Custom Cycle Engineering Mad Dog Mounting System For Harley The Custom Cycle Engineering Mad Dog Mounting System sets a new standard in vibration isolation and durability. It begins with specially designed pivot blocks, precision CNC-machined from high-strength billet aluminum, coupled with tailor-made cylindrical bushings. These bushings incorporate a distinctive metal-on-rubber composition, featuring a tough metal core that is permanently bonded to vulcanized rubber. This combination ensures exceptional longevity and vibration dampening, unparalleled by conventional methods. Features: The ultimate solution for vibration isolation Pivot blocks CNC-machined from high-strength billet aluminum Custom-engineered cylindrical bushings Unique metal-on-rubber design Made in the USA