Direct answer: these tandem axle trailer fenders with back plates are designed to protect dual-wheel setups, reduce road debris impact, and simplify installation for do-it-yourself trailer projects. This guide highlights five strong options, explaining who each is best for and why. If you’re upgrading a tandem trailer, choose based on material, backplate quality, and installation method to match your welding capabilities and aesthetics.
Buyer’s quick-summary table:
- 2 Pack – 72×10.75 Tandem Axle Steel Trailer Fenders with Back Plate — Best value, steel strength, weld-back compatibility.
- RecPro Tandem Axle Fender | Diamond Plate | 2 Fenders — Best industrial look, durable 14-gauge steel, bolt-on installation.
- D2E Trailers Tandem Double Break Treadplate Fender (1 Each) 10x72x19 w/ 16 Ga Smooth Backplate — Best for classic treadplate styling, lighter backplate option.
- Set of (2) Tandem Trailer Axle Fender Backs for 9×72 & 10×72 Fenders — Best for custom backplate finishing, weld-on compatibility.
- 2 Pack Heavy-Duty Smooth Steel Tandem Teardrop Fenders (72″L x 10″W x 20″H) with Fender Backs — Best for modern teardrop design and overall protection.
2 Pack – 72×10.75 Tandem Axle Steel Trailer Fenders with Back Plate
Features: 72″x10.75″x20″, 2 Pack, 16-Gauge Steel.
Best for: Slightly larger tandem setups needing sturdy, bolt-ready steel fenders with back plates for reliable protection and a straightforward installation. Ideal for DIY installers seeking a balance of affordability and durability.
Why selected: Includes back plates and a generous size, making it a practical all-around option for common tandem trailers. The 16-gauge steel provides solid protection against road debris.
Caution: Confirm compatibility with your trailer’s mounting hardware and ensure adequate clearance for wheel and tire combos before ordering.
RecPro Tandem Axle Fender | Diamond Plate | 2 Fenders
Features: Built to last with 14 gauge steel; diamond plate tread and black finish; bolt-on installation.
Best for: Trailer owners wanting a tough, industrial look with extra protection and quick bolt-on mounting. The diamond plate adds style and abrasion resistance, suitable for work trailers.
Why selected: The 14-gauge steel offers robust protection, while the design supports easy installation without welding, appealing to renters and hobbyists who need a ready-to-install option.
Caution: Bolt-on installation requires compatible mounting points; check your trailer’s existing holes or mounting plan before purchase.
D2E Trailers Tandem Double Break Treadplate Fender (1 Each) 10x72x19 w/ 16 Ga Smooth Backplate
Features: 10x72x19 with 16 GA smooth backplate; treadplate finish; single fender per order.
Best for: Trailer owners who prefer treadplate styling and a straightforward, durable option for tandem axles. Suitable for lighter or mid-weight trailers that need a traditional look.
Why selected: The treadplate surface provides a classic aesthetic and durable protection, while the 16-gauge backplate supports structural stability during use.
Caution: This listing notes potential backplate tacking and handling considerations; verify fit with your trailer’s frame and mounting hardware requirements.
D2E Trailers Tandem Double Break Treadplate Fender (1 Each) 10x72x19 w/ 14 Ga Treadplate Backplate
Features: 10x72x19, 14 GA treadplate backplate; 1 fender per order.
Best for: Builders who want a robust backplate option with a heavier gauge backplate for added durability on rugged roads.
Why selected: The heavier 14-gauge backplate delivers enhanced support for the fender area, which can reduce flex and wear on long trips.
Caution: Similar to other D2E options, merge compatibility with your mounting hardware and ensure weld-on requirements or mounting hardware availability.
Set of (2) Tandem Trailer Axle Fender Backs for 9×72 & 10×72 Fenders
Features: Heavy-duty steel, 16-gauge thickness; weld-on installation; designed to fit 9×72 and 10×72 fenders; non-painted surfaces for custom coating.
Best for: Professionals or DIYers who want to customize the final finish and need weld-on fender backs to ensure a secure and seamless look.
Why selected: This set provides precise fitment and install-ready backing, enabling stronger structural support where the fenders attach to the trailer.
Caution: Requires welding; not a bolt-on solution. Ensure you have welding equipment or access to a welder, and properly prepare surfaces before installation.
2 Pack Heavy-Duty Smooth Steel Tandem Teardrop Fenders for Double Axle Trailer
Features: 72″L x 10″W x 20″H; 16-gauge smooth steel; includes Fender Backs; teardrop design.
Best for: Trailer owners wanting a modern teardrop silhouette with strong steel protection, good for both utility and aesthetics on dual-axle units.
Why selected: The teardrop shape improves aerodynamics and looks contemporary while providing substantial coverage for dual tires.
Caution: Verify back plate compatibility and ensure mounting points align with your trailer frame; some installations may require welding or customized backing.
Buying Guide — Key Considerations for Tandem Axle Fender Back Plates
- Backplate Type: Smooth vs treadplate backplates affect durability and mounting. Weld-on backs provide a permanent, clean look, while bolt-on backs offer easier removal.
- Gauge and Material: Heavier gauges (14–16 GA) resist impact and bending on rough roads but add weight. 16-gauge is a common balance for DIY installs.
- Finish and Look: Diamond plate or treadplate surfaces add abrasion resistance and a rugged appearance. Black powder coats are common for corrosion resistance.
- Installation Method: Bolt-on is user-friendly but may require matching holes. Weld-on backs deliver a seamless, secure mount but require welding.
- Dimensional Fit: Confirm length, width, and height (e.g., 72x10x20) match your trailer’s fender space and wheel/tire dimensions.
- Compatibility: Check axle spacing (dual axles), fender width, and whether back plates align inside or behind the fender lip for clearance with tires and suspension.
- Finish Compatibility: Some back plates ship unpainted; plan for coating to prevent corrosion on exposed steel.
Frequently Asked Questions
- What is a back plate on a trailer fender? A back plate is a supporting panel or backing that reinforces the fender against bending or impact and helps mount the fender securely to the trailer.
- Are weld-on fenders harder to install than bolt-on? Yes, weld-on fenders require welding, which needs proper equipment and skill, but they often provide a cleaner, more permanent mount.
- What gauge is best for trailer fenders? 14–16 gauge steel is common; 16 gauge is a typical choice for a balance of durability and weight.
- Can I mix fender back plates from different brands? Mixing may be possible if dimensions and mounting points align; verify fit and clearance before installation.
- Do fenders with diamond plate offer more protection? Diamond plate adds abrasion resistance and a rugged appearance, but core protection comes from the fender’s overall gauge and design.
- What should I do about surface rust on backplates? If rust appears, treat and coat the back plate to prevent progression, especially on untreated or unpainted steel.