CURT 40005 2-5/16" Trailer Hitch Ball 1" x 2-1/8" Shank 7500 lbs Chrome

The CURT 40005 is a heavy-duty 2-5/16" chrome trailer hitch ball built for serious towing applications. Constructed from high-strength, hot-forged steel and protected by a durable chrome-plated finish, this tow ball delivers the strength and corrosion resistance needed for long-term, reliable performance.

Key Features:

• Ball Diameter: 2-5/16" — fits 2-5/16" trailer couplers
• Gross Trailer Weight Capacity: 7,500 lbs.
• Shank Diameter: 1"
• Shank Length: 2-1/8"
• Fine-threaded shank for superior holding strength and a tight, secure grip
• Durable chrome-plated finish for corrosion resistance
• Includes zinc-plated hex nut and helical lock washer for secure mounting
• Tested for safety and meets U.S. VESC V-5 specifications
• Limited lifetime warranty (one-year finish, one-year parts)

Installation Note: The mounting platform must be at least 3/8" thick, and the hole diameter must be no more than 1/16" larger than the threaded shank diameter.

This 2-5/16" trailer ball is ideal for towing heavy receiver-style trailers including dump trailers, toy haulers, dual-axle utility trailers, RVs, and more. Always ensure no single towing component — vehicle, hitch, ball mount, or trailer — is exceeded in its rated weight capacity.