The sleek design of the TRP E.A.S.I. A12 seamlessly integrates with the Bosch system, providing a pleasing aesthetic for your bike. The collaboration between Bosch and TRP results in both visual and technological unity. Riders have the choice between manual and automatic shifting, with the preferred cadence easily set via the eBike Flow app or display. The wireless gear shifting, powered by CMD (COMMAND) technology, along with the self-regulating rear derailleur, ensures an unparalleled riding experience. MD technology swiftly and securely transmits rider inputs, making each ride truly unforgettable.

Thanks to intelligent load distribution, the rider will also benefit from longer component service life and less frequent maintenance.

To further put your mind at ease, a collaborative service initiative from TRP and Bosch guarantees swift and efficient technical support.

Meet this member of the E.A.S.I. A12 drivetrain family, your e-bike rear derailleur built for automatic shifting. ePowered by your Bosch eBike technology, A12s RollShift keeps you in the right gear while torque reduction protects your drivetrain for longer life. The Silent Clutch prevents chain slap for a quieter ride, and 13T sealed-bearing pulleys add smooth efficiency. With a rugged horizontal parallelogram and 12-speed precision, shifting under load feels natural and reliable. No matter if you let it auto-shift or take control and shift manually, this derailleur will not let you down, or your chain.

• Automatic Shifting: Precisely synchronised gear changes adjust to you cadence
• Auto-Downshift: When stopping, eShift automatically shifts to the optimum gear for starting off
• Roll Shift: Intuitive gear changes without having to pedal. No matter how much the route or traffic changes, the harmony in the gear changes remains
• Releases cage spring tension which facilitates easy wheel removal and maintenance
• Silent Clutch prevents unwanted chain slap and noise
• Horizontal linkage between clutch and B-Knuckle ePowered by Bosch Power directly supplied from main Bosch Battery
• Torque reduction during shifting to increase the life cycle of your shifting components

Specification

• Compatibility: max. 52T
• Weight: 380g
• Chain line: 52/55mm
• Pulley: 13 T Sealed Bearing Pulleys

All UK Mainland Bike Deliveries Over £999 - Free Bike orders are sent via TNT/FedEx with estimated delivery within 1 working day after quoted dispatch time (For Scottish Highlands, Northern Ireland, Isle of Man and the Channel Islands deliveries please allow an additional 1-4 working days).Bike orders under £999 and eBikes will incur a £25 delivery fee.

Free Delivery On Orders Over £199.99 - When you spend more than £199.99 at 99 Bikes deliveries to a UK mainland address will be free (excludes bikes & large items).Certain regions and territories of the UK will incur additional charges, details of which can be found on our delivery page.

Click & Collect Orders -Please be aware Click & Collect orders may take some time to fulfil. We advise not to travel to your chosen store until you have been notified that your order is ready for collection.

At 99 Bikes our priority is to ensure that you are highly satisfied with your purchase. In the unlikely event that you aren't, we offer a 30 day online return policy* in which you can receive a full refund. Any item including bikes (with the exception of food) can be returned to us for any reason provided it is received by us in an unused and resalable condition in or with its original packaging which must be undamaged.

Find Out More About Returns >