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Tie Down Engineering 86117 4 ft. Galvanized Roller Bunk Kit - Pair

Manufacturer

Tie Down Eng

<h3>Engineering Excellence for Trailer and Marine Applications</h3> <p>Since 1969, Tie Down Engineering has built a reputation as one of America's premier manufacturers of trailer components and marine accessories. Based in Atlanta, Georgia, this family-owned company operates from a massive 825,000-square-foot facility where advanced manufacturing technologies meet traditional American craftsmanship. With over 95 patents and more than 7,000 products in their portfolio, Tie Down Engineering represents decades of practical innovation designed to solve real-world challenges for boat owners, trailer operators, and commercial customers.</p> <p>What sets Tie Down Engineering apart is their commitment to in-house engineering and manufacturing. From CNC cutting and robotic welding to powder coating and rigorous testing, every product is designed and built in the United States. Their ISO 9001:2015 certification ensures that quality control standards remain consistently high across all product lines. This vertical integration allows the company to maintain strict oversight of materials, processes, and performance—critical factors when products must withstand demanding marine environments, heavy loads, and years of outdoor exposure.</p> <h3>Comprehensive Trailer Protection and Components</h3> <p>Tie Down Engineering specializes in critical trailer components that keep boats and cargo safe on the road. Their extensive selection of <a href="/6667-tie-down-eng-fenders-mounting-hardware-200397">fenders and mounting hardware</a> includes innovative bracket-less designs that simplify installation and provide clean, professional aesthetics. These high-density polyethylene fenders are engineered to resist UV degradation, impact damage, and harsh weather conditions, making them ideal for saltwater and freshwater applications alike. The company's <a href="/6667-tie-down-eng-fender-1380">fender</a> offerings accommodate various wheel sizes and trailer configurations, with reinforced construction that provides long-term durability even under demanding use.</p> <p>Safety remains paramount in trailer operation, which is why Tie Down Engineering produces robust <a href="/6667-tie-down-eng-safety-chains-cables-accessories-200888">safety chains, cables, and accessories</a> engineered to meet or exceed industry safety standards. These components serve as critical backup systems that protect against coupler failure, providing peace of mind during highway travel and boat launching. The company also offers a range of <a href="/6667-tie-down-eng-electronic-accessories-145">electronic accessories</a> and comprehensive <a href="/6667-tie-down-eng-trailer-parts-accessories-201094">trailer parts and accessories</a> that address everything from lighting and wiring to rollers, guide-ons, and mounting hardware. Each component is designed to integrate seamlessly with standard industry specifications, simplifying replacement and upgrade projects.</p> <h3>Built for the Marine Environment</h3> <p>Tie Down Engineering understands the unique demands of marine applications, where corrosion resistance and reliability are non-negotiable. Their trailer components are specifically engineered to withstand saltwater exposure, boat ramp immersion, and the constant moisture inherent in boating activities. Many products feature galvanized or aluminum construction, corrosion-resistant coatings, and sealed bearing systems that extend service life even in the harshest coastal environments. This attention to material science and protective finishes has made Tie Down Engineering a trusted name among boat dealers, marinas, and individual boat owners who demand components that won't fail when it matters most.</p> <p>The company serves diverse industries beyond marine and trailer applications, including manufactured housing, roofing, workplace safety, and agriculture. This broad manufacturing expertise translates into cross-industry innovations that benefit all product lines. Whether you're maintaining a boat trailer, upgrading safety equipment, or replacing worn components, Tie Down Engineering delivers the combination of American manufacturing quality, engineering innovation, and practical design that professionals and enthusiasts rely on for dependable performance season after season.</p>

Part Number

86117
06/23/2036 4:48 AM
Sale Price

$387.74

2 left at this price

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Usually delivered within 2 days

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Product Details

The Tie Down Engineering 86117 is a 4-foot galvanized roller bunk kit designed to replace traditional bunk boards on boat trailers. Sold as a pair, these roller bunks deliver reliable, non-marking hull support during trailering and storage, making loading and launching smoother and easier.

Key Features:

  • Heavy-duty galvanized steel frame provides full hull support and long-lasting corrosion resistance
  • Non-marking black rubber rollers protect your hull's gel coat and finish during loading and transport
  • Vertical adjustability allows the bunk height to be fine-tuned to match your boat's hull profile
  • Sold as a pair with a combined load capacity of 1,200 lbs.
  • Compatible with optional bolster support swivel brackets for enhanced fit across various hull shapes and sizes
  • Mounting hardware not included — 8" Bolster Swivel Brackets (part #81210) are required for installation and sold separately

These roller bunks are a direct upgrade over traditional carpet-covered bunk boards, reducing friction during launch and retrieval while providing consistent hull support. Compatible swivel bracket part numbers include 81215, 81220, and 86160.

Delivered quickly as promised!

Great prices and great selection

Quick and easy to order, fast shipping sealed the deal

Tires were as advertised, quick delivery overall great experience

Had what I needed, quick and easy!

Everything was seamless and smooth. Zero issues.

Could not get ground shipping and drop shipping insurance.

Shipping was fast and efficient! Very happy that the fuel pump I ordered was available and arrived in perfect condition. This was a quality fuel pump that was difficult to find and was very pleased with the procurement of my order. I will use THMotorsports again! Thank you.

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