CURT Fusion 2" Ball Mount with Welded 1-7/8" Ball — 2" Shank, 5,000 lb Capacity

The CURT 45131 Fusion ball mount is a welded, ready-to-tow 2" x 2" shank with a permanently attached 1-7/8" trailer ball rated for 5,000 lb gross trailer weight and 500 lb tongue weight.

Built to be a stronger alternative to standard removable-ball mounts, the CURT Fusion series combines a hollow 2" x 2" shank with a robotically welded, permanently affixed trailer ball. This model delivers a compact 7-1/2" overall length, 2" of drop to level trailers, and corrosion-resistant gloss black powder coat protection. It ships with a pin and clip so you can install and tow immediately, and the fixed ball design prevents loosening and theft common to threaded or removable balls.

How does the welded ball improve towing reliability?

A trailer ball welded to the mount removes the weak point of threaded or removable balls by eliminating the ball-to-shank interface. The robotically welded joint is consistent and strong, reducing movement under load and minimizing wear at the connection point.

• Permanent 1-7/8" ball prevents loosening during use
• Robotic welding for uniform, high-strength weld lines
• Gloss black powder coat protects welds and steel from corrosion

Will this ball mount fit my hitch and trailer coupler?

The CURT 45131 fits any receiver with a 2" x 2" opening and a coupler designed for a 1-7/8" ball. Always confirm the lowest rated component in your towing setup — vehicle, hitch, ball mount, or trailer — to avoid exceeding safe capacity.

• Receiver size: 2" x 2" standard
• Ball diameter: 1-7/8" to match common small couplers
• Capacity: 5,000 lb gross trailer weight, 500 lb tongue weight

What are the physical dimensions and mounting details?

This Fusion mount is compact and purpose-built for typical light-duty towing. It measures 7-1/2" from the hitch pinhole to the center of the ball and provides 2" of drop to help level trailers with lower coupler heights.

• Overall length: 7-1/2" from pin hole to ball center
• Drop: 2" for precise trailer leveling
• Includes hitch pin and clip for immediate installation

How durable is the finish and structure over time?

CURT prepares each unit through a cleaning process before applying a gloss black powder coat that resists chipping and corrosion. The hollow shank design reduces weight and allows compatibility with anti-rattle accessories for a firmer hitch connection.

• Surface cleaned for optimal powder coat adhesion
• High-gloss powder coat reduces rust and abrasion
• Hollow shank compatible with anti-rattle kits to reduce vibration

Who is this for: The CURT 45131 Fusion ball mount is ideal for owners of light trucks, SUVs, and cars using a 2" receiver who tow utility trailers, small boat trailers, campers, or livestock trailers that require a 1-7/8" coupler. Choose this mount if you prefer a ready-to-use, theft-resistant welded ball and value a compact, durable, and immediately installable towing solution. Always match this mount's 5,000 lb GTW and 500 lb tongue weight ratings to the lowest-rated component in your towing system.