RollerBoys equipped with low friction ceramic bearings for ultra-smooth glide and exceptional durability
Product Specifications :
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Special teeth pattern for quick shifting performance.
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Lubricated with special ceramic light oil for extra smoothness.
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Composite material provided by EMS Swiss, with 40% glass-fiber.
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Complete set of bushings for different shifting systems included.
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Compatible with Shimano 9, 10 and 11-speed / Mega Range, SRAM X0/X9/X7, Apex, Rival, Force and Red (> 2011) and Campagnolo 11-speed
