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Specialized · Turbo Full Power (Levo Gen 3)

2.2

The Brose-built Turbo Full Power 2.2 was the quiet, belt-driven heart of the Specialized Levo Gen 3 (2022-2024) — a smooth 90 Nm full-power unit prized for its near-silent, organic delivery rather than headline numbers.

2.2 eMTB motor
Specialized 2.2 motor (Brose-based) exploded view
0250500750406080100120730 Wcadence (rpm) →power (W)

Exceptionally flat and elastic — power holds at a high level across the whole cadence range with no breakdown at low or high rpm.

The verdict

Specialized 2.2 is the Brose Drive S Mag rebadged and firmware-tuned for the Levo Gen 3, and it remains one of the most likeable full-power motors ever fitted to an eMTB. Specialized quotes 90 Nm of torque and 565 W of peak power at 250 W rated, with up to 400% assistance metered out in 10% MicroTune steps through Mission Control and the MasterMind TCU. The hardware underneath is more potent than that firmware envelope suggests: in Velomotion's 2022 dyno group test the Drive S Mag hit roughly 730 W at its ceiling — the strongest full-power unit in that test bar the Bosch CX — so the 565 W figure is a deliberately civilised software cap, not a hardware limit.

What sets it apart is character. The belt-and-dual-sprag-clutch driveline makes it the quietest motor in its class, with only a faint whirr in Turbo and no freewheel rattle on descents — though no lab has put a sound-pressure dBA figure to it, so that headline stays qualitative. The dyno backs up the seat-of-the-pants feel: the power curve barely sags at either end of the cadence range, so it pulls cleanly from near-standstill and keeps delivering when you spin it out. Low-speed, low-cadence torque is its calling card, and at 90 Nm it actually out-torqued the 85 Nm Shimano EP8 and 85 Nm Bosch Performance CX (Gen 4) it shared the trail with — it is genuinely good at finishing a climb that a peakier rival would stall on.

The compromises are well known. The belt drive was the Achilles heel of early Brose units; Specialized's wider, stiffer belt and rolling firmware improved durability through the 2022-2024 run but never fully banished it, and a preventative rebuild around 5,000 km is common. It is a sealed, dealer-diagnosed unit, and 36 V architecture and 565 W now look modest next to the 600 W-plus, 100 Nm crop led by its own successor, the Specialized 3.1, on the Gen 4 Levo. But for riders who value silence and smoothness over a spec sheet, the 2.2 still earns its keep.

“The quietest full-power motor of its era — and a dyno that, at 730 W, refuses to sag at either end of the rev range.”

Character

Rider input
Up to 400% assistance, adjustable in 10% MicroTune steps via Mission Control and the MasterMind TCU. Three base modes (Eco / Trail / Turbo) each tunable for both peak power and how aggressively support ramps in.
On the trail
Calm, gentle and organic — assistance swells in smoothly rather than punching, making it superb for traction-limited, technical low-speed climbing while staying serenely quiet.
Noise
Subjectively the quietest motor in its class — a faint Brose 'whisper' whirr in Turbo and no freewheel rattle on descents thanks to the belt and dual sprag clutches. No independent lab has published a sound-pressure dBA figure for the 2.2 specifically; Velomotion ranked it among the quietest by ear in its 2022 group test.
Efficiency
Velomotion's 2022 bench logged the 2.2 at 5.5 Wh/km on the flat and 37.8 Wh/km on a 10% climb — strong on the level but only mid-pack climbing, where the Bosch CX (33.9), Shimano EP8 (35.1) and the un-tuned Brose Drive S Mag (35.8) all use less energy.

The case for and against

Strengths

  • Quietest full-power motor of its generation (by ear)
  • Class-leading 90 Nm torque for its era — out-torqued the 85 Nm EP8 and Bosch CX Gen 4
  • Smooth, organic, traction-friendly delivery
  • Flat, elastic dyno curve to ~730 W with no low- or high-cadence drop-off
  • Strong flat-ground efficiency (5.5 Wh/km)

Compromises

  • Belt drive remains a long-term durability watch-item (~5,000 km rebuild)
  • Sealed unit, dealer-only diagnostics and no third-party tunes (no BLEvo)
  • 565 W firmware cap and 36 V architecture now look modest
  • No lab sound-pressure (dBA) or timed thermal-fade figure published

How it stacks up

In Velomotion's 2022 dyno group test the 2.2 peaked at ~730 W — ahead of the Shimano EP8 (~666 W) and Giant SyncDrive Pro2 (~682 W), and behind only the Bosch Performance CX Gen 4 (~745 W). On torque it actually led that field: 90 Nm versus 85 Nm for the EP8, the Bosch CX Gen 4 and the SyncDrive Pro2 alike, which is a big part of why it feels so authoritative finishing a steep, traction-limited climb. Specialized then caps the deliverable figure to a claimed 565 W in firmware. At ~2.9 kg the drive unit is mid-pack — heavier than the 2.6 kg EP8 but lighter than the Bosch CX. Against today's 600-850 W, 100 Nm units (Bosch CX Gen 5, DJI Avinox, and its own successor the Specialized 3.1) the 2.2 is down on raw shove and torque, yet it still beats nearly all of them on noise and delivery smoothness.
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