Core Series ChainguidesThe new Core Series (CS) chainguide line offers riders the highest value in chainguides at a leading price point. The addition of the CS line to MRP's premium carbon and aluminum chainguides, allows every rider to enjoy the benefits of a high-end MRP chainguide at a competitive price.The new All-mountain Guide is the love child of two innovative and revered product lines, the 1x and XCG. Perfectly suited to the increasingly popular all-mountain segment, the All-mountain Guide features MRP's patented integrated skid protection and shares the freshly updated upper guide from the G3, but lacks a lower retention mechanism. The All-mountain Guide is a great choice for 5-6" travel bikes when used with the latest tensioned rear derailleurs or on its own for shorter-travel trail bikes or hardtails that require bash protection. The contact-free, "upper-only" chain retention means the All-mountain Guide will be virtually silent and completely drag-free when pedaling. The patented integrated skid will protect your crank and chainring and prevent the chain from ever contacting and potentially damaging your expensive frame.AMg CS- ISCG-05 mount- 28-34T- Premium finish steel backplates- Low-profile nylon upper guide with noise cancelling co-molding- Patented integrated skid- Aluminum guide/skid hardware