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CURT




Always the correct part
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Always the correct part
We know our products
Quality Products
Free Shipping!
Warranty: Limited Lifetime Warranty (One-Year Finish, One-Year Parts)
Finish: Chrome
Gross Trailer Weight (Pounds): 30,000 LB
Ball Diameter (Inches): 2-5/16 IN
Installation Time Exact (Minutes): 0
While the basic CURT gooseneck ball offers all the towing power needed for towing that heavy-duty flatbed trailer, a standard trailer ball does not always provide the perfect fit for your unique application. The CURT Double Lock gooseneck riser ball offers a quick, easy way to raise your gooseneck coupling point whenever necessary. It uses the same dual-pin locking system for a secure installation and is compatible with all CURT Double Lock gooseneck hitches. The gooseneck riser ball simply slides into the trailer ball hole, locks into place and provides an additional inch of clearance, giving your gooseneck trailer the extra room it needs to avoid damage to your pickup truck bed. The Double Lock gooseneck riser ball features a standard 2-5/16" diameter and offers a gross trailer weight capacity up to 30,000 lbs. At CURT, we know the demands that come with a hard-working lifestyle: the noise of the construction site, the long hours behind the wheel of a tractor, the potential dangers of high-powered equipment. You should expect your towing equipment to endure when facing the same demands. With our tried and true designs and knack for innovation, CURT proudly offers its extensive line of gooseneck hitches, knowing they will never steer you wrong.

CURT offers a variety of high-quality trailer hitches and accessories for select vehicle models. Find the perfect fit for your towing needs at TowUniverse.
CURT, a Lippert brand, offers a complete line of towing products and is the leading manufacturer of custom-fit trailer hitches. We offer the broadest selection of custom-fit hitches, and each one is designed, welded, and coated in Wisconsin.
CURT is also a leader in flat towing products, as well as 5th wheel, gooseneck, and weight distribution hitches, ball mounts, electrical components, cargo solutions, and other towing accessories.
For everything from passenger cars and vans to full-size pickups and SUVs, CURT is 'The First Name in Towing Products®.'
Experts available to answer your questions
Call 888-634-9494Rediscover "Us" Time | Tested. Proven. Safe. Towing Products
The C-603 is a high rise ball accessory designed for use with gooseneck hitch systems equipped with double lock pins. It features a round shank that inserts into the double lock cylinder and is secured by the hitch's locking pins. The product is not designed as a flip and store ball.
The C-603 is designed for gooseneck hitch systems with double lock pins. Before purchasing, verify that your gooseneck hitch has double lock pins and that the ball will fully seat in the gooseneck and be fully locked by those pins. Curt recommends reviewing your specific hitch's compatibility.
No. The C-603 is not designed as a flip and store ball. It is a fixed high rise ball accessory for gooseneck hitches with double lock pins.
1. Disengage the double lock pins on your gooseneck hitch. 2. Remove any ball or other accessory currently in place. 3. Place the round shank of the C-603 into the double lock cylinder. 4. Engage the double lock pins. 5. Verify that the pins fully engage the round shank and pass through the cylinder completely. No drilling or cutting is required.
The double lock pins must pass completely through the cylinder and fully engage the round shank of the ball. This ensures the ball is securely locked in place. Before use, verify that the pins have fully engaged and passed through the cylinder completely.
No. The C-603 requires no drilling or cutting for installation.
Grease the round shank with each use to reduce wear. For hitch accessories that remain in the double lock gooseneck for an extended period of time, Curt Manufacturing recommends lightly lubricating the round shank with grease. Periodically check the receiver hitch to ensure all fasteners are tight and all structural components are sound.
The manual lists a gross load capacity of 30,000 lbs. trailer weight and 7,500 lbs. tongue weight when used as a weight carrying hitch. However, you must not exceed your vehicle manufacturer's recommended towing capacity. Verify your vehicle's towing limits before towing.
The manual lists the hitch weight as 11 lbs.
After installation, verify that the double lock pins fully engage the round shank and pass through the cylinder completely. Periodically check the receiver hitch to ensure all fasteners are tight and all structural components are sound.
The C-603 is designed for gooseneck hitches with double lock pins. Verify that your hitch has double lock pins and that the ball will fully seat and lock in your gooseneck before purchasing.
No drilling or cutting is required.
Insert the round shank into the double lock cylinder and engage the double lock pins. Verify that the pins fully engage the shank and pass completely through the cylinder.
Grease the round shank with each use to reduce wear. For accessories remaining in the gooseneck for extended periods, lightly lubricate the shank with grease.
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