CURT 40047-85 RockerBall™ – ShockDrop™ 50mm Trailer Ball


$105.00 incl. GST

In stock

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SKU 912-2008 Category


The Curt 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, uncomfortable, and taking a toll on your towing system.The CURT RockerBall™ trailer ball provides improved comfort and enhanced control while towing, featuring the 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 Curt 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.

  • Retrofits onto most existing ball mounts to improve current towing experience
  • Anti-swivel base fits 75mm wide ball mount tongues with 7/8″ diameter hole
  • Standard trailer ball diameter fits 50mm trailer coupling
  • Tested for safety to meet AS4177-2/SAE J684 specifications
  • Ball mount sold separately (not compatible with Rebellion XD ball mount)
  • Patent pending

Additional information

Weight 2 kg
Dimensions 11 × 10 × 19 cm
Limited Lifetime Warranty

Curt Limited Lifetime Warranty


Carbide Black Powder Coat



Material Type

Carbon Steel


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Product Availability

Warehouse only

Warehouse only products are stocked in our off-site warehouse only, and require transfer to our Showroom for collection. If you wish to visit us in store to purchase one of these products, please contact us prior to organise a transfer. Please note that transfers are available for purchases, not for viewing purposes. Transfers occur daily.

Available in-store

Products marked as available in store are stocked in our Showroom at 33 Fishermans Road, Kuluin. Some products may be out of stock at the time of your visit, so please confirm stock availability prior.

Display available

We have a small display of marked products only in our Showroom.

Dropship Item

Products marked as dropship items are sent direct from the Manufacturer. This can add an additional 1-3 days processing before your order is despatched.

Please ensure your shipping details are correct when placing an order. We will always endeavour to include a tracking number for your order, however with dropship items this is not always available.

Please contact us if you have any questions or concerns about the shipping of this product.

Made to Order (MTO) Item

Products marked as made to order are manufactured specifically for your order by the Manufacturer. 

If you require an ETA on these items, please contact us prior to placing your order.

IMPORTANT: We are unable to approve returns or refunds on MTO items.

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