| Monday | 9.00am - 5.30pm |
| Tuesday | 9.00am - 5.30pm |
| Wednesday | 9.00am - 5.30pm |
| Thursday | 9.00am - 5.30pm |
| Friday | 9.00am - 5.30pm |
| Saturday | 9.00am - 5.30pm |
| Sunday | 10.00am - 4.00pm |
| Bank Holidays | 10.00am - 5.00pm |

2025 Merida eSilex 400 Electric Road Bike in Green
The dream ticket when discussed in the Merida UK office. A gravel bike with motor assistance, allowing you to go further, tackle more and generally just grin a lot.
MAHLE's ebikemotion system uses a 40Nm rear hub motor powered by a fully integrated 250Wh battery hidden in the downtube.
The low system weight combined with a carbon fork and sophisticated aluminium frame means the bike also feels lively without power assistance. There is almost no drag at all from the motor when it's not engaged.
The system has an iWoc button for controlling support levels and a sophisticated app provides an opportunity to adjust the riding feel as well as offering post-ride analysis features.
The frame has mounts for mudguards and rack and a neat hidden kickstand mount. Cable routing is through the frame with cables entering through a specific headset cap to keep the cockpit neat.
The eSilex can be run with either 700c or 650b wheels.
All UK Mainland Bike Deliveries Over £999 - Free Bike orders are sent via TNT/FedEx with estimated delivery within 1 working day after quoted dispatch time (For Scottish Highlands, Northern Ireland, Isle of Man and the Channel Islands deliveries please allow an additional 1-4 working days).Bike orders under £999 and eBikes will incur a £25 delivery fee.
Free Delivery On Orders Over £199.99 - When you spend more than £199.99 at 99 Bikes deliveries to a UK mainland address will be free (excludes bikes & large items).Certain regions and territories of the UK will incur additional charges, details of which can be found on our delivery page.
Click & Collect Orders -Please be aware Click & Collect orders may take some time to fulfil. We advise not to travel to your chosen store until you have been notified that your order is ready for collection.
We know how eager you'll be to jump on your new bike and hit the dirt or tarmac, so we give you everything you need to get you set up quickly. For full instructions on how you're bike will arrive and what you'll need to do, visit our How Our Bikes Are Built page
Easy Set-Up Instructions
Have your brand spanking new bike ready to ride in less than 15 minutes with our easy to follow guide.
Free Multi-Tool
9 in 1 multi-tool to help you set up and maintain your bike.
Free Pedal Spanner
Attach your pedals with ease using our free tool. Please note pedals are not included with all bikes so please check the specification. You can shop our awesome range of pedals HERE
At 99 Bikes our priority is to ensure that you are highly satisfied with your purchase. In the unlikely event that you aren't, we offer a 30 day online return policy* in which you can receive a full refund. Any item including bikes (with the exception of food) can be returned to us for any reason provided it is received by us in an unused and resalable condition in or with its original packaging which must be undamaged.
Find Out More About Returns >
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battery
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250Wh
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bottom bracket
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Shimano RS500 BSA
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brakes
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Front: Shimano GRX400 2 piston hydraulic disc brake caliper with Shimano RT10 160mm rotor Rear: Shimano GRX400 2 piston hydraulic disc brake caliper with Shimano RT26 160mm rotor
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brake levers
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Shimano GRX400
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cassette
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Shimano CS-HG50; 11-36 teeth; 10 speed
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chain
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KMC e10
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crankset
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Shimano GRX600; 46-30 tooth chainset with 170 mm-XS/S/M, 175 mm-L/XL crank
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fork
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Merida Silex CF2; Tapered; carbon, Max. tyre size: 700 x 42c without mudguards, 700 x 35c with Mudguards. Max 27.5 x 50c
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frame
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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
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grips
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Merida Expert
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handlebars
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Merida Expert GRII; aluminium; 400mm (XS/S), 420mm (M), 440mm (L/XL)
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headset
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Merida 8158
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material
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Aluminum
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motor
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Mahle ix250Wh Battery Pack, Mahle X30 Hub motor, 40Nm
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rear derailleur
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Shimano GRX400
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seatpost
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Merida Expert; aluminium; 30.9mm diameter; in-line
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shifters
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Shimano GRX400
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tyres
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Front: Maxxis Rambler 700 x 40c; Kevlar bead, folding; EXO Rear: Maxxis Rambler; 700 x 40C; Kevlar bead, folding; EXO
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wheelset
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Rims: Merida Comp SL; 17mm inner rim width; 22mm rim depth; aluminium Spokes: Black stainless Front Hub: Shimano HB-TC500; 100 x 12mm; 28 Spokes; Centerlock
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Please note the following size guides are a general overview and represent a rough guide to bike sizing. Each bike may deviate from these figures.
Road Bikes
| Size | XXS | XS | S | M | L | XL | XXL |
| Height (cm) | 155 - 160 | 160 - 166 | 167 - 172 | 173 - 179 | 180 - 185 | 186 - 191 | 192 - 207 |
Mountain Bikes
| Size | XS | S | M | L | XL |
| Height (cm) | 145 - 160 | 150 - 165 | 160 - 175 | 170 - 185 | 180 - 200 |
Hybrid & Urban Bikes
| Size | XS | S | M | L | XL |
| Height (cm) | 150 - 160 | 160 - 170 | 170 - 180 | 180 - 190 | 190 - 200 |




