TM Design Works Factory Edition Rear Chain GuideT. M. Design Works Chain Guide RCG CR4 Developed for Enduro, Baja, Motocross, and off road. Suitable for all types of riding. The replaceable wear pad work well for high wear conditions like mud, sand, and oversized sprockets. Fits standard and sealed chains. Includes new mounting hardware. Industry leading plastic formula RMS (Return Memory System). Absorbs impacts and returns to center. Friction reducing additives and UV protection to eliminate