CURT Adjustable Dual-Ball Channel Mount 2" Shank, 6" Drop - 2" & 2-5/16" Balls, Heavy-Duty

CURT 45900 is an adjustable channel-style dual-ball mount that fits a 2" x 2" receiver, offers two ball sizes (2" and 2-5/16"), and provides up to 5-1/4" rise or 6" drop for versatile, heavy-duty towing.

If you tow multiple trailers or swap loads frequently, this mount reduces the need for several individual ball mounts by combining two ball sizes, an adjustable shank and a channel design in one rugged unit. Made from welded steel with a black carbide powder-coat finish, it’s built to resist corrosion and minimize vibration and rattle while matching trailer tongue heights for safer, more stable towing.

How does this mount adapt to different trailer heights?

The channel-style shank uses a flip-and-pin system that gives you multiple height positions so you can level trailers without guesswork. It lets you select either a rise or a drop and secure the ball assembly at the correct height for each load.

• Shank flips to yield up to 5-1/4" maximum rise.
• Lower positions provide up to 6" maximum drop.
• Multiple mounting holes allow fine adjustments for precise leveling.

Which couplers and towing weights will this mount handle?

This model includes two trailer balls to cover the most common coupler sizes and rated capacities so you can tow a range of loads without swapping hardware. Pay attention to vehicle and hitch ratings to ensure safe use.

• Includes a 2" ball rated for up to 10,000 lbs. gross trailer weight.
• Includes a 2-5/16" ball rated for up to 14,000 lbs. gross trailer weight.
• Combine with appropriate hitch and vehicle ratings for safe towing limits.

Will this mount reduce rattling and make towing quieter?

The dual-pin channel design locks the adjustable assembly in place and creates a tighter fit between components, which reduces chucking and rattling noises that can occur with loose mounts. The heavy steel construction also helps absorb vibration.

• Channel-style mounting with two-pin retention for a snug fit.
• Sturdy welded steel body resists movement under load.
• Black carbide powder coat helps protect against wear and corrosion.

Can I customize length or add other attachments?

The shank includes two hitch-pin positions to offer short or slightly extended reach, and the channel design accepts compatible CURT platform or pintle attachments for different ball sizes or towing configurations.

• Two pin-hole positions provide 11" or 12" shank length options.
• Channel accepts CURT pintle or combo platform attachments for alternate setups.
• Use existing channel accessories to change ball sizes or towing style.

Who this is for: drivers who haul multiple trailers, frequently change trailer couplers, or need a single, adaptable mount for varied loads will benefit most from the CURT 45900. It’s suited to owners of trucks or SUVs with a 2" receiver who require robust capacity, corrosion-resistant construction and straightforward height adjustments without carrying multiple dedicated ball mounts. Always verify your vehicle’s hitch and tongue weight limits before towing.