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SUPER RECORD 12 SPEED KETTE: New chain Super Record 12 Speed: Slim, robust, smooth and precise. The seemingly simple chain is essential for the safety of the cyclist and for optimum performance of the entire drive system. The new Super Record 12 Speed chain has also been redesigned to allow connection with the other new components of the drive system. The first and fundamental objective, however, was to reduce the dimensions. Also thanks to the new bolts, which are perfectly flush with the outer surface of the links, the width is 5.15 mm. The second objective was to increase performance with the Ultra-Link system, which improves the safety and durability of the chain, and with the special treatment, which significantly increases smoothness and shifting precision.