Reacto 4000
OverviewAbout the Merida Reacto 4000
The Merida Reacto 4000 is a road bike, listed at $3,199. A drop-bar bike built for sealed roads, speed and distance.
SizingWhat size Reacto 4000 do I need?
Enter your height to see the size Merida recommends.
| Size | Rider height | In feet |
|---|---|---|
| 4XS | under 152 cm | under 5 ft 0 in |
| 3XS | 148 to 157 cm | 4 ft 10 in to 5 ft 2 in |
| XXS | 153 to 162 cm | 5 ft 0 in to 5 ft 4 in |
| XS | 158 to 167 cm | 5 ft 2 in to 5 ft 6 in |
| S | 163 to 172 cm | 5 ft 4 in to 5 ft 8 in |
| S/M | 168 to 177 cm | 5 ft 6 in to 5 ft 10 in |
| M/L | 173 to 182 cm | 5 ft 8 in to 6 ft 0 in |
| L | 178 to 187 cm | 5 ft 10 in to 6 ft 2 in |
| XL | 183 cm and over | 6 ft 0 in and over |
Rider heights from Merida's size chart (the brand chart for this model family). Height is a starting point: arm and leg length, flexibility and riding style all matter, so a test ride beats any chart. How bike sizing works.
SpecificationsWhat we know
- Brand
- Merida
- Model year
- 2026
- Category
- Road
- Wheel size
- 700c
- Frame sizes
- 4XS, 3XS, XXS, XS, S, S/M, M/L, L, XL
- Price
- $3,199, RRP AUD (99 Bikes)
Specs and pricing are listed in AUD and sourced from Australian retail listings. Confirm the current details and availability with the seller before purchase.
GeometrySize M
- Stack
- 557 mm
- Reach
- 395 mm
- Stack/reach
- 1.41
- Head angle
- 73.5 deg
- Seat angle
- 73.5 deg
- Wheelbase
- 992 mm
- Chainstay
- 410 mm
- BB drop
- 66 mm
- Standover
- 810 mm
- Fork rake
- 45 mm
GearingRatios
Ratios are derived from the chainrings and cassette. They describe the gearing, not any rider's ability.
Drivetrain & buildFull specification
- Groupset
- Shimano 105
- Shifting
- Mechanical
- Drive
- 2x
- Speeds
- 12
- Crank
- Shimano 105 R7100
- Chainrings
- 52/36
- Cassette
- Shimano 105 R7101
- Rear derailleur
- Shimano 105
- Brakes
- Shimano 105 hydraulic disc
- Rotors
- 160mm
- Wheelset
- Merida Expert CW rims, Shimano hubs
- Stock tyre
- 700x28c
- Max tyre clearance
- 32 mm
- Fork material
- carbon
- BB standard
- Shimano SM-BB71
- Seatpost
- Merida Reacto S-FLEX carbon aero
- Cockpit
- Merida Expert CW bar, Expert SL stem
- Saddle
- Prologo Akero RS PAS
Bike DNAWhat the numbers say
- Position
- Stack-to-reach 1.41 gives a long and low, racier riding position.
- Steering
- A 73.5 deg head angle points to quick, responsive steering.
- Climbing
- Lowest ratio 1.06 is endurance-friendly gearing.
Derived from the published geometry and gearing above. It describes the numbers, not a ride test.
BikeFinder Data Profile: geometry and specification researched from published sources (merida-bikes.com + backfill 2026-09-27: merida-bikes.com), verified 2026-09-04. This is a specification analysis, not a physical ride review.
Where to buyStockist
BikeFinder is an independent directory. We link to retailers; prices and stock are set by the seller and shown as at the date checked.
