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| GTW | 20,000 lbs |
| PROP 65 WARNING: | WARNING: This product may expose you to chemicals including Nickel (Metallic), which is known to the state of California to cause cancer. For more information, go to www.P54Warnings.ca.gov. |
| VTW | 5,000 lbs |

B&W Trailer Hitches is an American manufacturer known for durable, innovative towing products, including gooseneck hitches, fifth-wheel hitches, receiver hitches, and ball mounts. Built in Kansas by employee-owners, B&W products are engineered for dependable performance, easy installation, and long-lasting quality.
B&W Trailer Hitches is an American manufacturer known for building innovative, dependable towing products designed to make hitching easier and towing more comfortable. The company began in 1987 in Humboldt, Kansas, when founders Roger Baker and Joe Works combined their fabrication experience to build custom truck beds and solve common problems faced by truck owners.
B&W changed the gooseneck hitch industry with the introduction of the Turnoverball Gooseneck Hitch. Its under-bed mounting system and reversible hitch ball allowed truck owners to quickly store the ball beneath the bed, leaving a clean and unobstructed surface when the hitch was not in use. B&W later applied the same practical approach to the Companion Fifth Wheel Hitch, creating a removable fifth-wheel hitch engineered for a quiet, smooth, and secure towing experience.
Today, B&W manufactures gooseneck hitches, fifth-wheel hitches, receiver hitches, ball mounts, and towing accessories at its nearly 600,000-square-foot facility. The company is owned by approximately 500 employee-owners who remain committed to American manufacturing, trusted materials, skilled craftsmanship, and long-lasting product quality.
Whether you are towing a work trailer, livestock trailer, camper, or fifth wheel, B&W Trailer Hitches offers thoughtfully engineered towing equipment built to perform mile after mile.
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Call 888-634-9494The Companion™ 20K Slider Hitch (Model 3405) is a gooseneck hitch designed to tow trailers with a maximum trailer weight of 20,000 lbs and a maximum tongue weight of 5,000 lbs. It is a slider-style hitch that allows the coupler to move forward and backward on the truck bed, providing flexibility in coupling height and distance from the cab. It is designed to work with the B&W Turnoverball™ Mounting System.
The Companion 20K Slider Hitch works with all Turnoverball gooseneck hitches except GNRK1309 and GNRK1257. It is designed to fit the B&W Turnoverball™ Mounting System. Special notes apply: for Toyota Tundra with a composite bed (GNRK1222 gooseneck hitch), the polyurethane pads must be removed as they are not compatible with the bed geometry. For Nissan Titan trucks, the foot pad must be positioned on top of a bed rib due to the configuration of the bed ribs.
If your truck is equipped with a removable bed liner or mat, it must be removed before installation so the base can directly connect with the bed. Alternatively, the bed liner can be cut to allow the base to connect directly. Spray-in bed liners are acceptable and do not need to be removed.
Installation requires: a large torque wrench capable of measuring 110 ft-lbs, a 3/4" socket, a 7/16" socket, a 9/16" socket or wrench, a 7/32" Allen wrench, and a hammer.
The kit includes two bolt bags: the Base Bolt Bag (RVB3405) containing 2 pivot arms, 8 lock washers (1/2"), 8 hex cap screws (1/2" x 2"), 1 wire torsion spring, 1 mounting clip, 1 cap screw (1/4" x 1 1/2"), and 1 lock nut (1/4"); and the Coupler Bolt Bag (RVC3006) containing 2 button head cap screws (3/8") and 2 lock nuts (3/8"). The kit also includes the slider base, coupler, saddle, handles, safety pins, and lock pins.
Installation requires the help of 2 or 3 people to carefully lift and position the slider base into the gooseneck hitch socket in the truck bed. The manual warns that components of the hitch are heavy and cumbersome to handle, and proper lifting techniques must be used when moving and handling parts.
Before installation: (1) Remove all parts from packaging and verify all parts and hardware are present using the parts list. (2) Ensure the truck bed is clean and all debris is removed. (3) Loosen the four 1/4" cap screws securing the polyurethane pads on either side of the slider hitch. (4) Locate and disengage the GN latch pin handle of the Turnoverball gooseneck hitch in the driver side fender well by retracting it all the way until it stops, then rotating it clockwise. (5) Remove the Turnoverball from the GN hitch receiver socket.
The 1/2" x 3-1/2" draw-down bolt must be tightened to 80 ft-lbs. This torque value is for dry threads only; do not lubricate the draw-down bolt.
The polyurethane pads should be positioned so that they are both in a bottom rib of the truck bed along their entire length. The slider base legs should be squared with the ribs of the truck. For Nissan Titan trucks, due to the configuration of the bed ribs, the foot pad must be positioned on top of a bed rib. Once positioned, tighten the four 1/4" bolts holding the pads to the base.
After carefully lifting and positioning the slider base into the GN hitch socket in the truck bed, re-engage the GN latch pin handle by turning it counter-clockwise. Verify that the latch pin has passed through both sides of the socket and that the pin is covered up inside the socket by the socket adjuster.
There are six different locations to mount the pivot arms on the slider carriage, illustrated in Table C1 on page 3. These locations allow flexibility in coupler height and distance from the cab. Choose a location so that your trailer will be as level as possible and have adequate turning clearance while in the towing position (with the slider in the forward position). The positions range from lowest (17") to highest (19"), and can be positioned closest to the cab or farthest from the cab (with arms reversed).
Each of the four 1/2" x 2" cap screws securing the pivot arms must be torqued to 110 ft-lbs. Install the cap screws with four 1/2" lock washers, with the flat side of the pivot arms against the bolt plate in the carriage.
Before towing, measure from the center of the coupler to the cab of the truck and from the king pin or pivot point of the trailer to the furthest forward corner of the trailer. Compare these measurements to ensure proper clearance when towing. Also inspect the clearance between the bed sides and the underside of the front of the trailer to ensure there is room for the pitch and roll of the trailer while towing. Additionally, check the clearance between the tailgate and trailer components such as the trailer tongue or pin box, as parts of the trailer may strike the tailgate when sliding the carriage rearward.
Behind each set of arm mounting holes inside the carriage is a threaded block. If the blocks shifted during shipping and the threaded holes are not aligned with the holes in the carriage, try using a screwdriver or similar tool to align the blocks. If a block cannot be aligned through the carriage holes, the threaded blocks can be accessed through the covers on top of the carriage. Each cover is secured with two screws, which can be removed with a 5/32" Allen wrench. Position the blocks with the larger diameter hole openings against the inside face of the carriage and the corner chamfer on the end of the blocks pointing downward. With the blocks aligned, reattach the cover with its top flange under the top lip of the carriage, positioning covers so gaps are closed or minimized.
The leveling kit consists of a wire torsion spring and mounting clip. (1) Locate the flange on the driver side pivot arm that will be closest to the truck cab. Position the clip so that when the spring's coil is in line with the edge of the arm, there will be 1/2" of clearance between the bottom of the polyurethane bushing and the top of the spring. Drive the clip securely onto the flange with a hammer. (2) Pass the 1/4" cap screw through the mounting clip and the wire spring. Thread the 1/4" lock nut onto the 1/4" cap screw. Tighten the lock nut just enough that the spring will stay in place but will still be able to rotate around the bolt if needed.
To install the coupler handle: (1) Locate the two 3/8" x 1-1/4" button head cap screws and two 3/8" flanged lock nuts provided in the coupler bolt bag. Pull out the coupler arm and pin it with the safety locking pin near the base of the arm. (2) Using the button head cap screws and lock nuts, attach the coupler handle to the arm and tighten. (3) Pull out the coupler handle safety pin. Caution: Pulling the arm out away from the coupler creates a pinch point; use caution when installing the handle to avoid injury.
To install the coupler: (1) Lubricate the polyurethane bushings on top of the pivot arms with high grade lithium grease. (2) Place the coupler over the pivot arms. The saddle handles should be parallel with the slider base in the latched position. (3) Place the saddle lock pins through the saddle, then insert the hairpins through the holes in the end of the saddle lock pins to secure the coupler to the pivot arms.
Adjust the resting angle of the coupler plate by rotating the spring on the driver side pivot arm. Pulling the top of the spring away from the cab will increase the angle of the coupler plate. Set the angle of the coupler so that it will tilt away from the cab when coupling. Once the spring's orientation is set, tighten the 1/4" nut.
To attach a trailer: (1) Remove the safety pin from the coupler handle and open it. (2) Adjust the height of the 5th wheel trailer so that the king pin plate is slightly lower than the top of the coupler. (3) Back the truck toward the trailer, centering the trailer's king pin in the coupler, until the king pin engages the jaws. (4) Close the coupler handle and insert the safety pin through the handle and the coupler. (5) Connect the brake and lighting systems before towing. Failure to correctly close the handle and attach the safety pin may result in loss of attachment between the trailer and tow vehicle, leading to property damage, serious injury, or death.
To detach a trailer: (1) Lower the landing gear and chock the trailer wheels. (2) Raise the trailer until the tongue weight is removed from the truck. (3) Unpin the coupler handle and rotate it to the open position to unlatch the jaws. If the jaws do not open, readjusting the landing gear may relieve pressure and allow them to open. (4) Use the safety pin to lock the handle in the open position. (5) When you are sure that the landing gear will support the trailer, move the truck forward to release the jaws from the king pin. The jaws will always open when the pressure of the trailer is taken off the coupler as the truck pulls away.
To perform a pull test: (1) Ensure the truck is stationary with the emergency brake engaged and the tailgate down. (2) Ensure trailer wheels are chocked and landing gear is down, supporting the trailer's weight. (3) Confirm no one is between the truck and trailer. (4) Release the emergency brake and engage the trailer brakes. (5) Gently attempt to pull the trailer forward with the truck. When properly connected, the trailer will prevent the truck from moving. If the truck and trailer are not correctly attached, the trailer will separate from the truck.
To uninstall the coupler: Remove the saddle lock pins, grab the saddle handles, and lift to remove the coupler from the pivot arms. To remove the slider base: (1) Loosen the draw-down bolt. (2) Retract the Turnoverball gooseneck latch pin handle all the way out until it stops, then rotate it clockwise. (3) With the help of 2 or 3 people, carefully lift and position the slider base out of the gooseneck hitch socket.
Never exceed 5 mph (roughly walking speed) when in the maneuvering position. Exceeding this speed may result in property damage, serious injury, or death. The maneuvering position is only intended for parking maneuvers and not for towing.
Before moving the truck, ensure the slider handle is in the locked position. Failure to do so may cause property damage or serious injury. Never hold on to the handle or force it in any direction while the truck is moving. Failure to stand clear of the handle when the slider is in operation could result in serious injury.
The Companion 20K Slider Hitch has a maximum trailer weight rating of 20,000 lbs and a maximum trailer tongue weight rating of 5,000 lbs. Do not exceed the tow or tongue rating of the coupler, hitch, truck or trailer. Exceeding these ratings may cause damage to towing components or loss of attachment between the trailer and truck.
Before each towing trip, perform a visual inspection of the hitch. Regularly check that all pinned connections are secure and that all bolted connections are at the correct torque specification. Check for cracks or damage to the hitch. Do not tow with the hitch if cracks or damage outside of normal wear is found. Towing with a hitch that has cracks or damage could result in damage to the tow vehicle, trailer, towing components or loss of attachment between the tow vehicle and trailer.
No. Do not use the slider 5th wheel hitch with any device that changes the location of the king pin pivot point. The king pin on your trailer must rotate in the jaws of the Companion coupler. Preventing the king pin from rotating within the jaws with a wedge or any other device, such as a Reese Sidewinder® or Reese Revolution®, could result in property damage, serious injury, or death.
Additional caution must be used when towing a wedge car trailer. Towing stability greatly depends on keeping the center of gravity as low as possible. Load heavy cars over the axles. Never tow with a single car on the front of the trailer. When towing a wedge car trailer, never exceed speeds that are reasonable for the roadway conditions (e.g., turns, going around a curve, etc.). Failure to account for proper trailer center of gravity and speeds that are reasonable for the roadway conditions may cause damage to the truck, trailer, towing components, and loss of attachment between the truck and trailer.
Lubricate the polyurethane bushings on top of pivot arms with high grade lithium grease as needed. Lubricate the top surface of the coupler with multi-purpose automotive type chassis grease or use a nylon lube plate to provide a lubricated surface. Grease the jaws with multi-purpose automotive type chassis grease. Grease the saddle through the grease zerk approximately every six months with multi-purpose grease. This allows the coupler to pivot freely.
Grease the saddle through the grease zerk approximately every six months with multi-purpose grease. This allows the coupler to pivot freely.
Approximately 15%-25% of the trailer weight should be on the hitch. The height of the king pin box and pivot arms should be adjusted so that the trailer is approximately level for towing. Allow adequate clearance between the bed side and the underside of the front of the trailer for pitch and roll of the trailer.
The Companion 20K Slider Hitch is designed to work with the B&W Turnoverball™ Mounting System and all Turnoverball gooseneck hitches except GNRK1309 and GNRK1257. Special considerations apply for Toyota Tundra with composite bed (GNRK1222) and Nissan Titan trucks. Consult the manual or contact B&W Trailer Hitches at 800.248.6564 or hitches@turnoverball.com to confirm compatibility with your specific truck and hitch.
You will need: a large torque wrench capable of measuring 110 ft-lbs, a 3/4" socket, a 7/16" socket, a 9/16" socket or wrench, a 7/32" Allen wrench, and a hammer.
If you have a removable bed liner or mat, it must be removed or cut to allow the base to connect directly with the bed. Spray-in bed liners are acceptable and do not need to be removed.
The 1/2" x 3-1/2" draw-down bolt must be tightened to 80 ft-lbs with dry threads only. Do not lubricate this bolt.
Each of the four 1/2" x 2" cap screws securing the pivot arms must be torqued to 110 ft-lbs.
Never exceed 5 mph (roughly walking speed) when in the maneuvering position. The maneuvering position is only intended for parking maneuvers, not for towing.
Maximum trailer weight: 20,000 lbs. Maximum trailer tongue weight: 5,000 lbs. Do not exceed these ratings or the ratings of your truck, trailer, or coupler.
Lubricate polyurethane bushings on pivot arms with high grade lithium grease as needed. Grease the saddle through the grease zerk approximately every six months with multi-purpose grease. Grease the coupler jaws and top surface with multi-purpose automotive chassis grease.
If the jaws do not open when you attempt to unlatch them, try readjusting the landing gear. Readjusting the landing gear may relieve pressure on the coupler and allow the jaws to open. Once the jaws open, use the safety pin to lock the handle in the open position, then move the truck forward to release the jaws from the king pin.
If a threaded block cannot be aligned through the carriage holes using a screwdriver, access the blocks through the covers on top of the carriage. Each cover is secured with two screws, which can be removed with a 5/32" Allen wrench. Position the blocks with the larger diameter hole openings against the inside face of the carriage and the corner chamfer on the end of the blocks pointing downward. With the blocks aligned, reattach the cover with its top flange under the top lip of the carriage, positioning covers so gaps are closed or minimized. Reinstall and tighten the screws.
The manual does not provide troubleshooting guidance for this condition. Verify that you are following the correct procedure: when moving from towing to maneuvering position, pull the handle toward the rear of the truck to move it to the unlocked position, then pull the truck forward slowly until the handle falls and is in the locked position. If the handle does not fall, contact B&W Trailer Hitches at 800.248.6564 or hitches@turnoverball.com for installation support.
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