Bosch Efficiency Line SX eBike Motor Pushes out 55 Nm at solely 2 kg


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Coming this autumn is an all-new light-weight eBike motor from Bosch. Weighing a claimed 2 kg, the Bosch Efficiency Line SX provides a mid-level help eBike motor suited to Gravel eBikes and City eBikes, and naturally the quickly rising section of light-weight eMTBs.

As in comparison with the Bosch Efficiency Line CX and Efficiency Line CX Race motors that ship a most torque of 85 Nm, the Bosch SX motor provides a much less aggressive 55 Nm. That’s to not say it wont in future discover a house on extra aggressive eMTBs; solely that it has a extra conservative strategy to energy consumption, complementing the efforts of the rider in a extra mild rider effort:help ratio.

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Bosch Efficiency Line SX eBike Motor

Certainly, Bosch says the Efficiency Line SX motor delivers “a extra pure driving sensation” than its extra highly effective 85 Nm sibling. That stated, it has an enormous peak energy output of 600 Watts. In the meantime, the TQ-HPR50 – of Trek Gas EXe fame – boasts a peak energy of simply 300 Watts. Nevertheless, the 2 are equal by way of their rated steady energy output, which is available in at 250 Watts.

bosch performance line sx ebike motor 400 wh compacttube battery

The Bosch Efficiency Line SX system has a claimed weight of 4 kg. The motor itself weighs round 2 kg, and is thus ~750g lighter than the complete energy Efficiency Line CX Race providing. The 400 Wh CompactTube battery weighs 2 kg, bringing the system weight as much as a claimed 4 kg – that features the Mini Distant and the System Controller. Regardless of its light-weight magnesium casing, the motor itself isn’t fairly as gentle because the TQ-HPR50 which is available in at 1.85 kg.

A brand new PowerMore 250 Wh battery brings vary extension in a package deal the dimensions of a water bottle. This weighs a claimed 1.6 kg, bringing the burden of the Bosch Efficiency Line SX system at its most 650 Wh capability to round 5.6 kg.

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After all, as is the regulation right here in Europe, the Bosch Efficiency Line SX motor stops offering help at speeds over 25 km/h. Nevertheless, key to the declare of its capability to supply a pure driving sensation, this motor provides round 50% much less pedaling resistance (or drag) as in comparison with the Efficiency Line CX motors.

Probably including to the extra pure journey really feel is a narrower Q-Issue. Whereas the full-power Efficiency Line CX motor provides a wider stance of 175mm, the “new sealing idea” and slender cranks carry the Q-Issue of the Efficiency Line SX motor all the way down to 160mm.

bosch performance line sx ebike motor egravel mini remote dropbar

Whereas this lighter SX motor was designed with a spread of eBikes in thoughts, from Gravel eBikes, to light-weight eMTBs, in addition to City eBikes, Bosch has positioned a whole lot of emphasis on what the brand new system can provide to the drop-bar contingent.

For instance, they’ve designed a brand new Mini Distant Dropbar Controller with a 31.8mm clamp diameter meant to be operated from the tops solely.

Additionally notable for Gravel eBikes is the addition of a “Dash” mode, along with the tuneable Tour+ and eMTB modes that riders of any Bosch-powered eMTB will likely be acquainted with. That is stated to “assist eGravel bikers to rapidly attain and keep a excessive velocity. On high-cadence sections the brand new driving mode helps them disproportionately to their very own energy: the quicker the eBiker pedals, the upper the extent of help”.

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“Now that the majority sorts of bicycle have been electrified, the person classes have gotten much more numerous. With the brand new Efficiency Line SX, we’re primarily focusing on sporty riders, for whom a low complete weight is necessary for driving quick and experiencing a pure move. Our aim was to keep up the standard Bosch high quality, driving efficiency and reliability and switch these to gentle, agile bikes. With the Efficiency Line SX, state-of-the-art eBike designs and most driving enjoyable might be optimally mixed.”

Claus Fleischer, CEO of Bosch eBike Programs.

The primary fashions with the Efficiency Line SX are anticipated to be obtainable available on the market from Autumn 2023.


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