MRP Chain Retention SystemsLightweight guide for 4X, slalom, downhill, trail, and cross-countryIdeal for riding when bashguard is not neededDesigned with legendary rider and multiple World Champion Brian LopesNot compatible with bash guardsSealed bearing pulley wheelItem SpecificationsWeight104gChainring BCDN/AmmMax Tooth38teethChainguide Mount TypeISCGRing SetupSingle