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Replacing the original component, it offers greater impact resistance thanks to its high-strength plastic material.
The Cruna is made in two parts: the body and the slide, the latter of which can be replaced when worn, so you don't have to dismantle the chain when replacing the slide or the Cruna itself.
The cruna's controlled-elasticity structure absorbs shocks and minimises damage to the chain and sprocket.
Chain protection
Can be applied with the included hardware, taking advantage of the original fastenings and without having to dismantle the chain thanks to the removable slide rail