Silex 400
OverviewAbout the Merida Silex 400
The Merida Silex 400 is a gravel bike, listed at $2,499. A drop-bar all-road bike for gravel, dirt and mixed surfaces.
SizingWhat size Silex 400 do I need?
Enter your height to see the size Merida recommends.
| Size | Rider height | In feet |
|---|---|---|
| XS | under 167 cm | under 5 ft 6 in |
| S | 165 to 177 cm | 5 ft 5 in to 5 ft 10 in |
| M | 173 to 185 cm | 5 ft 8 in to 6 ft 1 in |
| L | 181 to 192 cm | 5 ft 11 in to 6 ft 4 in |
| XL | 188 cm and over | 6 ft 2 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
- Gravel
- Wheel size
- 700c
- Frame sizes
- XS, S, M, L, XL
- Price
- $2,499, RRP AUD (Merida Bikes Australia (official); also seen at 99 Bikes, checked 28 Sep 2026)
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
- 607 mm
- Reach
- 412 mm
- Stack/reach
- 1.47
- Head angle
- 69.5 deg
- Seat angle
- 74.5 deg
- Wheelbase
- 1082 mm
- Chainstay
- 430 mm
- BB drop
- 75 mm
- Standover
- 798 mm
GearingRatios
Ratios are derived from the chainrings and cassette. They describe the gearing, not any rider's ability.
Drivetrain & buildFull specification
- Groupset
- Shimano GRX400
- Shifting
- Mechanical
- Drive
- 2x
- Speeds
- 10
- Crank
- Shimano GRX600
- Chainrings
- 46/30
- Cassette
- Shimano Claris HG50
- Rear derailleur
- Shimano GRX400
- Brakes
- Shimano GRX400 disc
- Rotors
- 180mm
- Wheelset
- Merida Expert SL rims, Shimano TC500 hubs
- Rim internal width
- 23 mm
- Stock tyre
- 700x45c
- Max tyre clearance
- 45 mm
- Tubeless
- Yes
- Fork material
- Merida Silex II CF2 carbon
- BB standard
- BSA 68mm
- Thru-axle
- 12x100mm front, 12x142mm rear
- Seatpost
- Merida Comp CC alloy, 0mm setback
- Cockpit
- Merida Expert GR bar 420mm, Team CC stem 80mm
- Saddle
- Merida Comp SL
- Mounts
- cage, bag, fender and cargo mounts
Bike DNAWhat the numbers say
- Position
- Stack-to-reach 1.47 gives a balanced, endurance riding position.
- Steering
- A 69.5 deg head angle points to stable, relaxed steering.
- Climbing
- Lowest ratio 0.83 is a very low climbing gear for steep or loaded climbs.
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 official spec/geometry), 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.
