Mondraker

Thundra 2023

Discontinued✎Full Power · Cross-CountryLegacy · 1/10iFreshness 1/10
How current the bike is — newer chassis, motor and battery score higher. 10 = brand-new, 0 = legacy.

Aggressive alloy hardtail with long geometry and a big 720Wh battery

Motor

Shimano EP6 (DU-EP600) · 85Nm · 500W↗

Battery

Simplo internal battery · 720Wh

Travel F/R

120mm / —

Wheels

29F / 29R✎

Frame

Aluminium✎

Weight

22 kg✎

Price

£3,799✎

View the Mondraker Thundra on Mondraker’s site

Mondraker Thundra 2023

From £3,799

The 2023 Mondraker Thundra is a now-discontinued full-power hardtail eMTB built on Mondraker's STEALTH 6061 Xtralite aluminium frame with the brand's Forward Geometry. It runs a Shimano EP600 drive unit with a 720Wh internal Simplo battery, which a 360Wh external range extender can lift to a substantial 1,080Wh. A 120mm RockShox Recon Silver RL fork, 29in wheels and 2.6in Maxxis Rekon trail tyres mark it out as a genuine off-road hardtail rather than a path-and-towpath machine.It was sold as a single build at GBP 3,799. The spec is honest entry-to-mid hardtail: SRAM SX Eagle 1x12 drivetrain with an 11-50T cassette, SRAM Level T two-piston brakes on 200/180mm rotors, in-house Onoff alloy cockpit and a rigid 400mm Onoff seatpost (no dropper at this price). Claimed weight is 22.0kg. Five sizes run from XS to XL.Geometry is moderate by modern trail standards: a 69-degree head angle, 73.5-degree effective seat angle and 455mm chainstays across the range, with reach growing 410mm to 505mm. That makes it an approachable, climbing-friendly all-day trail hardtail rather than an aggressive descender. Note that the urban-spec Thundra X sibling (100mm fork, semi-slick Maxxis Grifter tyres, narrow urban cockpit) is a commuter and sits outside the trail-eMTB remit covered here. The Thundra has since been discontinued from Mondraker's line-up. No verified owner or long-term reliability data is included.

EMTB Forums verdict

The 2023 Mondraker Thundra is a now-discontinued full-power hardtail eMTB built on Mondraker's STEALTH 6061 Xtralite aluminium frame with the brand's Forward Geometry. It runs a Shimano EP600 drive unit with a 720Wh internal Simplo battery, which a 360Wh external range extender can lift to a substantial 1,080Wh. A 120mm RockShox Recon Silver RL fork, 29in wheels and 2.6in Maxxis Rekon trail tyres mark it out as a genuine off-road hardtail rather than a path-and-towpath machine.

It was sold as a single build at GBP 3,799. The spec is honest entry-to-mid hardtail: SRAM SX Eagle 1x12 drivetrain with an 11-50T cassette, SRAM Level T two-piston brakes on 200/180mm rotors, in-house Onoff alloy cockpit and a rigid 400mm Onoff seatpost (no dropper at this price). Claimed weight is 22.0kg. Five sizes run from XS to XL.

Geometry is moderate by modern trail standards: a 69-degree head angle, 73.5-degree effective seat angle and 455mm chainstays across the range, with reach growing 410mm to 505mm. That makes it an approachable, climbing-friendly all-day trail hardtail rather than an aggressive descender. Note that the urban-spec Thundra X sibling (100mm fork, semi-slick Maxxis Grifter tyres, narrow urban cockpit) is a commuter and sits outside the trail-eMTB remit covered here. The Thundra has since been discontinued from Mondraker's line-up. No verified owner or long-term reliability data is included.

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

Descending

Steeper 69° and shorter travel — happiest descending smooth, flowy trail rather than properly rough or steep terrain.

Playfulness

Short 455mm rear and a lighter build — easy to pop, manual and throw around.

Size balance

Rear-long with a planted front in L (FC:RC 1.66) — easy to weight the front and quick to turn, though it can feel light at the back at real speed.

Technical climbing

Shimano EP6 (DU-EP600) and a steep 73.5° seat angle keep the weight planted over the front — a proper winch. 500W 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 forNot built for serious descending — happier on flow than in the rough and steep.

Fine at trail pace; it'll feel out of its depth on properly rough, steep tracks.

How it stacks up vs other Full Power · Cross-Country bikes (from 130 bikes in the database)

Weight22 kg1.7 kg lighter than average

Battery720 Whabout average capacity

Motor torque85 Nmabout average torque

Value for money50/100from £3,799 · most Shimano EP6 (DU-EP600) bikes ~£3,799

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

	XS	S	M	L	XL
Reach	410 mm	425 mm	455 mm	480 mm	505 mm
Stack	640 mm	640 mm	640 mm	658 mm	658 mm
Seattube	380 mm	390 mm	430 mm	470 mm	510 mm
Chainstay	455 mm	455 mm	455 mm	455 mm	455 mm
Headtube Angle	69°	69°	69°	69°	69°
Seattube Angle (eff)	73.5°	73.5°	73.5°	73.5°	73.5°
Wheelbase	1138 mm	1153 mm	1183 mm	1210 mm	1240 mm
Headtube	110 mm	110 mm	110 mm	130 mm	130 mm
BB Height	317 mm	317 mm	317 mm	317 mm	317 mm
Front Centre	683 mm*	698 mm*	728 mm*	755 mm*	785 mm*
FC:RC	1.50	1.53	1.60	1.66	1.73

Trims · 1

	Base £3,799
Motor	Shimano EP6 (DU-EP600) · 85 Nm
Battery	Simplo internal battery · 720 Wh
Travel F/R	120/? mm
Frame	Aluminium (Thundra 6061 Xtralite Full Butted Alloy)
Fork	RockShox Recon Silver RL 29, 120mm, Motion control, Solo Air, tapered steerer tube, Boost 15x110mm axle, 32mm steel stanchions, 42mm offset. Settings: compression adjustment at low-speed to lock, rebound, air preload
Headset	Onoff Saturn tapered for 1-1/8" to 1-1/2" head tube, ACB sealed bearings, top 41x30.2x7x45degx45deg, bottom 51.9x40x8x45degx45deg
Stem	Onoff Sulfur FG 30mm 0deg, 6061 forged alloy, 31.8mm barbore
Handlebar	Onoff Sulfur 1.0 double butted 6061 alloy, rise: 20mm, width: 800mm, 9deg backsweep, 5deg upsweep, 31.8mm barbore
Grips	Onoff Twin, 1 lock-on, 135mm
Saddle	MDK ebike black
Seatpost	Onoff Sulfur 0-R, 6061 T6 Alloy, 3D forged, diameter 31.6mm, length 400mm (rigid, not dropper)
Brakes	Front: SRAM Level T, 2 piece caliper, Centerline 200mm IS 6 bolts one-piece rotor, steel-backed organic pad; Rear: SRAM Level T, 2 piece caliper, Centerline 180mm IS 6 bolts one-piece rotor, steel-backed organic pad
Rear derailleur	SRAM SX Eagle, Type 3 roller bearing clutch, cage lock, long cage, 1x12s, X-actuation 1:1
Crank	FSA Shimano EP8, 165mm, Rings: SRAM X-Sync 2 Eagle 34T, steel, narrow-wide, 104 BCD
Shifters	SRAM Trigger SX Eagle, 12s, X-Actuation 1:1, single click
Cassette	SRAM PG-1210, 11-50T, 12s
Chain	SRAM SX Eagle, 12s, Powerlock
Drivetrain	SRAM SX Eagle, Type 3 roller bearing clutch, cage lock, long cage, 1x12s, X-actuation 1:1; FSA Shimano EP8, 165mm, Rings: SRAM X-Sync 2 Eagle 34T, steel, narrow-wide, 104 BCD; SRAM Trigger SX Eagle, 12s, X-Actuation 1:1, single click; SRAM PG-1210, 11-50T, 12s; SRAM SX Eagle, 12s, Powerlock
Wheels	MDK-HP1 29, 30mm internal width, tubeless ready, 32 spokes (Formula DC711 front / Formula EHL148 Boost rear hubs)
Tyres	Front: Maxxis Rekon 29x2.6, tubeless ready, dual compound, EXO protection, 60TPI, folding bead; Rear: Maxxis Rekon 29x2.6, tubeless ready, dual compound, EXO protection, 60TPI, folding bead
Weight	22 kg
Price	£3,799

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