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5th Wheels & Accessories

4 State Trucks offers a diverse selection of durable fifth wheel assemblies and accessories, including plates and ramps, designed to maintain a secure connection between your truck and trailer. These commercial-grade components provide the reliability and performance needed to withstand harsh road conditions and frequent use.
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • 370 Slack Reducing Coupling

    370 Slack Reducing Coupling

    PREMIER

    $776.99
    370 Slack Reducing Coupling* High Quality Slack Reducing Coupling* Max. Gross Trailer Weight 90000 Lbs.* Max. Tongue Weight 18000 Lbs.* Ultimate Latch Capacity 20000 Lbs.* Max. Eye X-Section 1-13/16...
    09-051100686
    SKU:
    09-051100686
    Rating:
    90000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $776.99
    Qty in Cart: 0
    Price:
    $776.99
    Subtotal:
  • 270 Coupling Replacement Part Kit

    270 Coupling Replacement Part Kit

    PREMIER

    $260.99
    Coupling Part Kit W/ Latch, Pawl, Spring, Set Screw, Bolt, Locknut, Pin, Retaining Rings* High Quality Coupling Replacement Parts Kit* Includes:  - Latch - Pawl - Spring - Set Screw - Bolt -...
    09-051100685
    SKU:
    09-051100685
    Truck Class:
    Universal
    Location:
    Made In USA
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $260.99
    Qty in Cart: 0
    Price:
    $260.99
    Subtotal:
  • 270 Low Profile Slack Reducing Coupling

    270 Low Profile Slack Reducing Coupling

    PREMIER

    $792.99
    270 Low Profile Slack Reducing Coupling* High Quality Slack Reducing Coupling Kit * Includes: - Coupling - Bolt Kit - Air Chamber - Air Chamber Adapter Bracket - Thimble* Max. Gross Trailer Weight...
    09-051100684
    SKU:
    09-051100684
    Rating:
    90000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $792.99
    Qty in Cart: 0
    Price:
    $792.99
    Subtotal:
  • 270 Slack Reducing Coupling

    270 Slack Reducing Coupling

    PREMIER

    $617.99
    270 Slack Reducing Coupling* High Quality Slack Reducing Coupling* Max. Gross Trailer Weight 90000 Lbs.* Max. Tongue Weight 18000 Lbs.* Ultimate Latch Capacity 12000 Lbs.* Max. Eye X-Section 1-13/16...
    09-051100683
    SKU:
    09-051100683
    Rating:
    90000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $617.99
    Qty in Cart: 0
    Price:
    $617.99
    Subtotal:
  • 2880ELA Slack Reducing Coupling Kit

    2880ELA Slack Reducing Coupling Kit

    PREMIER

    $1,777.99
    2880ELA Slack Reducing Coupling Kit* High Quality Reducing Coupling Kit* Includes:  - Coupling - Bolt Kit - Air Chamber - Air Chamber Adapter Bracket  - Thimble* Max. Gross Trailer Weight 150000 Lbs...
    09-051100682
    SKU:
    09-051100682
    Rating:
    150000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1,777.99
    Qty in Cart: 0
    Price:
    $1,777.99
    Subtotal:
  • 28880EL Slack Reducing Coupling

    28880EL Slack Reducing Coupling

    PREMIER

    $1,583.99
    28880EL Slack Reducing Coupling* High Quality Reducing Coupling* Max. Gross Trailer Weight 150000 Lbs.* Max. Tongue Weight 30000 Lbs.* Ultimate Latch Capacity 60000 Lbs.* Max. Eye X-Section 1-13/16...
    09-051100681
    SKU:
    09-051100681
    Rating:
    150000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1,583.99
    Qty in Cart: 0
    Price:
    $1,583.99
    Subtotal:
  • 2880A Slack Reducing Coupling Kit

    2880A Slack Reducing Coupling Kit

    PREMIER

    $1,641.99
    2880A Slack Reducing Coupling Kit* High Quality Reducing Coupling Kit* Includes:  - Coupling - Bolt Kit - Air Chamber - Air Chamber Adapter Bracket  - Thimble* Max. Gross Trailer Weight 150000 Lbs.*...
    09-051100680
    SKU:
    09-051100680
    Rating:
    150000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1,641.99
    Qty in Cart: 0
    Price:
    $1,641.99
    Subtotal:
  • 2880 Slack Reducing Coupling

    2880 Slack Reducing Coupling

    PREMIER

    $1,415.99
    2880 Slack Reducing Coupling* High Quality Reducing Coupling* Max. Gross Trailer Weight 150000 Lbs.* Max. Tongue Weight 30000 Lbs.* Ultimate Latch Capacity 60000 Lbs.* Max. Eye X-Section 1-13/16...
    09-051100679
    SKU:
    09-051100679
    Rating:
    150000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1,415.99
    Qty in Cart: 0
    Price:
    $1,415.99
    Subtotal:
  • 2400HEL Slack Reducing Coupling Kit

    2400HEL Slack Reducing Coupling Kit

    PREMIER

    $1,149.99
    2400HEL Slack Reducing Coupling Kit* High Quality Reducing Coupling Kit* Kit Includes: - Coupling - Bolt Kit - Air Chamber - Air Chamber Adapter Bracket  - Thimble* Max. Gross Trailer Weight 100000...
    09-051100678
    SKU:
    09-051100678
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1,149.99
    Qty in Cart: 0
    Price:
    $1,149.99
    Subtotal:
  • 2400HEL Slack Reducing Coupling

    2400HEL Slack Reducing Coupling

    PREMIER

    $1,000.99
    2400HEL Slack Reducing Coupling* High Quality Slack Reducing Coupling* Max. Gross Trailer Weight 100000 Lbs.* Max. Tongue Weight 20000 Lbs.* Ultimate Latch Capacity 60000 Lbs.* Max. Eye X-Section...
    09-051100677
    SKU:
    09-051100677
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1,000.99
    Qty in Cart: 0
    Price:
    $1,000.99
    Subtotal:
  • 2400H Slack Reducing Coupling Kit

    2400H Slack Reducing Coupling Kit

    PREMIER

    $975.99
    2400H Slack Reducing Coupling* High Quality Reducing Coupling Kit* Includes: - Coupling - Bolt Kit - Air Chamber - Air Chamber Adapter Bracket  - Thimble* Max. Gross Trailer Weight 100000 Lbs.* Max...
    09-051100676
    SKU:
    09-051100676
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $975.99
    Qty in Cart: 0
    Price:
    $975.99
    Subtotal:
  • 2400H Slack Reducing Coupling

    2400H Slack Reducing Coupling

    PREMIER

    $817.99
    2400H Slack Reducing Coupling* High Quality Reducing Coupling* Max. Gross Trailer Weight 100000 Lbs.* Max. Tongue Weight 20000 Lbs.* Ultimate Latch Capacity 60000 Lbs. * Max. Eye X-Section 1-13/16...
    09-051100675
    SKU:
    09-051100675
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $817.99
    Qty in Cart: 0
    Price:
    $817.99
    Subtotal:
  • 2400ELA Slack Reducing Coupling Kit

    2400ELA Slack Reducing Coupling Kit

    PREMIER

    $1,125.99
    2400ELA Slack Reducing Coupling Kit* High Quality Reducing Coupling Kit* Includes:  - Coupling - Bolt Kit - Air Chamber - Air Chamber Adapter Bracket  - Thimble* Max. Gross Trailer Weight 100000 Lbs...
    09-051100674
    SKU:
    09-051100674
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1,125.99
    Qty in Cart: 0
    Price:
    $1,125.99
    Subtotal:
  • 2400EL Slack Reducing Coupling

    2400EL Slack Reducing Coupling

    PREMIER

    $970.99
    2400EL Slack Reducing Coupling* High Quality Reducing Coupling* Max. Gross Trailer Weight 100000 Lbs.* Max. Tongue Weight 20000 Lbs.* Ultimate Latch Capacity 60000 Lbs.* Max. Eye X-Section 1-13/16...
    09-051100673
    SKU:
    09-051100673
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $970.99
    Qty in Cart: 0
    Price:
    $970.99
    Subtotal:
  • 2400A Slack Reducing Coupling Kit

    2400A Slack Reducing Coupling Kit

    PREMIER

    $995.99
    2400A Slack Reducing Coupling Kit* High Quality Reducing Coupling Kit* Includes: - Coupling - Bolt Kit - Air Chamber - Air Chamber Adapter Bracket  - Thimble* Max. Gross Trailer Weight 100000 Lbs.*...
    09-051100672
    SKU:
    09-051100672
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $995.99
    Qty in Cart: 0
    Price:
    $995.99
    Subtotal:
  • 2400 Slack Reducing Coupling

    2400 Slack Reducing Coupling

    PREMIER

    $770.99
    2400 Slack Reducing Coupling* High Quality Reducing Coupling* Max. Gross Trailer Weight 100000 Lbs.* Max. Tongue Weight 20000 Lbs.* Ultimate Latch Capacity 60000 Lbs.* Max. Eye X-Section 1-13/16...
    09-051100671
    SKU:
    09-051100671
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $770.99
    Qty in Cart: 0
    Price:
    $770.99
    Subtotal:
  • 2300ELA Slack Reducing Coupling Kit

    2300ELA Slack Reducing Coupling Kit

    PREMIER

    $1,077.99
    2300ELA Slack Reducing Coupling Kit* High Quality Reducing Coupling Kit* Includes:  - Coupling - Bolt Kit - Air Chamber - Air Chamber Adapter Bracket  - Thimble* Max. Gross Trailer Weight 100000 Lbs...
    09-051100670
    SKU:
    09-051100670
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1,077.99
    Qty in Cart: 0
    Price:
    $1,077.99
    Subtotal:
  • 2300EL Slack Reducing Coupling W/ Extended Life Latch

    2300EL Slack Reducing Coupling W/ Extended Life Latch

    PREMIER

    $916.99
    2300EL Slack Reducing Coupling W/ Extended Life Latch* High Quality Slack Reducing Coupling* Max. Gross Trailer Weight 100000 Lbs.* Max. Tongue Weight 20000 Lbs.* Ultimate Latch Capacity 60000 Lbs.*...
    09-051100669
    SKU:
    09-051100669
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $916.99
    Qty in Cart: 0
    Price:
    $916.99
    Subtotal:
  • 2300 Slack Reducing Coupling Kit

    2300 Slack Reducing Coupling Kit

    PREMIER

    $928.99
    2300 Slack Reducing Coupling Kit* High Quality Slack Reducing Coupling Kit* Includes:  - Coupling - Bolt Kit - Air Chamber - Air Chamber Adapter Bracket - Thimble* Max. Gross Trailer Weight 100000...
    09-051100668
    SKU:
    09-051100668
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $928.99
    Qty in Cart: 0
    Price:
    $928.99
    Subtotal:
  • 2300 Slack Reducing Coupling

    2300 Slack Reducing Coupling

    PREMIER

    $709.99
    2300 Slack Reducing Coupling* High Quality Slack Reducing Coupling* Max. Gross Trailer Weight 100000 Lbs.* Max. Tongue Weight 20000 Lbs.* Ultimate Latch Capacity 60000 Lbs.* Max. Eye X-Section...
    09-051100667
    SKU:
    09-051100667
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $709.99
    Qty in Cart: 0
    Price:
    $709.99
    Subtotal:
  • Total: items /

Adding your products to cart

Shop Holland, JOST or Fontaine 5th Wheel Products

Replace and upgrade your fifth wheel top plate assembly with sturdy aftermarket parts. Filter by popular 5th wheel brands like Holland, JOST, or Fontaine. It’s easy to restore clunk, slack, and vibration with relevant 5th wheel accessories. Add more security with kingpin locks or grab a slider and hinge hardware for better accessibility.

Add Quality 5th Wheel Top Plates & Replacement Hardware

- Lube plates: Reduce friction between the kingpin and hitch plate. - Kingpin locks: Protect your trailer when left unattended. - Pins, clips, and wedges: Keep parts tight and properly aligned. - Rotating pin boxes: Improve turning radius and eliminate harsh angles. - Safety chain loops: Add extra security for your trailer. - Pads and cushions: Minimize wear and absorb shock during towing. - Storage solutions: Keep your hitch accessories organized on or off the road. Whether you’re looking for replacement trailer parts, 5th wheel storage options, or performance accessories, you’ll find reliable options designed to fit your make/model.

How to Choose the Right Semi Truck Fifth Wheel

Start with Your Goal: Replace the top plate/assembly (cracks, binding, worn lock jaw, excessive wear). Reduce clunk/slack (coupling kits, slack reducers, cushions). Improve sliding performance (slider bracket/pins, low-lube plates). Increase security (kingpin locks, safety chain loops). Confirm the Fitment: Do you have a slider (adjustable) or a fixed (rigid) fifth wheel? Is it an air release or manual release (if you’re upgrading)? Are there visible wear points (jaw, wedge, pivot/hinge points)? Remember, you can also purchase inboard or outboard styles, a standard profile or low profile configuration, and various slide bracket sizes depending on whether you have an older, cast-iron style 5th wheel or a lightweight newer model. Need some tips on how to select the right product? Learn about 5th wheel differences in trucks, or call our team for specific in-stock product information.

Frequently Asked Questions About 5th Wheels & Accessories

How do I know which fifth wheel hitch is right for my truck and trailer setup?

The right fifth wheel depends on your truck's frame and rail configuration, the gross combined weight rating you need to support, and the type of trailer you're pulling. Check your truck manufacturer's specifications for compatible mounting systems, and compare that against the weight capacity and kingpin design of the fifth wheel you're considering. If you're unsure, our team can help match a unit to your specific application.

What is the difference between a sliding and a fixed fifth wheel?

A fixed fifth wheel stays in one position on the frame, while a sliding fifth wheel can move forward or backward to adjust weight distribution across the axles. Sliding models offer more flexibility for varying trailer lengths and axle weight requirements, but they typically involve more moving parts to maintain. Your choice should be based on how often you need to adjust axle loads and the type of hauling you do.

How often should I grease or maintain my fifth wheel?

Regular greasing of the fifth wheel plate is essential to reduce wear between the truck and trailer connection and to keep the coupling operating smoothly. Most manufacturers recommend greasing at every trailer hookup or at set mileage intervals, so check your specific fifth wheel's documentation for exact guidance. Routine inspection of the locking mechanism, pivot points, and mounting hardware should be part of the same maintenance schedule.

What accessories are commonly used alongside a fifth wheel?

Common accessories include fifth wheel grease, locking pin covers, air-operated release cables, safety latches, and mounting brackets or rail kits. These accessories help improve ease of use, extend the life of the fifth wheel, and support proper installation. Selecting accessories designed for your specific fifth wheel model helps ensure they fit and function correctly.

Can I install a fifth wheel myself, or should I have it professionally installed?

Installation involves precise mounting to the truck frame and correct alignment with the kingpin, so many owners choose to have this done by a qualified technician or shop with the right lifting equipment. If you have experience with heavy-duty truck components and access to proper tools, self-installation is possible, but improper mounting can affect towing safety and performance. Always follow the manufacturer's installation instructions and torque specifications regardless of who performs the install.


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