CURT Receiver Reducer Sleeve — 2-1/2" to 2" Hitch Adapter, Black Carbide Steel

The CURT 45405 receiver reducer sleeve transforms a 2-1/2" trailer hitch receiver into a 2" opening so you can use 2" shank accessories securely.

This compact adapter sleeve solves size-mismatch problems between your vehicle's 2-1/2" receiver and common 2" ball mounts, bike racks, cargo carriers and other tow accessories. Built from CNC-formed steel and finished in a durable black carbide powder coat, it provides a smooth, corrosion-resistant interface while preserving the hitch's rated capacity. Installation is fast — slide the sleeve into the 2-1/2" receiver, secure with a hitch pin (sold separately), and insert a 2" shank accessory as needed.

How does the reducer sleeve change my hitch compatibility?

The sleeve converts the internal dimensions of a 2-1/2" x 2-1/2" receiver to accept a standard 2" x 2" shank, letting you use widely available tow accessories without replacing your receiver. It is a simple, reversible adaptation that keeps the vehicle’s original hitch in place.

• Fits industry-standard 2-1/2" receivers and accepts 2" shanks.
• Installs quickly by inserting into the receiver opening.
• Compatible with ball mounts, cargo carriers, bike racks and more.

Will using this adapter change towing capacity or safety limits?

The sleeve itself is robustly made from high-strength steel, but it does not increase the hitch or vehicle rating. The gross trailer weight and tongue weight remain limited by your original hitch and vehicle manufacturer's specifications.

• Adapter construction is strong but does not alter vehicle/hitch ratings.
• Always observe the hitch and vehicle load limits when towing.
• Use an appropriately rated hitch pin and secure connections for safe towing.

How durable is the CURT 45405 against rust and wear?

CURT uses a protective black carbide powder coat over mechanically descaled steel for long-term resistance to corrosion, chipping and UV exposure. The welded and CNC-formed construction produces a smooth, consistent part that resists abrasions from repeated insertion and removal.

• Robust powder coat finish provides weather and chip resistance.
• CNC-formed and robot-welded for consistent strength and fit.
• Mechanical descaling creates a smooth surface for the finish to adhere to.

How easy is the CURT reducer to install and remove?

Installation is straightforward and requires only a hitch pin (not included). The sleeve slides into the 2-1/2" receiver and accepts any 2" shank; removal is equally simple when you need the original receiver size back.

• Insert sleeve into the receiver and secure with a hitch pin (sold separately).
• No special tools or permanent modifications required.
• Quick swap between adapters and accessories for flexible use.

Who is this for: The CURT 45405 reducer sleeve is intended for drivers who own vehicles with 2-1/2" x 2-1/2" hitch receivers but frequently use accessories designed for the 2" x 2" standard. It's ideal for RV owners, truck and SUV drivers, and anyone who alternates between different tow gear like ball mounts, cargo racks, or bike carriers and wants a durable, easy-to-install adapter without changing their primary hitch.