Quick Shifting Performance: The RollerBoys derailleur pulleys make shifting gears a breeze thanks to the 10-teeth pattern. Widely Compatible: Suitable for use with Shimano, Campagnolo, and SRAM systems. Super Durable: Stronger than regular Nylon materials thanks to a 40% glass-fibre mix. Ultra Smooth: Low-friction ceramic bearings with oil lubrication make for exceptional smoothness and durability. Bushings Included: The bike pulleys come with a complete set of bushings for different shifting systems.
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