Bosch eBike Systems has announced an update that allows riders to increase the Performance Line CX’s output via a software upgrade in the eBike Flow app. The headline numbers are attention-grabbing: Bosch says maximum power can be raised from 600W to 750W, torque from 85Nm to 100Nm, with maximum support up to 400%.

Crucially, it’s not a blanket “everyone gets 100Nm” switch. Bosch positions it as adjustable, rider-controlled within limits set by the bike brand, and only available where the manufacturer approves it for that model.

When it’s available (and who gets it)

Bosch says the performance upgrade can be downloaded over-the-air for e-bikes with the current Performance Line CX (BDU384Y) after manufacturer approval, with availability from July 2025. That means timing will vary depending on your bike brand’s rollout and confirmation that the drivetrain and cooling design are happy with the higher settings.

More power isn’t free

Bosch also makes the trade-offs explicit: higher values put more strain on mechanical components and can reduce range. In real terms, riders should expect more wear on chains and cassettes if they regularly ride at the top settings, and a quicker battery drain on long days.

eMTB+ mode and a new display

Alongside the performance upgrade, Bosch is also pushing eMTB+ mode — positioned as a more dynamic option than standard eMTB mode — and the Kiox 400C top-tube integrated display. If you’re the kind of rider who wants the extra shove on steep, technical climbs, this feels like Bosch acknowledging that software tuning is becoming part of the reason riders choose one ecosystem over another.