CURT 1 in. Shank Switch Ball Set — 1-7/8", 2", 2-5/16" Heads, Tool-Free J-Groove Locking

CURT 42225 Switch Ball set is a 1-inch shank trailer ball system with three removable heads (1-7/8", 2", 2-5/16") that lets you change ball sizes quickly without tools.

The CURT Switch Ball design replaces the need for multiple ball mounts by offering a single, high-strength shank that accepts three different ball heads. Each head twists on and off using CURT’s patented J-groove locking method to provide a secure connection while allowing fast size changes at the hitch. Constructed from premium steel with a nickel-chrome finish and independently tested to SAE J684, this set covers most light- and medium-duty towing tasks.

How do I change ball sizes on the CURT Switch Ball?

Swapping ball heads is tool-free and intuitive: twist the installed head to disengage the J-groove, lift the head off the 1" diameter shank, then align and twist on the alternative head until it locks. The J-groove secures each head against rotation and keeps the coupler seated properly during towing.

• Twist-and-lift removal — no pins, coins, or wrenches needed
• J-groove locks each head in place for safe towing
• 1" diameter shank, 2-1/4" length fits standard 1" hitch holes

What towing capacities and ball sizes are included?

This packaged set includes three ball heads sized for common coupler dimensions and rated for progressively larger loads. Choose the head that matches your trailer’s coupler size and respect the specified capacity for safe towing.

• 1-7/8" ball — rated 3,500 lb capacity
• 2" ball — rated 6,000 lb capacity
• 2-5/16" ball — rated 8,000 lb capacity

Will the Switch Ball fit my hitch and trailer setup?

The set uses a 1" diameter, 2-1/4" long shank that fits standard 1" hitch receiver holes and most ball mounts designed for 1" shanks. Because the shank bears the load, the coupler rides on the ball head rather than pressing on the mount, reducing binding and wear on your ball mount.

• 1" shank diameter — matches common ball-mount bolt holes
• Shank supports load to minimize coupler and mount friction
• Works with most light- and medium-duty trailer couplers

How durable and safe is the CURT Switch Ball construction?

CURT builds the shank and heads from high-strength steel and applies a nickel-chrome finish to resist corrosion and surface wear. Each Switch Ball is independently tested to SAE J684 standards to verify performance under towing conditions.

• High-strength steel construction for long-term durability
• Bright nickel-chrome finish for corrosion resistance
• Independently tested to SAE J684 for verified performance

Who is this for: The CURT 42225 Switch Ball set is ideal for owners of boats, small campers, utility trailers, and other light- to medium-duty trailers who tow multiple rigs or need to change coupler sizes without swapping ball mounts. It suits DIYers who value quick tool-free operation, fleet vehicles that handle varied trailers, and anyone wanting to reduce the weight and clutter of extra ball mounts while maintaining tested, rated towing performance.