for racers and ambitious riders ready to go faster.

Key Specifications
  • Frame: Merida REACTO CF3 V Carbon Aero Road
  • Fork: Merida REACTO CF3 V DISC Carbon
  • Drivetrain: Shimano 105 Mechanical, 2x12-Speed
  • Gearing: 52/36T Chainrings / 11-34T Cassette
  • Crankset: Shimano 105 R7100
  • Brakes: Shimano 105 Hydraulic Disc
  • Rotors: Shimano RT54, 160mm Front / 160mm Rear
  • Rims: Merida EXPERT CW Aluminium, 30mm Deep
  • Tyres: Continental Grand Prix, 700x28C, Folding
  • Handlebar: Merida EXPERT CW Aluminium
  • Stem: Merida EXPERT SL 2PII Aluminium
  • Seatpost: Merida REACTO V S-FLEX Aero Carbon, Zero Offset
  • Saddle: Prologo Akero RS PAS T2.0
  • Maximum Tyre Clearance: 700x32C
  • Bottom Bracket: Shimano SM-BB71-41B, PressFit BB86.5

 
Spec
Frame & Fork
  • Frame: Merida REACTO CF3 V Carbon
  • Frame Design: Aerodynamic Road Platform
  • Fork: Merida REACTO CF3 V DISC Carbon
  • Maximum Tyre Clearance: 700x32C
  • Front Axle Standard: 12x100mm Thru-Axle
  • Rear Axle Standard: 12x142mm Thru-Axle
  • Bottom Bracket Standard: BB86.5 PressFit
  • Headset: Merida TEAM SL, RCT-608 Cone Spacer
Drivetrain
  • Crankset: Shimano 105 R7100, 52/36T
  • Front Derailleur: Shimano 105, 12-Speed Mechanical
  • Rear Derailleur: Shimano 105, 12-Speed Mechanical
  • Shifters: Shimano 105 Mechanical, Hydraulic Disc
  • Cassette: Shimano 105 R7101, 11-34T, 12-Speed
  • Chain: Shimano CN-M6100, 12-Speed
  • Bottom Bracket: Shimano SM-BB71-41B, PressFit BB86.5
  • Gearing: 2x12-Speed Mechanical
Brakes
  • Front Brake: Shimano 105 Hydraulic Disc
  • Rear Brake: Shimano 105 Hydraulic Disc
  • Brake/Shift Levers: Shimano 105 Mechanical Shift / Hydraulic Disc
  • Front Rotor: Shimano RT54, 160mm
  • Rear Rotor: Shimano RT54, 160mm
Cockpit
  • Handlebar: Merida EXPERT CW Aluminium
  • Stem: Merida EXPERT SL 2PII Aluminium
  • Stem Angle: -9°
  • Handlebar Width - 3S: 380mm
  • Handlebar Width - XXS: 380mm
  • Handlebar Width - XS: 380mm
  • Handlebar Width - S: 380mm
  • Handlebar Width - M: 400mm
  • Handlebar Width - L: 400mm
  • Handlebar Width - XL: 420mm
  • Bar Tape: Merida ROAD EXPERT
  • Headset: Merida TEAM SL
  • Headset Cone Spacer: RCT-608
Seating
  • Saddle: Prologo Akero RS PAS T2.0
  • Seatpost: Merida REACTO V S-FLEX Aero Carbon
  • Seatpost Profile: Aerodynamic
  • Seatpost Offset: 0mm
Wheels & Tyres
  • Wheel Size: 700C
  • Rims: Merida EXPERT CW Aluminium
  • Rim Material: Aluminium
  • Rim Depth: 30mm
  • Internal Rim Width: 19mm
  • Front Axle Standard: 12x100mm Thru-Axle
  • Rear Axle Standard: 12x142mm Thru-Axle
  • Tubeless Compatibility: Not Specified
  • Front Tyre: Continental Grand Prix, 700x28C, Folding
  • Rear Tyre: Continental Grand Prix, 700x28C, Folding
  • Maximum Tyre Clearance: 700x32C
Accessories
  • Multitool: Merida Mini Tool, Included with Saddle
Delivery & Shipping
  • Calculated at checkout
  • We ship daily, orders before 1pm often leave the same day.
  • Free shipping over $200 (excludes bulky items, such as- bikes, wheels, forks etc.)
  • Express options available on smaller items
10,000+

Bikes sold

Millions of Miles Ridden

#1

Expert advice

From our experienced team

LOCALS

SINCE 2012

Australian operated

20,000+

Bikes Repaired

and serviced

400+ GOOGLE REVIEWS

CUSTOMERS ARE STOKED

4.9 star rating

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