Vehicle-specific Class 3 hitch provides a concealed 2" receiver for towing and hitch-mounted accessories. Rated for 5,000 lbs. GTW and 750 lbs. tongue weight with durable dual-coat corrosion protection.
The Curt 13578 is engineered specifically for select BMW X3 and X4 models, providing a precise custom fit while keeping the main hitch body concealed behind the rear fascia. The standard 2" receiver works with compatible ball mounts, cargo carriers, bike racks, and other hitch-mounted accessories.
Carbon-steel construction is protected with a rust-resistant liquid A-coat and durable gloss black powder coat. The hitch is tested in accordance with SAE J684 and uses existing vehicle mounting points without drilling.
Rated for up to 5,000 lbs. gross trailer weight and 750 lbs. tongue weight
Accepts standard 2" ball mounts and compatible hitch-mounted accessories
Main hitch body installs behind the rear fascia for a cleaner OE-style appearance
Uses existing vehicle mounting points for a custom-fit installation
Drilling is not required, but installation requires removal of rear exterior components and trimming of the underbody panel. Follow the Curt installation instructions and confirm fit before trimming.
Curt states that this hitch is not compatible with vertical hanging bicycle racks that require bicycles to be hung or mounted vertically.
In The Package: • Curt 13578 Class 3 Trailer Hitch • Vehicle-Specific Installation Hardware • Replacement M6 Rivets
Never exceed the lowest-rated component in the towing system. Vehicle manufacturer towing and tongue-weight limits may be lower than the hitch's maximum ratings.