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 - 4.00pm |
Merida eBig Nine 400 Electric Mountain Bike in Grey
Click & Collect - Always fast, easy & free
Select Click & Collect at checkout and pick up your order at a convenient location
Monday | 9am - 5.30pm |
Tuesday | 9am - 5.30pm |
Wednesday | 9am - 5.30pm |
Thursday | 9am - 5.30pm |
Friday | 9am - 5.30pm |
Saturday | 9am - 5.30pm |
Sunday | 10am - 4.00pm |
Bank Holidays | 10am - 4.00pm |
The power to do more of what matters, whether you want e-assisted off-road fun or a hassle-free commute, all wrapped up in a sleek, high-quality, fully integrated frame.
The power to do more of what matters. That's what the eBIG.NINE 400 offers. More fun when you're riding off-road, with a powerful new Shimano EP6 drive unit to help you up the hills. More time on the bike, with a 630 Wh battery that'll keep you going for miles. More control, thanks to a SR Suntour suspension fork, chunky tyres and powerful Shimano brakes. More of everything except unnecessary weight, thanks to a high-quality aluminium frame that's also got a lifetime warranty.
Arguably the most versatile e-bike in our range, the tried and tested eBIG.NINE embodies the perfect balance of day-to-day usability and sporty leisure activity. It's a bike that can handle serious off-road riding but can also handle the commute to work with ease - especially if you want to have some fun on the way. The high-quality aluminium frame integrates a choice of 630 or 750 Wh battery sleekly into the downtube, with a more economical frame featuring semi-integrated 504 Wh battery on some models. All feature powerful and smooth Shimano drive units that will power you up any hill. Ready to be equipped with mudguards and even a side stand (or available as the EQ fully equipped version), the eBIG.NINE will help you make the most of any situation.
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 will incur a £20 delivery fee.
Free Delivery On Orders Over £50.00 - When you spend more than £50.00 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.
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 >

battery
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Shimano EN806; 630Wh internal battery
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brakes
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Shimano MT200 2 piston hydraulic disc brake caliper with Shimano RT30 180mm rotor
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brake_levers
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Shimano MT200
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cassette
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Shimano LG300; 11-48 teeth; 10 speed
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chain
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Shimano LG500
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charger
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Shimano EC-E6002; 2A charging current
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crankset
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Shimano CRE70-B; 34 tooth chainset with Shimano FC-EM600; 165mm length crank all sizes with Mr. Control CH-E8 mini chainguide
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display
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Shimano SC-EN500
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fork
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Suntour XCM34-Boost LOR DS; 100mm travel; Tapered; 51mm fork offset; Max. tyre size 29" x 2.4"
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frame
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Lite III - Hydroformed 6066 aluminium, integrated battery, internal cable routing, Smart entry ports. Tapered head tube, 148 x 12mm axle standard. Mounts for mudguards and kickstand. Max. tyre size 29"x2.25" with mudguards, 29"x2.35" without
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grips
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Merida Expert EC
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handlebars
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Merida Merida Expert TR II; 760mm wide; 18mm rise
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hubs
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Front Hub Shimano TC500-B; 110 x 15mm; 32 spokes; Centerlock Rear Hub Shimano TC500-HM-B; 148 x 12mm; 36 spokes; Centerlock with Merida Comp TR axle including removable 6/4mm allen key
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motor
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Shimano Steps EP6; 85Nm
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rear_derailleur
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Shimano Cues U6000; GS
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rims
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Merida Comp CC II; 25mm inner rim width; aluminium
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seatpost
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Merida Expert CC; aluminium; 34.9mm diameter; in-line
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shifters
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Shimano CUES U6000
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tyres
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Maxxis Ikon; 29" x 2.2"; kevlar bead; folding
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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 |