This Center Driveshaft High Speed Support Set prevents vibration of your center rear driveshaft, increasing drivetrain durability.Features:Precision manufactured from high-quality molded composite material - Includes two rubber-shielded ball bearings - Supplied assembled in the dual-battery box configuration - Mount for single battery box configuration included in the set  Includes:1 x Assembled Center Driveshaft High Speed Support Set (Dual battery box configuration with two ball bearings factory installed) 1 x Single Battery Box Configuration Mount