The gear hub can be shifted at any time, even under load or standing still
The cassette provides a wide range of gears for maximum versatility
Easy one-handed operation
Change hub gears any time
Unique shifting system
SRAM DD3 is a unique system that combines a three speed gear hub with a traditional cassette body controlled by a derailleur. It gives you all the gearing you need, but simplifies the system by putting all the controls in one hand. This means a bike that's easier to use, and lets you focus on what you love most: riding.