For over 30 years, TM Designworks has been manufacturing innovative and unique products in the motorcycle industry. TMD has been recognized as the leader in chain slide-n-glide technology. With drive chain solutions for virtually all popular model bikes, TMD has been the preferred choice for weekend warriors, factory race teams and championship riders around the globe. One piece "Memory Flex" TM Designworks molded plastic housing. Incorporates TM Designworks trademarked "Zero Drag" Powerlip Rollers for 100% rear wheel horsepower. "Zero Drag" Powerlip Rollers add more lift while speeding the chain through with zero rolling resistance and accurate tension. Chain guide and rollers are Patented design #D532,720. Disperses sand through the bottom for smooth performance. All necessary hardware is included. One-year breakage guarantee on body ONLY. Bolts on without removing the chain.