CURT 45331 Trailer Hitch Mount with 2-5/16-in Ball - Heavy Duty Tow

In this review the CURT 45331 trailer hitch mount stands out as a ready-to-tow, heavy-duty option for drivers who tow large trailers regularly; its single biggest selling point is the factory-fitted 2-5/16-in ball and 15,000 lb gross trailer weight rating that removes the guesswork from assembly. The package arrives pre-assembled and ready for use, so a user replacing a worn ball mount or upgrading to handle larger loads will appreciate the immediate usability and the strong construction that aims to make heavy towing simpler and more reliable.

Key Features

• High capacity: Rated for up to 15,000 lb gross trailer weight and 1,500 lb tongue weight, it handles large boat trailers, campers and heavy utility loads with confidence.
• Pre-attached trailer ball: The 2-5/16-in ball is factory-torqued and polished, so the mount is ready to tow out of the box without separate ball installation.
• Standard fit: The 2-in x 2-in shank fits industry-standard 2-in receivers, making it compatible with most trucks and SUVs equipped for heavy towing.
• Built for durability: A black powder coat finish protects the shank and platform from corrosion while the chrome-plated ball resists rust and wear at the coupling point.
• Convenient dimensions: With a 2-in drop, 5/8-in pin hole and 8-1/2-in overall length, the mount gives a predictable rise/drop and straightforward alignment for common trailer setups.

Who It's For

This CURT 45331 is best for owners of trucks or SUVs who tow heavy trailers such as large boat trailers, double-axle utility trailers, deluxe campers or livestock trailers and need a dependable, high-capacity ball mount ready to use. Professionals and weekend haulers who prefer a pre-assembled solution will value the factory-torqued ball and the high tongue weight rating.

It is less suitable for light-duty owners who never exceed small trailer weights or those who need adjustable rise/drop options; if you need multiple height positions or a lighter, more compact mount for occasional towing, look for a different style designed for frequent height changes or lower capacities.

Pros & Cons

Pros

• Solid build and heavy-duty construction that matches the stated 15,000 lb capacity when used as intended.
• Ready-to-tow with a factory-installed 2-5/16-in ball, saving time and ensuring correct torque.
• Corrosion-resistant finishes on both the shank and ball extend service life in outdoor use.
• Standard 2-in shank and common pin hole size make it widely compatible with existing receivers.

Cons

• Customers report mixed fit experiences; some receivers feel loose, so verify fit and consider measuring your receiver before purchase.
• Hitch pin is sold separately, so you will need to source a pin of the correct size if you do not already have one.

Specifications

Brand	CURT
Gross trailer weight rating	15,000 lb
Tongue weight rating	1,500 lb
Ball diameter	2-5/16 in
Shank size	2 in x 2 in
Drop	2 in
Overall length	8-1/2 in

Our Verdict

The CURT 45331 is a practical, value-oriented choice for anyone who needs a heavy-duty, ready-to-use ball mount for frequent towing of large trailers; its factory-torqued 2-5/16-in ball and corrosion-resistant finishes make it a low-hassle upgrade. Buyers should check receiver fit and have a suitable hitch pin on hand, but for heavy towing needs this mount delivers durable performance and good long-term value.

Frequently Asked Questions

Is the ball removable if I need a different size?
Yes, but weight capacity may change if the trailer ball is removed or replaced; the product ships with a pre-attached factory-torqued 2-5/16-in ball.

Will this fit my 2-in receiver?
Yes, the shank is 2 in x 2 in to fit industry-standard 2-in receivers; verify your receiver and pin size before installation.

Does it include a hitch pin?
No, the hitch pin is sold separately, so you will need to supply a compatible 5/8-in pin for secure installation.