PearTune 4.0 Tuning kit for Bosch Smart System CX Gen4 + Gen5 with Rim Magnet

PearTune 4.0 is a tuning kit for eBikes powered by a Bosch Performance Line CX (Gen4/Gen5) motors + Rim Magnet Sensor Once fitted and activated it will remove the factory 15mph speed limit. PearTune works with eBikes fitted with or without a display. For bike's with displays, 19kmh will briefly appear after pressing - + - + on your controller, this indicates the chip is on. It's fully tested on the latest 19.24 Bosch drive unit update and comes with a 1-year warranty Installation Info (Read Before You Buy) This tuning kit requires a moderate to advanced installation. Download Instructions here (PDF). It comes with three key components: • Tuning module • Replacement speed sensor • Electromagnet unit The motor will need to be removed to fit this kit. If you’re not comfortable working on your eBike’s motor, we highly recommend having it installed by a professional bike technician. Important: After purchase, we’ll reach out by email to confirm compatibility with your ebike before dispatching your order. There are a small number of ebikes that don't have enough space to fit the kit ⚠️ For off-road use only. Not legal on public roads. Read full legal disclaimer.