E*thirteen XCX+ Seat Tube XC Chain Guide High Clamp World championship gold medal proven top slider design Easily change chains and chainrings without removing wearplate Captive gold anodized alloy hardware Wearplate has chainring size indicators for simple adjustment Includes 3 chainline adjustment cams Will accomodate 32T-44T rings 7075 aluminium backplate Built for XC Weight 71g Replaces conventional front mech