Merida eONE-FORTY 675

About the Merida eONE-FORTY 675

The eONE-FORTY 675 sits squarely in Merida's trail e-MTB lineup, built around a 750 Wh battery that'll outlast most riders' legs and a Shimano EP801 motor that delivers its 85 Nm without the fanfare. It's an aluminium full-suspension machine designed for the kind of riding that mixes technical climbs, rough descents, and the odd fire road link - where you want assistance without compromise and enough travel to handle the nasty bits. The frame uses Merida's Lite IV alloy and houses the battery internally, keeping the silhouette tidy and the centre of gravity low.

What makes this bike interesting is Merida's AGILOMETER sizing philosophy. Rather than locking you into a frame based purely on your inseam, you're invited to choose shorter for nimble, flickable handling or longer for planted, high-speed stability. It's a refreshing approach that acknowledges riders have preferences beyond their height, and it works particularly well on an e-MTB where the motor flattens out some of the traditional trade-offs between size and climbing efficiency. The result is a bike that can feel lively and playful in a Short or Mid, or composed and confidence-inspiring in a Long or X-Long - same chassis, different character.

The 2025 model carries forward the updates introduced in 2024: the EP801 motor replaced the older EP8, bringing smoother power delivery and better heat management, while the 750 Wh battery became standard across the range. You'll find 150 mm of travel up front via a SR Suntour Aion fork and 133 mm out back courtesy of a RockShox Deluxe Select shock, both working through Merida's low-maintenance suspension platform. It's not the longest-travel trail bike out there, but the numbers translate into a ride that's capable on rough ground without feeling like you're wrestling an enduro sled on mellower trails. The geometry is modern - slack enough to inspire confidence, steep enough to keep the front wheel planted when you're grinding uphill - and the overall package weighs in at 26 kg without pedals, which is typical for an alloy e-MTB with this much battery capacity.

Merida eONE-FORTY 675 geometry

The eONE-FORTY 675 uses reach figures that span from 431 mm in X-Short to 511 mm in X-Long, a 80 mm spread that gives you genuine choice in how the bike positions you. A 66.5-degree head angle is slack enough to keep things calm when the trail pitches down, but not so slack that you're fighting the front end in tighter sections. The seat angle sits at 79.7 degrees, which sounds steep on paper but translates into a riding position that keeps your weight centred over the bottom bracket on climbs - crucial when you're hauling 26 kg up technical pitches and you need the front wheel to stay honest.

Chainstays are a consistent 449 mm across all sizes, short enough to let you pop the front wheel over obstacles and manual through compressions, but not so stubby that the bike feels twitchy under power. The wheelbase grows with reach, stretching from 1196 mm in X-Short to 1290 mm in X-Long, and that extra length in the bigger sizes brings high-speed stability without making the bike feel like a barge in switchbacks. Bottom bracket drop is 35.5 mm, a touch on the low side by modern standards, which plants you firmly in the bike and adds to the stable, grounded feel - though you'll want to watch your pedal clearance on rocky, off-camber sections.

What this geometry delivers is a bike that climbs with your weight in the right place and descends without demanding constant input. The longer reach options suit riders who want to weight the front wheel and drive through rough ground, while the shorter sizes reward those who prefer to shift their weight around and play with the bike's balance. It's not a geometry that screams aggression, but it's not timid either - it's pitched right at the rider who wants to cover ground efficiently and still have fun when the trail gets interesting.

Component choices & upgrades

The stock build on the eONE-FORTY 675 is sensibly specced for the bike's intended use. SRAM NX Eagle gives you a 10-50 tooth cassette and reliable 12-speed shifting, while SRAM DB8 four-piston brakes with 200 mm rotors (or 220 mm front and 203 mm rear, depending on spec) offer solid stopping power. The SR Suntour Aion fork and RockShox Deluxe Select shock are both air-sprung and adjustable, giving you enough tuning range to dial in the suspension for your weight and riding style. Maxxis Rekon tyres in 29 x 2.4 are a capable all-rounder - fast-rolling but with enough tread to hook up in loose or damp conditions - and the Merida Expert TR II rims are tubeless-ready with a 28 mm internal width that supports those tyres well.

If you're riding regularly on steep, technical descents or you're a heavier rider, you might find the fork benefits from a damper upgrade or a switch to a burlier chassis - something like a RockShox Lyrik or Fox 36 would add stiffness and control without drastically altering the bike's character. The rear shock is adequate for most trail riding, but if you're pushing hard or riding rougher terrain, a coil conversion or a higher-spec air shock with more adjustment would give you better small-bump sensitivity and support. The brakes are capable, though some riders report they could use more bite; swapping to metallic pads or upgrading to a higher-tier SRAM or Shimano calliper would sharpen things up if you're riding steep or fast.

Tyres are always a personal choice, and the Rekons are a good starting point, but if you're riding wetter or looser conditions you might want something with more aggressive side knobs - a Maxxis Minion DHF up front would add cornering confidence without much penalty in rolling resistance. The dropper post is a Merida Expert TR II with 125 mm, 150 mm, or 200 mm of travel depending on frame size, which is generous and works smoothly, so there's little reason to change it unless you want a specific lever feel or remote routing. The EQ models come with integrated lights, mudguards, and rack mounts, which are genuinely useful if you're using the bike for commuting or bikepacking - no need to upgrade there, it's already sorted.

Where the Merida eONE-FORTY 675 excels

This bike is outstanding at covering ground on varied trail terrain where you need a blend of climbing efficiency, descending capability, and all-day comfort. If your typical ride mixes fire road access, technical singletrack, and the odd rocky descent, the eONE-FORTY 675 will handle it without complaint. The 750 Wh battery and efficient EP801 motor mean you can tackle longer loops or multiple laps without range anxiety, and the suspension travel is enough to smooth out rough sections without feeling like overkill on mellower trails. It's a bike that rewards riders who want to explore, who value versatility over outright specialisation, and who appreciate a machine that doesn't demand constant fettling.

It also does well as a utility e-MTB, particularly in EQ spec. The integrated lights, mudguards, and rack mounts transform it into a practical tool for commuting, errands, or light bikepacking, and the robust aluminium frame shrugs off the kind of abuse that comes with daily use. The AGILOMETER sizing system is a genuine strength here - it lets you tailor the bike's handling to your preferences, so whether you want a nimble, playful ride or a stable, confidence-inspiring one, you can find a size that fits your style rather than just your height.

Where it's not ideal is on very aggressive, enduro-style descents where you're pushing hard into rough, high-speed terrain. The 133 mm of rear travel and the fork's chassis are adequate but not class-leading for that kind of riding, and you might find yourself wishing for more support and stiffness. It's also not the lightest e-MTB out there - 26 kg is typical for an alloy bike with a big battery, but if you're chasing KOMs or racing, you'll feel that weight on the climbs. And while the bike is capable in tight, technical singletrack, some riders find it demands a bit more body effort to hit lines precisely compared to shorter-travel, more flickable machines. It's a trail bike first, not a pure descender or a lightweight XC racer.

Merida eONE-FORTY 675 FAQs

What is the range of the Merida eONE-FORTY 675?
The 750 Wh battery delivers impressive range - expect 40 to 60 km of mixed trail riding depending on terrain, assist mode, and rider weight. An optional 360 Wh range extender is available if you're planning epic days or multi-day adventures. The EP801 motor is efficient, so you'll get more out of each charge than older systems.

What type of riding is the Merida eONE-FORTY 675 best suited for?
It's built for versatile trail riding: technical climbs, rough descents, and long days in the saddle. If your rides mix singletrack, fire roads, and varied terrain, this bike will handle it confidently. The EQ models add utility for commuting or light bikepacking, making it a genuine all-rounder.

How does the Merida eONE-FORTY 675 compare to the Merida eONE-SIXTY?
The eONE-SIXTY offers more travel - 160 mm front and rear - and a more aggressive, enduro-focused geometry. If you're riding steeper, rougher descents and want more suspension support, the SIXTY is the better choice. The FORTY is lighter, more efficient on climbs, and better suited to all-day trail riding where you value versatility over outright descending capability.

What is the weight of the Merida eONE-FORTY 675?
It weighs 26 kg without pedals, which is typical for an aluminium e-MTB with a 750 Wh battery. That weight brings stability and durability, but it's not a lightweight option if you're chasing race times or prefer a more nimble feel.

What motor and battery does the Merida eONE-FORTY 675 use?
It uses the Shimano EP801 motor, which delivers 85 Nm of torque with smooth, natural power delivery and improved heat management over the older EP8. The 750 Wh internal battery is one of the largest in its class, offering excellent range for long rides.

Can I fit mudguards and a rack to the Merida eONE-FORTY 675?
Yes, the EQ models come with integrated lights, mudguards, and rack mounts as standard. If you have the non-EQ version, you'll need to check for mounting points, but the EQ spec is designed specifically for utility use and commuting.

What are the different sizes available for the Merida eONE-FORTY 675?
It's available in X-Short, Short, Mid, Long, and X-Long. Merida's AGILOMETER system encourages you to choose based on desired handling - shorter for agility, longer for stability - rather than just your height, giving you genuine control over how the bike feels.