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CURT
These rails fit any truck, but the mounting brackets that bolt them to your frame are vehicle-specific. Select your vehicle to find the custom-fit bracket kit for an easy, no-drill installation.
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Includes mounting bolts, two base rails and four universal brackets
Includes mounting bolts, two base rails and four universal brackets
Warranty: Limited Lifetime Warranty (One-Year Finish, One-Year Parts)
Finish: GLOSS BLACK POWDER COAT
Installation Time Exact (Minutes): 0
CURT 5th wheel base rails are industry-standard, meaning they can be used with any 5th wheel trailer hitch with industry-standard anchoring points. They are compatible with virtually all CURT 5th wheel trailer hitches and many competitors. Installation of CURT universal 5th wheel base rails is quick and simple. They mount with high-strength hardware, providing a solid mounting place for a new 5th wheel hitch. 5th wheel base rail bolts and other hardware can also be purchased separately to aid in reinstalling used rails. To protect our 5th wheel base rails from corrosion, scratches and UV damage, we coat each one in a co-cured finish of A-coat and powder coat. This gives them the tough skin they need for hauling that RV trailer, flatbed or other heavy-duty trailer and gives you the confidence to tow wherever the horizon leads. This set of 5th wheel rails is rated for 25,000 pound gross trailer weight and has a gloss black finish. Knowing that your 5th wheel trailer hitch is properly mounted in your truck bed is vitally important to the success of your towing. Without a firm attachment point, a 5th wheel hitch is rendered useless to your tow vehicle. When you choose a 5th wheel hitch for your pickup, install it with confidence with a CURT 5th wheel bracket kit and a set of CURT 5th wheel base rails.
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®.'
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The CURT 16150 is a mounting rail kit designed to secure a 5th wheel hitch to a truck bed. It consists of two mounting rails, front and rear brackets, spacers, and fasteners that attach to the truck frame rails. The kit is designed for use with a 5th wheel hitch assembly (not included) and is compatible with select Dodge, Toyota, Chevrolet, GMC, and Ford trucks from 1973 to 2006.
The CURT 16150 is compatible with specific Dodge, Toyota, Chevrolet, GMC, and Ford trucks. Dodge applications include 1993–2001 models. Toyota Tundra is supported for 2000–04 long and short bed. Chevrolet/GMC compatibility spans 1987–2006 models. Ford F-Series trucks are supported from 1973–2004, including F-150, F-250, F-350, and Super Duty models. Consult the vehicle-specific installation guidance on pages 3–5 to confirm your exact year, model, and bed length.
Yes, the CURT 16150 can be installed on short bed trucks, but with important restrictions. On short bed models, there must be at least 52 inches between the hitch and the cab to prevent the trailer from damaging the cab on tight turns. If this clearance cannot be achieved, a 5th wheel roller (such as CURT model 16560) is required so the hitch can be moved rearward before making a tight turn. Always physically verify clearance before towing for the first time.
No. The CURT 16150 is a mounting rail kit only. It provides the rails and brackets to attach a 5th wheel hitch to the truck bed and frame. You must purchase a 5th wheel hitch assembly separately. The mounting rails are designed to accept the legs of a 5th wheel hitch, which are secured with rail hitch pins and clips supplied with the 5th wheel hitch.
The kit includes: two 5/8-11 x 3½ inch carriage bolts, two 5/8-11 x 3 inch carriage bolts, four 5/8 inch washers, four 5/8 inch helical lock washers, four 5/8-11 inch hex nuts, eight HFN 1213 hex flange nuts, eight 1/2-13 x 1½ inch wheel bolts, one 1/2 inch fishwire, and spacers (CM-16150-SP1, CM-16150-SP2, and CM-SP50). All fasteners are listed in the Parts List on page 1.
Required tools include a drill with a 5/8 inch diameter drill bit and a 17/32 inch diameter drill bit, wrenches or sockets for 5/8 inch and 1/2 inch fasteners, and a torque wrench capable of measuring 150 lb-ft and 75 lb-ft. An air wrench is recommended to simplify installation. A fishwire (included) may be needed to align bolts into drilled holes in the frame. Check below the bed and inside frame rails before drilling to ensure no wiring, brake lines, or obstructions are present.
The manual does not specify whether the battery must be disconnected. However, the manual warns that brake, fuel, and electrical lines may need to be loosened or repositioned to provide clearance for new hardware. Consult the vehicle manufacturer's service manual or contact CURT Technical Support at 1-877-287-8634 for guidance on electrical safety during installation.
Some models require modification or removal of heat shields. The manual does not specify which models or provide detailed instructions. Check your truck under the bed before beginning installation. If heat shields obstruct the mounting rail or bracket placement, they may need to be modified or temporarily removed. Contact CURT Technical Support at 1-877-287-8634 for model-specific guidance.
Yes. The manual warns that brake, fuel, and electrical lines may need to be loosened or repositioned to provide clearance for new hardware. Before drilling any holes, check below the bed and inside the frame rail to ensure all wiring, brake lines, and other obstructions are moved out of the way and will not be contacted by the drill. Move these lines as necessary before proceeding with drilling.
You must drill a total of 12 holes: four 5/8 inch diameter holes through the truck bed for the main mounting rail attachment points, and eight 17/32 inch diameter holes through the frame rails (two per bracket, four brackets total) for the wheel bolt attachments. The exact location of these holes depends on your vehicle model and bed length, as specified in the vehicle-specific installation guidance on pages 3–5.
Frame rail holes must be drilled 17/32 inch diameter. This is critical: if holes are too small, the bolt may break; if too large, it will not grip properly. Use a 17/32 inch diameter drill bit and verify the hole size before installing bolts. The manual emphasizes this as a caution in Installation Step 8.
Truck bed holes must be drilled 5/8 inch diameter. These holes are drilled down through the bed at the four marked attachment points where the mounting rails will be secured. After drilling, the square 5/8 inch hole in the end of each mounting rail is lined up over these drilled holes.
Yes, drilling is permanent. The installation requires drilling four holes through the truck bed and eight holes through the frame rails. These modifications cannot be reversed. Consult your vehicle manufacturer regarding warranty implications before proceeding. The CURT warranty states that alteration to or improper installation of this product voids the warranty.
All 5/8 inch fasteners (carriage bolts) must be torqued to 150 lb-ft. This applies to the mounting rail attachment to the brackets. If these bolts are loosened during installation (Step 11) to adjust the mounting rails, they must be re-torqued to 150 lb-ft after adjustment (Step 12).
All 1/2 inch wheel bolt attachment points must be torqued to 75 lb-ft. These bolts secure the brackets to the truck frame rails. Use a torque wrench to ensure proper tightness.
The kit includes three types of spacers: CM-16150-SP1 (0.75 x 1.75 inch, qty 4), CM-16150-SP2 (0.313 inch, qty 4), and CM-SP50 (0.250 x 1.00 x 1.50 inch round hole, qty 1). The 0.75 inch thick spacers are placed under the ends of each mounting rail in line with the drilled holes. The 0.313 inch spacers are used where bed corrugation above the angle bracket is up, leaving a space above the bracket. The 0.250 inch spacer is used only on 1999–2001 Chevrolet Silverado and GMC Sierra applications.
The kit includes two 5/8-11 x 3½ inch carriage bolts and two 5/8-11 x 3 inch carriage bolts. The shorter 3 inch bolts are used on applications where vehicle frame rail clearance may be close to the attachment point. Both lengths can be used in any attachment location; choose based on available clearance.
Position the two mounting rails across the truck bed between the wheel wells. The 5th wheel legs should be positioned between the mounting rails so that the tabs in the base of each leg fit into the slots in the ends of the mounting rails. The hitch should be approximately centered over the truck axle and between the wheel wells on the bed floor. However, exact positioning varies by vehicle model and bed length—consult the vehicle-specific guidance on pages 3–5 for your truck's rear mounting rail distance from the rear edge of the bed.
There must be at least 52 inches between the hitch and the cab to prevent the trailer from damaging the cab on tight turns. On long bed pickups, the hitch centerline can be up to 3 inches forward of the axle. On short bed pickups, this position is not possible, and a 5th wheel roller (such as CURT model 16560) is required so the hitch can be moved rearward before making a tight turn.
The fishwire is used to align wheel bolts into drilled holes in the frame rail when direct insertion is difficult. Thread the fishwire coil over the end of the wheel bolt and pull it through the frame rail and bracket to guide the bolt into the drilled hole. The manual notes that some applications will require the use of a fishwire, and an air wrench will simplify installation.
If the tabs are tight in the mounting rail slots, check to ensure the mounting rails are parallel to each other and square. If not, loosen the 5/8 inch bolts and adjust the mounting rails. Also check that the 5th wheel legs are sitting vertically straight. It may be necessary to shim the 5th wheel legs by placing a washer between the leg and the 5th wheel head. After adjustment, re-torque the 5/8 inch bolts to 150 lb-ft.
The kit includes two straight 'L' brackets (CM-16150-FB) and two angle brackets (one driver side CM-16150-DSRB, one passenger side CM-16150-PSRB). Use angle brackets at locations where frame obstructions will not allow straight brackets to be positioned. If the frame rail is clear of obstructions, angle brackets may be placed at any location. Vehicle-specific guidance on pages 3–5 specifies which bracket type to use at front and rear attachment points for your truck model.
On 1999–2001 Chevrolet Silverado and GMC Sierra applications, the forward driver side bracket attachment requires a modified procedure. Drill a 5/8 inch diameter hole in the frame rail at the lower bracket attachment point. Place one 1/2 inch wheel bolt in the 1/4 inch spacer (CM-SP50), then place this bolt assembly into the frame rail so the threaded end protrudes out through the frame rail. Bolt the bracket in place at this location. The remaining bolts are installed as normal.
Some 1997–04 Ford F-150 and F-250 installations (except HD F-250 and 2004 F-150 new body) may position the mounting rails so that attachment holes are drilled down through the front under bed support and the truck frame rail. On these applications, a tube spacer must be purchased separately. The angle brackets from the kit are used at the rear locations. The rear mounting rail should be located 26-3/4 inches from the rear edge of the bed.
Yes. If the truck is equipped with overload springs, the spring bracket on the side of the frame rail must be temporarily removed. Holes in the frame rail and spring brackets must be enlarged to accept 1/2 inch bolts. Use straight brackets on the front mounting rail and angled brackets at the rear. The rear spring bracket attachment points will require 3/8 inch thick spacers and longer 1/2 inch bolts, which are not supplied in the kit and must be purchased separately.
Before towing the first time, you must: (1) verify adequate turning clearance between the truck cab/box corners and trailer using the cab clearance calculation sheet on page 6; (2) verify truck bed clearance at various angles and maneuvering positions; and (3) verify all hardware is torqued to the proper specification (5/8 inch fasteners to 150 lb-ft, 1/2 inch fasteners to 75 lb-ft). Always physically check clearances prior to towing for the first time with a new vehicle, trailer, or 5th wheel hitch system.
Use the clearance calculation formula on page 6: [(A) - (C)] - D = X, where A is the distance from cab to 5th wheel coupler, C is the king pin overhang or extension (positive if under the trailer, negative if extending past), and D is half the trailer width. If X is positive, the trailer will not interfere with the cab. If X is negative, interference will occur. If a roller is used, the formula is [(A+B) - (C)] - D = X, where B is the additional roller travel (typically 12 inches for CURT rollers). Always physically verify clearances before towing.
Periodically check the hitch to ensure that all fasteners are tight and that all structural components are sound. The manual emphasizes this check before towing every time. Do not tow a trailer with worn or damaged parts. Regular inspection helps ensure safe operation and prevents fastener loosening due to vibration and movement during towing.
Do not exceed your vehicle manufacturer's recommended towing capacity. The CURT 16150 is a mounting kit and does not have its own capacity rating. Your truck's towing capacity is determined by the vehicle manufacturer and must be observed. Ensure the trailer weight does not exceed any part of your towing system, and be sure the load is heavier towards the front of the trailer while not exceeding the hitch tongue weight.
No. Do not tow more than one trailer at a time. This may cause loss of control. The CURT 16150 is designed for single-trailer towing only.
Before towing every time, you must: (1) ensure all fasteners are tight and all structural components are sound—do not tow with worn or damaged parts; (2) ensure the trailer weight does not exceed any part of your towing system, with load heavier towards the front of the trailer and not exceeding hitch tongue weight; (3) ensure trailer load is secured to prevent shifting and centered left to right—never load the trailer heavier behind the trailer axle(s); (4) check tires to ensure they are inflated to proper specification per vehicle and trailer recommendations; and (5) verify trailer lights, electric brakes, and breakaway switches are working properly.
Vehicle performance (braking, handling, acceleration, turning radius) can be drastically affected by the trailer. Allow additional time and space for stopping, changing lanes, passing, and turning. Severe bumps can damage your towing system, so avoid or drive slowly over rough terrain. The weight and aerodynamics of the trailer will significantly impact how your truck handles.
You need a drill with 5/8 inch and 17/32 inch drill bits, wrenches for 5/8 and 1/2 inch fasteners, and a torque wrench (150 lb-ft and 75 lb-ft). An air wrench is recommended. The fishwire (included) may be needed for bolt alignment.
Yes. You must drill four 5/8 inch holes through the truck bed and eight 17/32 inch holes through the frame rails. Frame rail holes must be exactly 17/32 inch diameter or bolts may break or not grip properly. Check below the bed and inside frame rails before drilling to ensure no wiring, brake lines, or obstructions are present.
Torque all 5/8 inch carriage bolts to 150 lb-ft and all 1/2 inch wheel bolts to 75 lb-ft. Use a torque wrench to ensure proper tightness.
There must be at least 52 inches between the hitch and the cab. On short bed trucks, a 5th wheel roller (such as CURT model 16560) is required if this clearance cannot be achieved. Always physically verify clearance before towing for the first time.
Verify adequate turning clearance between the truck cab and trailer using the clearance calculation sheet on page 6. Verify truck bed clearance at various angles. Verify all hardware is torqued to specification (5/8 inch to 150 lb-ft, 1/2 inch to 75 lb-ft). Always physically check clearances before towing.
Periodically check the hitch to ensure all fasteners are tight and all structural components are sound. Perform this check before towing every time. Do not tow with worn or damaged parts.
Check to ensure the mounting rails are parallel to each other and square. If not, loosen the 5/8 inch bolts and adjust the mounting rails until they are parallel and square. Also check that the 5th wheel legs are sitting vertically straight. If the legs are not vertical, it may be necessary to shim the 5th wheel legs by placing a washer between the leg and the 5th wheel head. After making adjustments, re-torque the 5/8 inch bolts to 150 lb-ft.
The frame rail holes may be drilled to the wrong diameter. Holes must be drilled exactly 17/32 inch diameter. If holes are too small, the bolt may break. If holes are too large, the bolt will not grip properly. Verify the hole diameter before installing bolts. If holes are incorrect, they must be re-drilled to the correct 17/32 inch diameter.
| Kit # | Base Rails Only # | Brackets & Hardware # | Capacity | Finish | Description |
|---|---|---|---|---|---|
| Base Rails & Brackets | |||||
| 16150 | -- | -- | 25,000 lbs. | Gloss black | Two rails, 4-bolt |
| 16100 | 16104 | 16101 | 25,000 lbs. | Gloss black | Two rails, 10-bolt |
| 16200 | 16204 | 16101 | 25,000 lbs. | Carbide black | Two rails, 10-bolt |
| -- | -- | 16205 | 40,000 lbs. | Teridium grey | Two rails, 10-bolt |
| Replacement Hardware | |||||
| 16111 | Installation hardware kit | ||||
| 16103 | Wheel bolts, qty 8 (for installing new brackets) | ||||
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