TM Designworks Factory 1 Chain Guide Black KLX KX RMZ TM Designworks revolutionized the rear chain chain with the introduction of its solid body rear plastic chain guide This guide is used by most offroad factory race teams and is endorsed by past national champions Ty Davis, Randy Hawkins, Rodney Smith, Ryan Hughes, Barry Hawk, Nathan Woods, Russ Peason, Steve Hatch, Jason Raines, and the list goes on We have molded an even stronger Factory Edition rear chain guide in black and a perfect OEM color match version This new design incorporates our exclusive RMS (return memory system) proprietary plastic formula so chain guide failures upon impact are a thing of the past The manufacturer includes a 1-year NO FAULT free replacement breakage and wear pad warranty on every purchase