Bosch says that it’s new Performance Line SX electric bike motor sets a new standard for power to weight in its line-up.
The new motor is geared towards electric gravel bikes, as well as electric hybrids and lightweight electric mountain bikes, with a system weight of around 4kg and a 2kg mid-mounted motor. It also includes a new riding mode and compact battery options.
Bosch says that the 250W continuous power Performance Line SX motor provides a maximum torque of 55Nm and can generate 600W peak power to help you get up steep inclines. It’s also designed to deliver power at higher cadences.
Bosch has decreased the motor’s weight by using a magnesium alloy housing. It’s also reduced the Q Factor to 160mm and claims a new standard in its motors’ noise output.
Once your speed gets over the 25kph cut-out limit, Bosch says that the new motor provides 50 per cent less resistance than its previous electric bike motors and claims that this is barely noticeable.
There’s a new Sprint mode which helps you to get up to maximum speed quickly, and the motor’s power output also increases as you pedal faster.
Alongside the new motor, Bosch has also released a Mini Remote Dropbar control unit. This sits to the left of the stem on a standard width 31.8mm handlebar and is smaller and less intrusive than Bosch’s previous control units, although the brand suggests using the Kiox 300 display if you want extra data.
New battery and range extender
The new Performance Line SX motor is paired with a new 400Wh battery. Accounting for the other half of the 4kg system weight, it is the lightest battery that Bosch has in its line-up. The high energy density, Bosch says, makes it possible to integrate it into the bike frame’s down tube.
Need more range? You can plug in Bosch’s new PowerMore 250 range extender, which as its name suggests provides an extra 250Wh of battery capacity. It’s a 1.6kg water bottle-sized package, although, unlike many range extenders, it doesn’t actually fit in a bottle cage, but needs its own mount.
The new motor system is expected to become available on electric bikes this autumn.
New Smart System portfolio
Bosch has also released updates to its Smart System, which is a modular range of products that link the new motor and battery to…
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