2-5/16" RockerBall Cushion Hitch Trailer Ball - 7500 lbsThe CURT RockerBall™ trailer ball provides improved comfort and enhanced control while towing, featuring our unique ShockDrop™ technology. An integrated cushion isolator allows this hitch ball to turn a standard ball mount into a cushion hitch with anti-rattle capabilities.The RockerBall™ trailer ball dynamically reduces jerking and jarring while towing. As your trailer passes over bumps and potholes, it produces all kinds of vibrations, jolting, chucking, and noise. With a traditional metal-on-metal connection, these annoyances are directly transferred to your tow vehicle, making your ride noisy and uncomfortable and taking a toll on your towing system.The RockerBall™ completely changes your towing experience by absorbing the erratic movement and rattling of your trailer at the coupling point. This provides a smoother ride and increased control over the vehicle and trailer. It also reduces the amount of stress placed on your vehicle, receiver hitch, brakes, and suspension system.The RockerBall™ is also extremely low-maintenance compared to other torsion hitch and cushion hitch options. It has no airbags or bearings to service. Simply apply grease to the integrated zerk fitting as needed for continuous lubrication and smooth operation.The RockerBall™ tow ball retrofits onto a variety of standard ball mounts, virtually any mount with a 2-1/2-inch wide trailer ball tongue platform and a 1-inch trailer ball hole. The anti-swivel base keeps the hitch ball properly oriented and locked in place when fully torqued.The CURT RockerBall™ hitch ball is constructed from forged steel for exceptional strength. The base is covered in a durable powder coat finish, and the ball itself has a chrome plating for long-lasting weather resistance.Features:Dynamic trailer ball featuring ShockDrop technologyDampens jerking and jarring from bumps and potholes for smoother towingCushioned isolators reduce rattling and vibration for a more comfortable rideReduces shock loads to the vehicle during sudden braking or accelerationMinimizes stress on tow vehicle's suspension and brakes for extended longevityRetrofits onto most existing ball mounts to improve current towing experienceVirtually maintenance-free with no airbag or bearings to serviceGrease zerk fittings provide easy lubricationAnti-swivel base fits 2-1/2" wide ball mount tongues with 1" diameter holeForged steel construction for dependable towing powerDurable carbide black powder coat finish on base and chrome plating on ballStandard trailer ball diameter fits 2-5/16" couplersRated for 7,500 lbs. gross trailer weightTested for safety to meet SAE J684 specificationsSpecifications:Patent: # 11,192,408Ball Capacity: 7,500 lbsBall Diameter: 2-5/16 in.Finish: Chrome-platedHub Warehouse: D25Material: Forged steelShank Diameter: 2-1/2 in.Warranty: Limited lifetime warranty (one-year finish, one-year parts)*Ball mount sold separately (not compatible with Rebellion XD ball mount)*The mounting platform must be at least 3/8" thick, and the hole size must not be more than 1/16" larger than the diameter of the threaded shank