CURT Trailer Ball Mount for 1-1/4-Inch Receiver — Class 2, 3,500 lb GTW, 1-Inch Drop

CURT 45503 is a Class 2 steel ball mount sized for 1-1/4" receivers that delivers a 3,500 lb gross trailer weight rating with a 1" drop and 3/8" rise.

This compact ball mount is built for everyday towing on light- and standard-duty vehicles. Manufactured with CNC precision and robotic welding, the 45503 provides consistent fit and predictable strength for trailers, small boats and utility loads. Its black powder coat finish resists corrosion and road wear so the hitch maintains reliable service season after season.

How much weight can this ball mount tow safely?

The CURT 45503 is rated for a gross trailer weight (GTW) of 3,500 pounds and a tongue weight (TW) of 350 pounds. Those limits are the maximum for the ball mount itself — the actual allowed towing capacity is the lowest rating among the vehicle, receiver, ball and trailer coupler.

• Gross trailer weight: 3,500 lb
• Tongue weight: 350 lb
• Always confirm vehicle and hitch receiver ratings before towing

Will it fit my trailer ball and receiver?

This mount uses a 1-1/4" x 1-1/4" shank to slide into any standard 1-1/4" receiver and has a 3/4" diameter hole to accept a trailer ball with a 3/4" shank (ball sold separately). The shank’s rounded edges make insertion straightforward, and a standard hitch pin secures the mount in place.

• Receiver shank: 1-1/4" x 1-1/4" (fits industry-standard 1-1/4" receivers)
• Ball hole diameter: 3/4" (accepts 3/4" ball shank)
• Fastening: install with a standard hitch pin or locking pin (not included)

How does the rise and drop affect towing alignment?

The 45503 provides a 1" drop and a 3/8" rise to help achieve a level trailer posture with many vehicle/trailer combinations. Choosing the correct drop or rise option reduces tongue weight imbalance and improves tracking and braking stability while towing.

• Drop: 1" — lowers the ball relative to the receiver for taller trailers
• Rise: 3/8" — raises the ball slightly for lower trailers
• Select height based on vehicle hitch height and trailer coupler height

What makes this CURT ball mount durable and easy to use?

CURT manufactures this mount using precision CNC cutting and robotic welding to maintain consistent dimensions and strength. A tough black powder coat shields the steel from chips, rust and UV exposure so the mount stays serviceable through repeated use.

• Construction: high-strength steel with CNC precision and robotic welds
• Finish: black powder coat for long-term corrosion resistance
• Installation: rounded shank eases insertion; pin secures mount (pin sold separately)

Who is this for? The CURT 45503 is a practical choice for owners of full-size sedans, minivans, crossovers and similarly sized SUVs that use a 1-1/4" receiver and tow light trailers. It suits drivers who haul small boats, utility trailers, popup campers, ATVs or motorcycles within the mount’s 3,500 lb rating and who want a durable, no-nonsense ball mount with straightforward installation and long-lasting corrosion protection.