If you’re upgrading a dually truck, these polymer fenders offer one-piece durability, rust resistance, and easy mounting for dual rear wheels. This guide highlights five compatible options, explains who each is best for, and notes practical considerations for installation and fitment. Whether you’re outfitting a flatbed, dump bed, or utility truck, these selections are chosen for reliability, clear compatibility with 18″–19.5″ or 16″–17″ dual wheel setups, and straightforward mounting. Ideal buyers include fleet operators, roadside haulers, and DIY installers aiming for quick, durable fender coverage.
Summary of featured products
| Product | Best For | Wheel Fit | Notes |
|---|---|---|---|
| Buyers Products (2) 8590196-x2 Polymer Fenders | Fleet-Ready Replacement | 18″–19.5″ dual wheels | Brackets sold separately |
| 2 + 2, Buyers Products (2) 8590196-x2 Fenders + (2) 8591000-x2 Brackets | All-in-One Mounting | 18″–19.5″ dual wheels | Includes mounting brackets |
| Mytee Products 2 Pc Poly Fender Kit | Flatbed/Dump Truck Upfit | 24.5″ dual wheels | Ribbed poly design, rust-proof |
| BP 8590195-x2 + 8591000-x2 Kit | Simple Replacement Set | 18″–19.5″ dual wheels | Two smooth polymer fenders with brackets |
| 2 + 2, BP 8590017-x2 Fenders + 8591000-x2 Brackets | 16″–17″ Dual Wheels | 16″–17″ dual wheels | Compact option for narrower wheel setups |
Buyers Products (2) 8590196-x2 Polymer Fenders
Best for quick fleet replacements where brackets are later added. These polymer fenders provide consistent coverage for trucks with 18″ to 19.5″ dual rear wheels. They are lightweight and resist corrosion, making them suitable for frequent use in harsh environments. Best for fleets that already have mounting brackets or plan to purchase them separately. Caution: mounting brackets are not included, so plan a separate purchase if needed.
2 + 2, Buyers Products (2) 8590196-x2 Fenders and (2) 8591000-x2 Brackets
Choose this all-in-one kit for a streamlined install on trucks with 18″–19.5″ dual rear wheels. Including mounting brackets reduces supplier gaps and simplifies compatibility checks. Best for commercial operators seeking a balanced bundle with fewer separate purchases. Limitation: ensure the brackets match your mounting points and bed configuration to avoid fit issues.
Mytee Products 2 Pc Poly Fender Kit
This kit is designed for 24.5″ dual rear wheel setups, making it a solid match for larger flatbed and dump trucks. The ribbed poly design adds torsional strength while keeping weight low. Best for operators needing robust coverage on wider dually wheels. Caution: ensure wheel width and mounting points align with your truck’s frame to avoid clearance issues with tires or suspension components.
BP 8590195-x2 + 8591000-x2 Kit
Best for a straightforward replacement set on 18″–19.5″ dual wheel trucks. This option includes smooth polymer fenders paired with mounting brackets for a cohesive install. Better for users who want a reliable, paired solution without hunting down compatibility parts separately. Limitation: may require precise alignment during mounting to prevent rub against tires or frame components.
2 + 2, BP 8590017-x2 Fenders + 8591000-x2 Brackets
Choose this option for 16″–17″ dual wheel configurations where space is tighter but durability is still required. It pairs compact fenders with mounting brackets to fit smaller dual setups. Best for mid-size trucks or upfit projects with narrower wheel wells. Caution: confirm wheel diameter compatibility before purchase to avoid overhang or misfitment.
Buying Guide
What should you consider when selecting dually fenders for a fiberglass truck? Start with wheel size compatibility. The most common ranges here are 16″–17″ and 18″–19.5″ dual wheel setups. Next, assess whether mounting brackets are included. Kits that bundle brackets simplify installation and reduce part mismatches. Material matters: polymer fenders are lightweight and rust-resistant, but some designs add ribbing or smooth surfaces for different impact resistance and aesthetics. Consider bed type (flatbed vs standard) and clearance around tires, frame rails, and any underbody components.
Installation considerations include mounting point alignment, bracket compatibility with existing hardware, and the need for weatherproof fasteners. For fleets, a two-piece or kit with brackets can minimize downtime. For individual upfitters, ensure the screw patterns and holes line up with your truck’s frame. If you operate in extreme conditions, ribbed or reinforced polymer fenders may offer better scuff resistance and impact durability.
FAQ
- Which fender is best for 18″–19.5″ dual wheels? The options labeled for 18″–19.5″ dual wheels are designed to fit that size range, with or without included brackets depending on the kit.
- Do the kits with brackets save installation time? Yes. Bundled brackets reduce the need to source matching hardware separately and help ensure proper alignment.
- Are polymer fenders rust-proof? Yes. Polymer bodies resist rust and corrosion, making them long-lasting in harsh environments.
- Should I choose ribbed or smooth Fender designs? Ribbed designs generally offer added stiffness and impact resistance; smooth designs may provide a sleeker look and easier cleaning.
- Can these fenders fit fiberglass trucks specifically? Many fiberglass truck builds use standard mounting patterns; always verify compatibility with your bed, frame, and mounting points before purchase.
- What if my wheel setup is 16″–17″ dual wheels? Look for options explicitly listing 16″–17″ compatibility, such as the BP 8590017-x2 pairing, to ensure proper fit and clearance.