WHAT High-performing, experience-specific drivetrains that evolve through the line.
WHY To create high-quality, durable drivetrains that provide the most efficient, intuitive, and smoothest experience for the rider at each level–with an emphasis on wide gear ranges.
HOW BASE New 8-speed Altus triple drivetrain for maximum efficiency for varied terrain and usage, with a 28x32 climbing configuration to make even the steepest hills rideable. SPORT/ELITE Shimano 9-speed triple drivetrains offer renowned performance and loads of gears, plus upgraded cranksets with replaceable chainrings makes maintenance easier. COMP/EXP/PRO/LTD For the ultimate in light weight and fast, accurate shifting we’ve upgrade our higher-end Sirrus models with 2x10 drivetrains. For ins-tance, working with SRAM we developed configurations for the Comp (34/48 x 11-36) equal to triples without sacrificing precision, stiffness, or weight. And Expert, Pro, and LTD models have road bike gearing (34/50 x 11-32), plus high-end 2-piece cranks with integrated BB and external bearings—further increasing torsional stiffness for improved acceler-ation and climbing efficiency.