BBR Tuning 2-Stroke Motorized Bicycle Engine Vibration Motor Mounts &ndash; Gas Bike Engine Soft Mount Kit REDUCE ENGINE VIBRATION: The BBR Tuning 2-Stroke Vibration Motor Mount Kit is designed to minimize engine vibration that's transferred to your bicycles frame. These vibration isolators install between your engines mount and frame and are constructed of a hard rubber that dampens as much as 75-85% of engine vibrations. PREVENTS BROKEN STUDS: With proper installations these mounts prevent premature failure caused by hard vibrations and improperly installed engine mount studs. No more broken engine studs or needed to us difficult screw extractors because of installation error. EASY INSTALATION: Installation is a breeze, just remove your engines stock front and rear motor mount studs and replace them with the longer heavy duty ones provided with the kit. Slide on your front and rear rubber block, drop your engine into your frame and tighten up your motor mounts. It's that simple! UNIVERSAL FIT: These vibration motor mounts are designed to work with 48cc, 60cc, 66cc and 80cc 2 stroke gas powered motorized bicycle engine kits. PACKAGE INCLUDES: 2x BBR Tuning Vibration Motor Mount Blocks, 4x 4.5" M6X1.0 Motor Mount Screws, 4x Lock Nuts, 4x Washers, 4x Lock Washers