Curt 40087 2-5/16" Extended Shank GooseNeck Ball

Curt 40087 2-5/16" Extended Shank GooseNeck Ball, 25,000Lb Capacity

The CRT04 CURT 40087 2-5/16" Extended Shank Gooseneck Ball is a heavy-duty towing ball built for serious gooseneck and receiver-style trailer towing, providing up to 25,000 lbs GTW capacity with a 2" shank rise to help achieve proper trailer leveling. Made from high-strength raw steel and heat-treated for wear resistance, it includes a zinc-plated hex nut and helical lock washer with fine threads for a secure, high-holding-strength installation. It’s tested to meet U.S. VESC V-19 specifications and backed by a limited lifetime warranty (one-year finish, one-year parts).

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: CRT04
• Manufacturer Part Number: 40087
• Brand: CURT
• Product Type: 2-5/16" extended shank gooseneck / trailer ball
• Ball Size: 2-5/16"
• Max Capacity: 25,000 lbs GTW
• Shank Diameter: 1-1/4"
• Shank Length: 2-5/8"
• Rise: 2"
• Material: High-strength raw steel
• Finish: Raw steel
• Construction: Heat-treated for optimum wear resistance
• Mounting Hardware: Zinc-plated hex nut + helical lock washer
• Thread Type: Fine threads for superior holding strength
• Testing / Spec: Meets U.S. VESC V-19 specifications
• Warranty: Limited lifetime warranty (one-year finish, one-year parts)
• Installation Note: Mounting platform must be at least 3/8" thick; hole size must be no more than 1/16" larger than the threaded shank diameter

Ideal For

• Heavy-duty towing setups needing a 2-5/16" ball rated to 25,000 lbs GTW
• Gooseneck and receiver-style trailers such as dump trailers, toy haulers, farm trailers, chopper boxes, dual-axle utility trailers, RVs, and small yachts
• Users needing extra adjustment for leveling with a 2" rise extended shank
• High-load applications where heat-treated strength, fine threads, and secure hardware are important