Bosch boosts motor torque with new software update

Bosch Performance Line CX software update
(Image credit: Bosch)

As part of Bosch’s 2021 range launch, they are releasing a software update for the Performance Line CX and Cargo Line motors which boosts torque capabilities by 10Nm to a maximum of 85Nm output.

This added torque will mark a significant improvement in acceleration as well as making uphill starts easier and benefitting performance at slow cadences - likely where the extra torque will be felt the most. 

By increasing the effective cadence range, technical or unexpected obstacles can be tackled with more power helping riders accelerate out of tight corners or deal with late gear shifts.

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It’s not just an increase in raw power, the update improves the way that the motor manages the power. New sensor and motor control refine the eMTB mode which applies progressive motor support based on pedal pressure from the rider, which is measured by the motor’s sensors 1000 times per second. Making the power output smoother provides a more dynamic and natural riding quality that should aid traction as well as a more precise application of power when needed.

As part of the eMTB mode, the new Extended Boost function will appeal to riders who find themselves short of a full pedal stroke on slow technical sections of trail. Initiated with a short kick action through the pedals, the motor will respond within a fraction of a second to deliver a burst of power, ideal for tackling steps, rocks and roots on the trail where it’s not possible to put in a full revolution of the cranks.

Luckily for riders that already have 2020 Performance Line CX equipped bikes, they will not need to wait till next year. Bosch is releasing the update this summer which can be installed by your local Bosch retailer. All new 2021 Bosch equipped bikes will come with the update already pre-installed.

Graham Cottingham
Senior reviews writer, Bike Perfect

Graham is all about riding bikes off-road. Based in Edinburgh he has some of the best mountain biking and gravel riding in the UK right on his doorstep. With almost 20 years of riding experience, he has dabbled in downhill, enduro and, most recently, gravel racing. Not afraid of a challenge, Graham has embraced bikepacking over the last few years and likes nothing more than strapping some bags to his bike and covering big miles to explore Scotlands wildernesses. When he isn’t shredding the gnar in the Tweed Valley, sleeping in bushes or tinkering with bikes, he is writing tech reviews for Bike Perfect and the muckier side of Cyclingnews 


Rides: Canyon Strive, 24 Bicycles Le Toy 3, Surly Steamroller

Height: 177cm

Weight: 71kg