eONE-FORTY 2024
How current the bike is — newer chassis, motor and battery score higher. 10 = brand-new, 0 = legacy.
Aluminium 29er full-suspension trail on Shimano EP8

The Merida eONE-FORTY 2024 is the trail-oriented sibling of the long-travel eONE-SIXTY, an aluminium full-suspension eMTB built around the Shimano EP801 motor and a 750 Wh removable battery (note the gold facts list the battery as a 630 Wh BT-E8036 in some configurations: trim variation applies). Headline numbers: 150 mm of fork travel, 143 mm at the rear, 85 Nm of EP801 torque, a 26 kg claimed weight, a 66.5 degree head angle, a 449 mm chainstay and reach progression from 431 mm on XS to 511 mm on XL across an exceptional 10-size matrix. Production status: discontinued. The eONE-FORTY was Merida's mid-travel trail platform and its replacement is the eONE-SIXTY family at the long-travel end and various Big Trail variants for the down-country buyer.
Drive system and range. Shimano EP801 delivers 85 Nm of torque, 250 W nominal and a manufacturer-claimed 600 W peak from a 2.7 kg motor. EP801 has earned a reputation for smooth power modulation and intuitive control, particularly on technical climbing in tight switchbacks. The 750 Wh battery (or 630 Wh on smaller sizes per @Blokie) is removable. @Blokie documents that the prior 2021 eONE-FORTY Small frame only accommodated the smaller E8035 battery due to frame aperture geometry: worth checking on used buys. Real-world range on EP801 at 750 Wh in trail use typically lands 45 to 65 km in mixed assist on rolling terrain, putting the eONE-FORTY in genuine all-day touring territory.
Geometry and handling. A 66.5 degree head angle is squarely trail-bike territory, steeper than typical 65 to 65.5 degree all-mountain rivals and signalling a quick-handling, climb-focused brief. Reach progression is exceptional: 10 size configurations (XS, X-Short, S, Short, M, Mid, L, Long, XL, X-Long) cover 431 mm to 511 mm in 20 mm steps with twin geometry options per nominal size. This is one of the most fit-flexible eMTB platforms in the market. The 449 mm chainstay is held constant across all sizes. Wheelbase 1185 to 1285 mm.
Build and value. Merida published the eONE-FORTY at £4150 retail for the spec on file, 26 kg. At this price you get the EP801 drive unit, a 750 Wh removable battery, the aluminium 150/143 mm chassis and the EP801 ride feel. @Brennan20 documents a 2021 eONE-FORTY 500 XL with EP8, 630 Wh battery, upgraded Fox 36 eMTB fork, Fox DPX2 shock, Shimano XT 10-speed drivetrain, Magic Mary tyres and 882 km on the odometer listed at £2200: a useful real-world second-hand benchmark.
Community-verified strengths. Three things owners praise. The chassis-and-fit flexibility: the 10-size matrix is industry-leading. The proven EP801 motor with the right-sized 750 Wh battery is a sensible match for the 150/143 mm trail chassis. And Merida's overall chassis quality is well-documented across the forum, with the eONE-FORTY inheriting the same build values as the eONE-SIXTY family.
Caveats and known gripes. Three honest flags. @Studley documents the stock shock has a manufacturing issue: the wrong grade of grease is used, which clogs a port and causes the two air chambers to equalise, leading to pedal strikes every 150 km. The fix (rebuild with Fox oil) is well-documented but is a real workshop overhead. The 66.5 degree head angle is steeper than most modern trail rivals and may feel under-slack to riders coming from a Levo Comp or Stereo Hybrid 140. The fixed 449 mm chainstay across all sizes is a missed-trick for taller riders. Production is discontinued, so future-proof support is via Merida's broader Shimano EP-platform parts.
Verdict. The eONE-FORTY 2024 is for the second-hand or end-of-range buyer who finds a discounted unit and wants a properly-sized trail eMTB with the EP801 motor, the 10-size fit-matrix and a 750 Wh removable battery. Plan on factory-rebuilding the stock SR Suntour shock with proper Fox oil and accept the steeper trail-bike geometry. Riders prioritising newer chassis, slacker geometry or current production support should look at the Merida eONE-SIXTY, Trek Rail+ or Specialized Levo Comp.
Geometry · hover a row to highlight the measurement on the bike
| XS | Short | S | Mid | M | L | Long | XL | X-Long | X-Short | |
|---|---|---|---|---|---|---|---|---|---|---|
| Toptube | — | 564 mm | — | 585 mm | — | — | 607 mm | — | 628 mm | 543 mm |
| Reach | 431 mm | 451 mm | 451 mm | 471 mm | 471 mm | 491 mm | 491 mm | 511 mm | 511 mm | 431 mm |
| Stack | 610 mm | 620 mm | 620 mm | 624 mm | 630 mm | 640 mm | 628 mm | 650 mm | 633 mm | 616 mm |
| Seattube | — | 410 mm | — | 425 mm | — | — | 445 mm | — | 465 mm | 400 mm |
| Chainstay | 449 mm | 449 mm | 449 mm | 449 mm | 449 mm | 449 mm | 449 mm | 449 mm | 449 mm | 449 mm |
| Headtube Angle | 66.5° | 66.5° | 66.5° | 66.5° | 66.5° | 66.5° | 66.5° | 66.5° | 66.5° | 66.5° |
| Seattube Angle (eff) | 79.5° | 79.7° | 79.5° | 79.6° | 79.5° | 79.5° | 79.5° | 79.5° | 79.5° | 79.7° |
| Wheelbase | 1185 mm | 1213 mm | 1210 mm | 1235 mm | 1235 mm | 1260 mm | 1257 mm | 1285 mm | 1280 mm | 1191 mm |
| Headtube | — | 105 mm | — | 110 mm | — | — | 115 mm | — | 120 mm | 100 mm |
| Front Centre | 736 mm | 764 mm | 761 mm | 786 mm | 786 mm | 811 mm | 808 mm | 836 mm | 831 mm | 742 mm |
Trims · 1
Base £4,150 | |
|---|---|
| Motor | Shimano EP801 · 85 Nm |
| Battery | Shimano BT-E8036 630Wh · 630 Wh |
| Travel F/R | 150/143 mm |
| Frame | Aluminium |
| Weight | 26 kg |
| Price | £4,150 |
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