Vibra-stop 10mm Vibrastop Engine Mounting Pads. VIBRA-STOP 10 MM URETHANE OUTBOARD BACKING/MOUNTING PADS 20 - 90HP. PATENTED AND DESIGNED TO REDUCE VIBRATION AND RESONANCE ON SMALLER OUTBOARDS. When installing the kit or pads only is is vital that you follow all instructions that will be supplied with the kit or pads , in particular note that the torque settings for the engine bolts are a minimum of 28ft/lb or 38nm or a maximum of 34ft/lb or 45nm, and after installation should be checked after the first 10 hours of use then all torque settings should be checked after every 100 hours of use. For Mercury Verado Engines 200-275hp the torque setting should be 38ft/lb or 50nm.