Chain Idlers and Guides - DRS - Max 32t
Chain idlers & guides E.Thirteen "DRS" Dual-Ring-Security shift-ready chain guide system Stepped, lower roller/guide mounts to aluminum backplate and works with Supercharger bashguard to eliminate chaindrop Old ISCG mount 104mm Fits dual chainring 32t max Works with all front derailleurs and middle and granny rings
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