Thömus

Lightrider E3 Pro 2025

Current✎Full Power · TrailAgeing · 4.6/10iFreshness 4.6/10
How current the bike is — newer chassis, motor and battery score higher. 10 = brand-new, 0 = legacy.

Motor

Shimano EP801 · 85Nm · 600W↗

Battery

Thömus SMP 800 · 800Wh

Travel F/R

170/150mm

Wheels

29F / 29R✎

Frame

Full carbon✎

Weight

23 kg✎

Price

£5,630✎

View the Thömus Lightrider E3 Pro on Thömus’s site

Thömus Lightrider E3 Pro 2025

From £5,630

The Lightrider E3 Pro is Thömus's flagship full-power e-MTB, built around a carbon frame with 150mm of rear travel and a fork that runs from 150mm up to 170mm. Power comes from Shimano's EP801 motor, 85 Nm and 600 W peak, fed by an 800 Wh Samsung-cell pack that can grow to 1,050 Wh with the optional 250 Wh FIDLOCK range extender. That gives it genuine long-tour range alongside the descending capability the travel implies.
Like all Thömus bikes it is sold build-to-order rather than as fixed trims. The frame starts from CHF 5,990 and every component is chosen through the online configurator, which offers three named presets: BASE, ENDURO and TRAIL. The default BASE build leans light and trail-focused with DT Swiss HXC1200 carbon wheels, Vittoria Mezcal tyres and a RaceFace ERA carbon bar, while the geometry can be set to Trail, All Mountain or Enduro character.
Those three geometry configurations are the heart of the bike. The head angle steepens or slackens from 63.6 to 64.4 degrees and the BB drop shifts with fork length, so the same chassis can be tuned from a sharper 64.4-degree trail bike to a 63.6-degree, 170mm Enduro setup. Reach on a size L spans 475 to 483mm depending on configuration, with chainstays held at 445mm across all sizes.
Neat touches reflect the Swiss attention to detail: a USB-C charging port in the headset, a fully integrated EightPins dropper and hidden mounts for mudguards and a kickstand for an SUV-style touring build. Claimed weight is from 23kg.

EMTB Forums verdict

The Lightrider E3 Pro is Thömus's flagship full-power e-MTB, built around a carbon frame with 150mm of rear travel and a fork that runs from 150mm up to 170mm. Power comes from Shimano's EP801 motor, 85 Nm and 600 W peak, fed by an 800 Wh Samsung-cell pack that can grow to 1,050 Wh with the optional 250 Wh FIDLOCK range extender. That gives it genuine long-tour range alongside the descending capability the travel implies.

Like all Thömus bikes it is sold build-to-order rather than as fixed trims. The frame starts from CHF 5,990 and every component is chosen through the online configurator, which offers three named presets: BASE, ENDURO and TRAIL. The default BASE build leans light and trail-focused with DT Swiss HXC1200 carbon wheels, Vittoria Mezcal tyres and a RaceFace ERA carbon bar, while the geometry can be set to Trail, All Mountain or Enduro character.

Those three geometry configurations are the heart of the bike. The head angle steepens or slackens from 63.6 to 64.4 degrees and the BB drop shifts with fork length, so the same chassis can be tuned from a sharper 64.4-degree trail bike to a 63.6-degree, 170mm Enduro setup. Reach on a size L spans 475 to 483mm depending on configuration, with chainstays held at 445mm across all sizes.

Neat touches reflect the Swiss attention to detail: a USB-C charging port in the headset, a fully integrated EightPins dropper and hidden mounts for mudguards and a kickstand for an SUV-style touring build. Claimed weight is from 23kg.

Geometry read

What the numbers mean on the trail

Computed from this bike's geometry, spec and build kit — reach, wheelbase, chainstay, head and seat angles, travel, motor, weight and the fork/tyre/brake spec — and worked out per size, because a fixed chainstay can make an S and an XL feel very different.

Size

Setting

Descending

A solid all-round descender (63.6° head angle, 150mm) — capable in the rough and steep without being an all-out bruiser.

Playfulness

Short 445mm rear and a lighter build — easy to pop, manual and throw around.

Size balance

Not enough geometry on record to judge size balance.

Technical climbing

Climbs well — a 76.2° seat keeps the front planted. 600W of peak power and 85Nm of torque — a strong full-power motor.

Best suited toPlayful trail riding — jumps, pumps and tight, techy singletrack.

Easy to throw around; happiest when you're active on the bike.

Watch out forNo major red flags in the L geometry.

The numbers are well balanced for its category.

How it stacks up vs other Full Power · Trail bikes (from 241 bikes in the database)

Weight23 kgabout average weight

Battery800 Wh95 Wh above average

Motor torque85 Nm13 Nm below average

Value for money70/100from £5,630 · most Shimano EP801 bikes ~£6,480

⚙️ Adjustable geometry: this frame has a high/low setting — low drops the BB and slackens the head angle for more descending stability; high lifts the BB and steepens slightly for clearance and a perkier, more playful feel.

Computed from geometry + spec, not a paid review. Scores are guidance, not gospel.

Paste into any thread to embed this live, interactive panel.

Geometry · hover a row to highlight the measurement on the bike

Flip-chip position

geometry changes with the chip

	S	M	L	XL
Reach	427 mm	454 mm	481 mm	507 mm
Stack	624 mm	637 mm	651 mm	665 mm
Seattube	395 mm	425 mm	454 mm	490 mm
Chainstay	445 mm	445 mm	445 mm	445 mm
Headtube Angle	64.2°	64.2°	64.2°	64.2°
Seattube Angle (eff)	76.7°	76.7°	76.7°	76.7°
Wheelbase	—	—	—	—
Headtube	100 mm	115 mm	130 mm	145 mm
Front Centre	—	—	—	—
FC:RC	—	—	—	—

Trims · 1

	Base £5,630
Motor	Shimano EP801 · 85 Nm
Battery	Thömus SMP 800 · 800 Wh
Travel F/R	170/150 mm
Frame	Carbon
Headset	Integrated, with USB-C charging port
Stem	Thömus Ursa Ø35mm, 35mm
Handlebar	Raceface ERA Carbon Riser Pro 780mm
Grips	ESI Silicone Chunky, black
Saddle	Selle San Marco Ground Short
Seatpost	Kind Shock LEV Integra 150mm
Wheels	DT Swiss HXC1200 30mm Carbon (tubeless option)
Tyres	Vittoria Mezcal 29x2.60
Weight	23 kg
Price	£5,630

Rides similarly

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