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8mm (5/16") Superline Black Winch Line - 21,700 lbs

  • Superline synthetic winch line with standard gusset tube thimble. Includes removable Velcro Rock Guard.
  • The optional sling hook has a large throat opening and heavy duty safety latch to maintain a secure connection with rigging.
  • The gusset tube thimble will not crush under load and accepts a shackle pin up to 7/8" diameter (3/4" shackle has a 7/8" diameter pin).
  • The gusset tube thimble has smooth, rounded edges and is compatible with soft shackles.
  • Universal drum attachment is low profile, strong, and designed to be compatible with almost every winch drum.
  • Includes hardware to install on Warn® Zeon® winches.
  • Includes hardware to install on side flange style drum connections.
5.00 LBS
Calculated at checkout


  1. Pre-stretched + heat-treated SK75 Black Dyneema® fiber core for ultimate tensile strength
  2. Bright orange, high heat resistant jacket on drum end offers best protection from drum heat and abrasion. Also indicates the last 12’ of line on the drum
  3. Universal drum attachment is low profile and strong
  4. Coated with polyurethane for added UV and chemical resistance
  5. Labeled with breaking strength and diameter
  6. Heavy duty tube thimble for superior eye protection
  7. Removable Rock Guard included for extra protection against chafe and wear


Diameter5/16" (8 mm)
Breaking Strength21,700 lbs (9,840 kg)
Recommended Winch Rating8,000 - 10,000 lb (3,630 - 4,540 kg)
MaterialPre-stretched + heat-treated Black Dyneema® SK75 synthetic fiber

Will This Fit My Winch?

The 5/16" Superline® Winch Line works best with winches ranging from 8,000 - 10,000 lbs. For more information on what length/diameter to choose please reference our Winch Line Guide.


If your travels take you far off the beaten path, you need to be able to depend on your gear to perform. When it comes to winching, the Superline® Winch Line will not let you down. Made with pre-stretched and heat-treated SK75 synthetic rope, it is the most advanced synthetic winch line on the market.

What makes the Superline® so super? Well first off, it’s pre-stretched and heat-treated construction gives it unparalleled strength. In the case of the 5/16” (8mm) Superline, the breaking strength is 21,700 lbs - that’s more than 4,000 lbs stronger than our 3/8" (9.5mm) Classic winch line! Not only does this increase safety, but it allows you to install a smaller diameter line on your winch so you save space on the drum and the winch works more efficiently. The Superline® also has excellent abrasion resistance and is coated with a heavy duty polyurethane coating for UV and chemical resistance. Combine that with only the highest quality hardware and high heat resistant Technora drum protection, and you have a winch line that is worthy of the toughest vehicle extractions.

The Superline® Black is the first synthetic winch line to utilize a new Dyneema® fiber, appropriately named Black Dyneema®. Originally, Dyneema® was only available in white and had to be coated to get any color. Unlike a coating, the black in Black Dyneema® is integral to the fiber, so it can’t wear off.


Over Other Synthetic Winch Lines

  • First synthetic winch line with Black Dyneema® fiber
  • Highest strength synthetic winch line available - 75% stronger on average
  • Use smaller diameter line without sacrificing strength - either gain winch efficiency or gain winch line length
  • Less stretch than normal SK75 winch lines
  • High grade hardware
  • Spliced in the USA

Over Steel Wire Rope

  • Safer than steel wire rope
  • Stronger than steel wire rope
  • Extremely lightweight makes it easy to use
  • Floats in water
  • Torque-free
  • No more cut hands from wire splinters or burrs
  • Will not kink like steel wire rope
  • Will not rust

Size Comparison

The high strength of the Superline® winch line allows you to install a smaller diameter line without sacrificing strength and take up less room on the winch drum. This has two main advantages:

  1. Your winch will work more efficiently. The further the winch line is from the center of the drum, the less pulling power the winch will have. Using a smaller diameter means that each layer of line is closer to the surface of the drum than a larger diameter line would be.
  2. In many winching scenarios it can be difficult to ensure the line is spooled on the winch neatly and the line can get bunched up on one area of the drum. This can allow the winch line to contact the winch housing or winch mounting plate, which can cause damage to the line or the winch itself.

Hover over the graphic below and you can see how much less room a 5/16” Superline® takes on a winch drum compared to our 3/8" Classic winch line. Note that the 5/16” Superline® is even 4,000 lbs stronger!

Side Note

Despite all the benefits that the Superline® Winch Line has over steel wire rope, the proper precautions must be taken when using synthetic rope for winching. Synthetic winch lines are more prone to chafe damage than wire rope, so ensure that the winch rope is rigged properly and isn’t rubbing on rocks, trees or other abrasive surfaces while under tension. This is why we developed our removable Rock Guard to protect the rope when you can’t avoid contact with abrasive surfaces. With proper use and care, the Superline® Winch Line will last just as long, if not longer than a steel wire rope. For more information on maintenance, visit our Synthetic Rope Maintenance page.

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Product Reviews

  1. Synthetic winch rope .

    Posted by Unknown on 19th Dec 2019

    First of all thank you master pull. Great people to work with great communication. I have not installed my winch rope yet still in a box but I got exactly what I asked for. And will be ordering other stuff too.

  2. Best Winch Cable

    Posted by Unknown on 11th Dec 2017

    I am impressed with the 5/16 Superline. It is very well made and is smaller in diameter and rated higher than my OEM Warn winch cable.