In spring 2015, the time has come: with the Sram DD3 pulse, Bosch electric bikes in the current Active and Performance Line series will be equipped with a gearshift system that combines automatic and manual operation.

The three-speed gear hub shifts automatically thanks to system integration with the Bosch drive. Sram promises faster, smoother gear changes and therefore less wear and tear. The range should also increase, as the right gear is always engaged and energy is used efficiently as a result.

With the DD3 Pulse system, the rider does not have to give up shifting completely: the 3-speed automatic gear hub has a cassette with 10 sprockets, so you can still shift gears manually using a thumb shifter and conventional rear derailleur.

"Sram DD3 pulse offers situation-appropriate upshifting and downshifting, for example at traffic lights. The new riding pleasure combines the comfort of a modern automatic transmission with the efficiency and sportiness of a derailleur," says Marcus Schneider, Category Manager Sram Urban.

sram.com