Bearing Kit | Transmission Gear Box | Talaria Sting MX3 / MX4Transmission Gear Box Rebuild Kit High Quality Precision Bearing and Seal Kit to Rebuild Your MX3 MX4 Transmission In the unfortunate event that you have an output shaft failure, it is highly recommended to replace all of your gearbox bearings and seals. That is the only way to ensure optimum performance. If there is any damage to the bearings and you don't replace them, your transmission will make a lot of noise when put back into service. Kit