Pure riding pleasure. SRAM presents SRAM VIA the new 27-speed and 24-speed groupsets especially for the trekking market. SRAM VIA is an intelligent blend of performance and value. SRAM DualDrive II - The hybrid drive for your bike: Never miss a gear again! Dual Drive II is the innovative gear shifting system that makes shifting and cycling fun. Effortless one-handed gear-shifts for all gears! You can shift any time, even when you’re pedalling hard. Never miss a gear again: maximum riding comfort - from beginner through to experienced tourer.