Merida eSilex 400 2026 - Electric Gravel Bike
The Merida eSilex 400 is light, agile, and capable both with and without assistance. Powered by the compact MAHLE X30 rear hub motor, it delivers a natural pedalling feel with smooth, subtle support up to 25km/h. The integrated 250Wh battery sits neatly within the downtube, maintaining the bike’s sleek silhouette and balanced handling. With minimal drag when unpowered, the eSilex feels as responsive and efficient as a traditional gravel bike.
Key Features:
- Lite II 6066 triple-butted aluminium frame with internal cable routing
- Carbon CF2 fork with tapered steerer for precision handling
- Shimano GRX400 2x10 drivetrain for smooth, reliable shifting
- Shimano GRX400 hydraulic disc brakes with 160mm rotors
- 700c wheels with Maxxis Rambler 40mm tyres for grip and comfort
- Mudguard, rack and kickstand mounts for adventure versatility
- Available with 0% APR finance
Drive Information:
- Motor: MAHLE X30 rear hub motor, 40Nm torque
- Battery: Integrated 250Wh battery housed in downtube
- User Interface: iWoc button with app connectivity and support level control
Built around Merida’s hydroformed Lite II aluminium frame, the eSilex 400 is designed for versatility and endurance. The frame’s triple-butted tubes keep weight low without sacrificing strength, while full internal cable routing ensures a clean, modern look. Mounting points for mudguards, racks, and a hidden kickstand make it ready for bikepacking, commuting, or weekend touring. Tyre clearance up to 700x45c (or 27.5x47c) gives you the flexibility to adapt the bike to any terrain.
A carbon SILEX CF2 fork reduces vibration and improves front-end precision on rough gravel or broken tarmac. Shimano’s GRX400 2x10 drivetrain provides smooth, reliable gear changes and a wide range to tackle steep climbs and long rides. Hydraulic GRX400 disc brakes offer consistent, confident stopping power in all weather conditions and perfect for adventure riding.
Control of the MAHLE system is intuitive via the top-tube-mounted iWoc button, allowing you to switch between assistance levels on the move. For those who love data, the MAHLE MySmartBike app unlocks extra functionality, including custom ride tuning, range estimation, and post-ride analysis.
Finishing touches include Merida’s ergonomic Expert cockpit, a comfortable Comp SL saddle, and durable Maxxis Rambler 700x40C tyres that strike a great balance between rolling speed and grip. The eSilex can also be fitted with either 700c or 650b wheels, depending on your riding style and terrain.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | Lite II - Hydroformed 6066 triple butted aluminium with integrated battery chamber, mounts for mudguards, rack and kickstand. 9mm QR axle standard, BSA BB standard. Max. tyre size 700 x 45c without mudguards, 700 x 42c with mudguards, 27.5 x 47c |
| Fork | Merida SILEX CF2; carbon |
| Headset | Merida 8158 |
| Stem | Merida Team CC III; material: aluminium; 31.8mm diameter; -6 degree rise; length: 80mm |
| Bars | Merida Expert GRII; material: aluminium; (XS-S) - 400mm, M - 420mm, (L-XL) - 440mm |
| Front Brake | Shimano GRX400; 2 piston with Shimano RT10; 160mm |
| Rear Brake | Shimano GRX400; 2 piston with Shimano RT26; 160mm |
| Front Mech | Shimano GRX400 |
| Rear Mech | Shimano GRX400 |
| Shifters | Shimano GRX ST-RX400, 2x10 Speed |
| Speed | 20 |
| Rims | Merida Comp SL; 17mm inner rim width; 22mm rim depth; material: aluminium |
| Front Hub | Shimano HB-TC500; 100x12mm; 28 Spoke; Centerlock |
| Spokes | Black stainless ; black nipples |
| Front Tyre | Maxxis Rambler; 700Cx40; kevlar bead; EXO |
| Rear Tyre | Maxxis Rambler; 700Cx40; kevlar bead; EXO |
| Seat Post | Merida Expert; material: aluminium; 30.9mm diameter; in-line |
| Saddle | Merida Comp SL; V-mount |
| Chainset | Shimano GRX600; 46-30 tooth chainset; Crank: (XS-M/L) - 170mm, (L-XL) - 175mm |
| Bottom Bracket | Shimano RS501 BSA |
| Chain | KMC E10 |
| Cassette | Shimano CS-HG50; 11-36 teeth; 10 speed |
| Pedals | VP VPE-891 |
| Battery Size (WH) | 250wh |
| Motor | Mahle X30 Drive Unit |
Merida Silex 2026 Size Chart
| Size | Rider Height (Inch) | Rider Height (cm) |
|---|---|---|
| XS | 5'3" – 5'5" | 162 – 167 |
| S | 5'4" – 5'9" | 165 – 177 |
| M | 5'7" – 5'11" | 173 – 185 |
| L | 5'10" – 6'2" | 181 – 192 |
| XL | 6'1" – 6'5" | 188 – 200 |
What size frame do I need if I am between sizes? - read here
Merida Silex 2026 Geometry Chart
| Size | XXS | XS | S | M | L | XL |
|---|---|---|---|---|---|---|
| Stack | 549 | 570 | 588 | 607 | 626 | 645 |
| Reach | 378 | 392 | 402 | 412 | 426 | 441 |
| Head Tube Length | 110 | 130 | 150 | 170 | 190 | 210 |
| Head Tube Angle | 69.5° | 69.5° | 69.5° | 69.5° | 69.5° | 69.5° |
| Bottom Bracket Drop | 75 | 75 | 75 | 75 | 75 | 75 |
| Fork Length | 415 | 415 | 415 | 415 | 415 | 415 |
| Chainstay Length | 430 | 430 | 430 | 430 | 430 | 430 |
| Wheelbase | 1031 | 1048 | 1065 | 1082 | 1104 | 1126 |
| Top Tube Length (horizontal) | 530 | 550 | 565 | 580 | 600 | 620 |
| Standover Height | 707 | 734 | 771 | 798 | 825 | 852 |
| Seat Tube Length | 410 | 440 | 470 | 500 | 530 | 560 |
| Seat Tube Angle | 74.5° | 74.5° | 74.5° | 74.5° | 74.5° | 74.5° |
| Tyre Size | 28″ | 28″ | 28″ | 28″ | 28″ | 28″ |
All measurements are in mm unless otherwise stated.
The above table shows the standard geometry for the bicycle as shipped, other geometry configurations may be available with certain bikes. Please contact us via Live Chat to find out more.
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Merida eSilex 400 2026 - Electric Gravel Bike
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