CURT 20K, A20 5th Wheel Hitch with Rails CURTOriginal price was $1,438.95. Current price is $1,027.95.In Stock
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Includes 5th wheel head, legs and hardware (patent# 8,827,298)
Each truck-trailer configuration is different. Be sure to review each configuration and always ensure adequate trailer-to-cab clearance when maneuvering.
Capacity limited to lowest-rated towing component
Includes 5th wheel head, legs and hardware (patent# 8,827,298)
Warranty: Limited Lifetime Warranty (One-Year Finish, One-Year Parts)
Finish: CARBIDE BLACK POWDER COAT
Gross Trailer Weight (Pounds): 20,000 LB
Installation Time Exact (Minutes): 0
The CURT A20 5th wheel hitch offers smoother, quieter towing for your home-away-from-home, combining the patented technology of our A-series, an easier mounting system and the power of a 20K 5th wheel hitch. Like our A16 hitch, this 20K 5th wheel hitch uses a patented cast yoke to allow for unimpeded head movement, while providing exceptional stability for the trailer. The yoke has a set of poly-torsion inserts to suppress shock loads and reduce excessive noise, and the head features high-strength, interlocking jaws to give the trailer stability and the freedom to pivot and swivel as needed. The A20 5th wheel hitch is also engineered for easier installation. The legs are equipped with two pins to properly align with the mounting holes, and they have easy-access mounting bolts for ergonomic tightening. The 5th wheel head also has a fast, one-pin removal system to make installation and removal from the truck bed easier. This 20K 5th wheel mounts to any industry-standard 5th wheel rails, using the 5th wheel legs or a CURT 5th wheel roller. It can also be mounted into the puck system of a truck equipped with the towing prep package, using our OEM-compatible legs or roller adapters. Once installed, the A20 is fast and simple to operate. It features an extra-wide head opening to increase the coupling area for the trailer, and it has a lockable, single-throw handle that self-resets to the ready-to-couple position after uncoupling. To make coupling even easier, it is equipped with a coupling indicator that is visible from the truck cab. The indicator shows the status of the connection and eliminates the need for you to check multiple times while coupling. To protect the A20 5th wheel hitch against rust, wear and whatever other threats might impede your cross-country tour, it comes with a black carbide powder coat finish and a limited lifetime warranty. We also test the A20 for safety in accordance with SAE J2638 to ensure reliability for the road ahead.
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 A20 5th wheel hitch is rated for 20,000 lbs GTW (Gross Trailer Weight). However, you must never exceed your vehicle manufacturer's recommended towing capacity. The trailer and its contents combined must not exceed the tow vehicle, hitch, and trailer tow ratings.
The A20 is designed to mount to pickup truck bed-mounted base rails. The hitch assembly drops into slots on the top surface of the base rails and is secured with four 1/2" rail mount pins and clips. The base rails must be properly installed, parallel with each other, and aligned according to the rail manufacturer's specifications for your vehicle's year, make and model.
Yes, the A20 can be mounted to existing bed mounting rails. However, alignment issues may arise. If this occurs, you may need to loosen the mounting rail bolts and realign the mounting rails to facilitate installation. It is recommended to replace old lock washers with new ones at this time, and torque mounting rail bolts to the rail manufacturer's specifications. If difficulty persists, contact the rail manufacturer or CURT Technical Service.
The A20 5th wheel is adjustable from 13" to 17", measured from the pickup bed to the top of its skid plate. Adjustment is achieved by adjusting the mid-section up or down in relation to the legs in 2" increments. The typical clearance between the pickup bed rails and the trailer should be a minimum of 5 1/2".
Follow these steps: (1) With your trailer on a firm and level surface with chock blocks in front and behind the tires, extend front trailer lifting jacks and adjust to set the trailer at or near level. (2) Measure from the ground to under the trailer's kingpin box skid plate (or lube plate if used). (3) Measure from the ground to the surface of the pickup bed. (4) Subtract the measurement from step 2 from step 3. This value will be near the height requirement for the A20. Ideally, the trailer should ride as near to level as possible.
The A20 includes: 2 button head cap screws M8 1.25" x 30, 2 lock washers M8, 1 latch spring, 1 safety latch pin 3/8", 4 hex bolts M14, 4 lock washers 14mm, 4 flat washers 14mm, 4 Nylock nuts M14, 4 base rail mounting clips, and 4 base rail mounting pins 1/2" diameter. Additional hardware for the handle assembly includes 2 button head cap screws M8 1.5" x 30.
Assembly order: (1) Attach the leg weldments to the mid-section using the four M14 hex bolts, lock washers, flat washers, and Nylock nuts. (2) Mount the assembled unit to the base rails by aligning the four tabs on the bottom of the legs with the corresponding slots in the mounting rails, then secure with the four 1/2" rail mount pins and clips. (3) Assemble the handle by sliding it over the handle mount bar, inserting the latch spring, positioning both M8 bolts and lock washers, sliding the latch plate into position, and securing with the M8 bolts. (4) Insert the safety latch pin through the handle.
Torque the four 14mm pilot hex bolts to 100 foot lbs. Re-torque after the initial 500 miles and every 1,000 miles thereafter and prior to each individual use.
Torque the two 16mm head pivot bolts to 200 +/- 25 foot lbs prior to each use and every 1,000 miles thereafter.
Never position yourself or others under the trailer's kingpin area (danger zone) during coupling and uncoupling. If you must position any part of your body under the trailer, between the truck and trailer, or between the trailer's kingpin and 5th wheel hitch, you must follow the Danger Zone Precautions: (1) Block all trailer tires in front and behind with appropriate wheel chocks—do not substitute with stones or wood blocks. (2) Front trailer lifting jacks must be supporting the trailer and resting on a firm and level surface. (3) Towing vehicle must be stationary with automatic transmission in park, emergency brake applied, and engine off; manual transmission in neutral, emergency brake applied, and engine off.
Adjust the front trailer lifting jacks so the trailer's kingpin skid plate is approximately 1/2" below the top surface of the 5th wheel's skid plate lead-in ramp. Trailer height setup is critical to allow the 5th wheel jaws to engage the kingpin and lock properly. Never attempt to lower the trailer's kingpin into the 5th wheel.
If the green indicator is visible and the jaws are closed, they must be unlocked prior to use. Remove the safety latch pin from the 5th wheel's handle. Open the jaws by pulling the handle out about 1/2" and then swinging it back toward the front of the tow vehicle. The handle will latch in the unlocked position and the yellow indicator will be visible from the tow vehicle cab. The yellow indicator signifies the hitch is ready to couple.
The yellow indicator (triangle shape) signifies the couple position—the jaws are open and the handle is in the unlocked position. This is the correct configuration for coupling the trailer to the 5th wheel. If the yellow indicator is visible, your A20 5th wheel is ready to couple.
The red indicator (octagon shape) signifies that the jaws are unlocked and the operating handle is latched in the unlock position. If the red indicator is visible while the kingpin is in the jaws, do not tow. The jaws will close but will not lock. Follow the troubleshooting steps in the manual to reset the operating handle to the yellow couple position before towing.
The green indicator (circle shape) signifies that the jaws are closed and the handle is in the locked position. This indicates the hitch is locked and coupled to the trailer. The green indicator should be visible after successful coupling and before towing.
Yes. If you are using a lube plate on the trailer's kingpin, a single 3/16" thick lube plate may be used. If you are not using a lube plate, apply a high-pressure wheel bearing grease to the 5th wheel skid plate. Operating without a lube plate or grease will result in accelerated wear and/or damage to your 5th wheel's skid plate.
After preparing the vehicle and trailer: (1) Back up the towing vehicle while remaining centered and aligned to the trailer's kingpin. The trailer's kingpin skid plate will compress the towing vehicle's suspension and ramp up onto the 5th wheel skid plate. (2) Observe that the trailer kingpin fully seats into the opening on the 5th wheel head, the yellow indicator changes to green, and the operating handle swings rearward toward the trailer to the locked position. (3) Visually confirm the trailer's skid plate is resting completely on the head of the 5th wheel and the jaws are locked around the trailer's kingpin. (4) Insert the safety pin through the locking handle to ensure it cannot be unlocked while towing.
If the kingpin is resting on top of the jaws (indicated by a gap between the skid plates), immediately lower the trailer jacks to lift the kingpin off the jaws. Inspect the 5th wheel for damage that may have resulted from the improper coupling attempt. Do not use the 5th wheel unit if damage exists. If no damage exists, review the coupling instructions and repeat the procedure.
After coupling and prior to removing trailer wheel blocks or raising front trailer jacks, perform the pull test: Set the towing vehicle in a forward gear and lightly tug on the trailer to ensure 100% coupling has taken place. If resistance is felt, release forward pressure, set the vehicle to park (automatic) or neutral (manual), and activate the emergency brake. If resistance is not felt, the trailer may not be coupled correctly. Do not continue applying forward pressure. Immediately stop and back the towing vehicle into the original position. Do not allow the truck and trailer to separate. Review coupling instructions, apply corrective action, and repeat the coupling steps.
Before towing: (1) Confirm the handle safety latch pin has been installed. (2) Attach electrical harnesses. (3) Attach lanyard and insert electric brake break-away plunger; if hydraulic surge brakes are present, attach lanyard from the surge brake assembly as required. (4) Fully retract front trailer lifting jacks. (5) Close truck tailgate or reinstall tailgate as required. (6) Remove tire chock blocks. (7) Check running lights, directional signals, and brake lights for proper operation. (8) Pull forward a few feet and apply brakes to check that trailer brakes are activating; adjust the electric brake controller if necessary.
(1) Remove the safety latch pin from the handle of the 5th wheel. (2) Unlock the jaws by pulling the locking handle out about 1/2" and then swinging it forward until it latches in the unlocked position. The red unlocked indicator will be visible from the cab. (3) Remove the parking brake and slowly drive the tow vehicle out from under the trailer. If resistance is encountered, determine the corrective action and repeat uncoupling steps. (4) As the kingpin moves out of the 5th wheel jaws, the handle will drop back slightly to the couple position and the indicator will change from red to yellow. The 5th wheel is now safely uncoupled and ready to be recoupled.
Refer to the Preparation Troubleshooting section in the manual. Follow steps 1, 2, and 5: (1) Visually check for signs of damage to the locking mechanism and ensure all components are attached and undamaged. (2) Ensure the locking mechanism is free of excessive dirt, rust, grease, snow, ice, or other foreign material. Clean with warm soapy water and lightly lubricate exposed surfaces with a rust inhibitor. (3) If cycling the handle is unsuccessful, apply pressure to the front of the jaw to manually reset the locking pawl. If the handle drops to the couple position and the indicator turns yellow, you are ready to couple. If none of these steps resolve the issue, contact CURT Technical Service.
Lubricate the skid plate before each use and every 1,000 miles. Liberally apply high-pressure wheel bearing grease to the skid plate's top surface. Alternatively, you may use a lube plate in place of grease.
Lubricate the center pivot pin before each use. Remove the center pivot pin and apply a light coating of high-pressure wheel bearing grease. Replace the pin and ensure it is secured with the safety latch pin.
Lubricate the locking pawl before each use. Open the jaws and apply a small amount of grease to the curved surface of the locking pawl. The pawl will be accessible through the operating handle opening in the head side plate.
Lubricate the jaw pivot points before each use. Use a grease gun to apply grease to both zerks located on the front of each jaw. The jaws must be in the closed and locked position for the zerks to be accessible.
Lubricate the linkage pivot points before each use. Use an aerosol applicator to spray a small amount of rust inhibitor or lubricant on the lock handle, linkage bar, and pawl pivot points.
Clean the A20 after each use with warm soapy water and dry with towels or compressed air. It is recommended that the 5th wheel is removed from the vehicle or covered when not in use for extended periods. Spray exposed surfaces with a light coat of rust inhibitor before long-term storage.
Creating a gap between the trailer skid plate and the 5th wheel skid plate is not necessary or recommended. If a gap is present, it should be minimal and no more than 1/16". Excessive gap while coupled can damage internal components of the 5th wheel hitch as well as components of your trailer.
Two removal options are available. Option 1 (complete removal): (1) Remove the four clips and mounting rail pins. (2) Remove the 5th wheel unit from the mounting rails. Option 2 (disassembled removal): (1) Remove the center latch pin and large pivot pin. (2) Lift and remove the head assembly and yoke. (3) Remove the rail clips and mounting pins. (4) Lift and remove the mid-section and leg assembly. Note: If binding occurs, loosen the four 14mm leg mounting bolts to free them from the rails.
Reinstall the 5th wheel in the reverse order it was removed. If removal was per Option 2 (disassembled): (1) Place the mid-section, still attached loosely to the legs, into the mounting rails. (2) Insert the four mounting rail pins and clips. (3) Re-torque the four pilot hex bolts to 100 foot lbs.
The jaws on the 16140 head are spring-loaded. The jaws will open rapidly when the safety pin is removed and the handle is moved to the unlock position. Keep hands clear of the jaws at all times.
Do not crush the handle assembly tube by over-tightening the M8 bolts. The handle assembly must slide freely over the handle mount bar to latch properly.
Do not tow if the red indicator is visible. The red indicator signifies that the jaws are unlocked and the operating handle is latched in the unlock position. If the red indicator is visible while the kingpin is in the jaws, the jaws will close but will not lock. Follow the troubleshooting steps to reset the operating handle to the yellow couple position before towing.
Never tow without visually ensuring the kingpin is properly coupled and the safety pin has been installed. This will ensure the handle cannot be unintentionally unlocked. Additionally, never tow if the red indicator is visible (jaws unlocked), never exceed your vehicle manufacturer's recommended towing capacity, and never position yourself or others under the trailer's kingpin area during coupling and uncoupling.
The A20 is designed for pickup trucks with factory or aftermarket bed-mounted base rails. The base rails must be properly installed, parallel, and aligned per the rail manufacturer's specifications for your vehicle's year, make, and model. Verify your truck has compatible base rails before purchasing.
The A20 is rated for 20,000 lbs GTW. However, you must never exceed your vehicle manufacturer's recommended towing capacity. The trailer and contents combined must not exceed the tow vehicle, hitch, and trailer tow ratings.
Torque the four 14mm pilot hex bolts to 100 foot lbs. Re-torque after the initial 500 miles and every 1,000 miles thereafter and prior to each use. Torque the two 16mm head pivot bolts to 200 +/- 25 foot lbs prior to each use and every 1,000 miles thereafter.
Never position yourself or others under the trailer's kingpin area during coupling. Block all trailer tires with appropriate wheel chocks (not stones or wood blocks). Ensure front trailer lifting jacks are supporting the trailer on a firm, level surface. Keep the towing vehicle stationary with the emergency brake applied and engine off. Never tow without visually confirming the kingpin is properly coupled and the safety pin is installed.
Before each use: lubricate the skid plate, center pivot pin, locking pawl, jaw pivot points (with grease gun), and linkage pivot points (with aerosol lubricant). Re-torque the four 14mm pilot bolts to 100 foot lbs and check the two 16mm head bolts to 200 +/- 25 foot lbs. After each use, clean with warm soapy water and dry. Re-torque bolts after the initial 500 miles and every 1,000 miles thereafter.
The red indicator with open jaws means the jaws are unlocked and the operating handle is latched in the unlock position. Do not tow in this configuration. (1) Visually check for damage to the locking mechanism and ensure all components are attached and undamaged. (2) Ensure the locking mechanism is free of excessive dirt, rust, grease, snow, ice, or other foreign material. Clean with warm soapy water and lightly lubricate exposed surfaces with a rust inhibitor. (3) Apply pressure to the operating handle as if unlocking and release. If the handle drops back to the couple position and the indicator turns yellow, you are ready to couple. (4) If unsuccessful, apply pressure to the front of the jaw to manually reset the locking pawl. If the handle drops to the couple position and the indicator turns yellow, you are ready to couple. (5) If none of these steps resolve the issue, contact CURT Technical Service at 1.877.287.8634.
Follow the troubleshooting steps: (1) Visually check for signs of damage to the locking mechanism. Ensure the jaws are open and the indicator, jaw, handle, and torsion springs are all attached and undamaged. If any springs are missing or damaged, do not attempt to use the hitch until it has been repaired. (2) Ensure the locking mechanism is free of excessive dirt, rust, grease, snow, ice, or other foreign material. Clean with warm soapy water and lightly lubricate exposed surfaces with a rust inhibitor. (3) If all components are undamaged and can freely move, apply pressure to the operating handle as if unlocking and release. If the handle drops back to the couple position and the indicator turns yellow, you are ready to couple. (4) If cycling the handle is unsuccessful, apply pressure to the front of the jaw to manually reset the locking pawl. If the handle drops to the couple position and the indicator turns yellow, you are ready to couple. (5) If none of the above steps resolve the issue, contact CURT Technical Service.
If resistance is not felt during the pull test, the trailer may not be coupled correctly. Do not continue applying forward pressure. Immediately stop and back the towing vehicle into the original position. Do not allow the truck and trailer to separate, as separation can cause damage to the towing vehicle, 5th wheel hitch, and/or trailer, and may result in serious injury or death. Review the coupling instructions, apply corrective action, and repeat the coupling steps.
If the kingpin is resting on top of the jaws (indicated by a gap between the skid plates), immediately lower the trailer jacks to lift the kingpin off the jaws. Inspect the 5th wheel for damage that may have resulted from the improper coupling attempt. Do not use the 5th wheel unit if damage exists. If no damage exists, review the coupling instructions and repeat the procedure.
| Kit # | Head Series | GTW / Vertical Load | Hitch with Standard Legs # | Head Only # | Slider Only # | Base Rails # | Height Range |
|---|---|---|---|---|---|---|---|
| Long-Bed Options | |||||||
| 16120 | A16 | 16,000 / 4,000 lbs. | 16120 | -- | -- | -- | 13" - 17" |
| 16121 | A16 | 16,000 / 4,000 lbs. | -- | 16120 | -- | 16200 | 14" - 18" |
| 16140 | A20 | 20,000 / 5,000 lbs. | 16140 | -- | -- | -- | 13" - 17" |
| 16141 | A20 | 20,000 / 5,000 lbs. | -- | 16140 | -- | 16200 | 14" - 18" |
| 16180 | A25 | 25,000 / 6,250 lbs. | 16180 | -- | -- | -- | 13" - 17" |
| 16181 | A25 | 25,000 / 6,250 lbs. | -- | 16180 | -- | 16200 | 14" - 18" |
| 16190 | A30 | 30,000 / 7,000 lbs. | 16190 | -- | -- | -- | 13" - 17" |
| 16191 | A30 | 30,000 / 7,000 lbs. | -- | 16190 | -- | 16205 | 14" - 18" |
| Short-Bed Options | |||||||
| 16052 | A16 | 16,000 / 4,000 lbs. | -- | 16520 | 16564 | -- | 17-1/2" - 21-1/2" |
| 16053 | A16 | 16,000 / 4,000 lbs. | -- | 16520 | 16564 | 16204 | 18-1/2" - 22-1/2" |
| 16352 | A20 | 20,000 / 5,000 lbs. | -- | 16540 | 16564 | -- | 17-1/2" - 21-1/2" |
| 16353 | A20 | 20,000 / 5,000 lbs. | -- | 16540 | 16564 | 16204 | 18-1/2" - 22-1/2" |
| 16551 | A25 | 25,000 / 6,250 lbs. | -- | 16580 | 16574 | -- | 17-1/2" - 21-1/2" |
| 16553 | A25 | 25,000 / 6,250 lbs. | -- | 16580 | 16574 | 16204 | 18-1/2" - 22-1/2" |
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