Boat

Your boat may be one of your most prized possessions.

But towing your boat through off-road conditions — or simply leaving it unprotected — exposes it to stone and road debris that can damage the hull and its gel coat or painted aluminium finish. Stone chips, scuffs and general degradation of the surface occur, which not only looks unsightly but can also reduce the resale value of your watercraft.

Quality engineering and design protects your asset.

D-Flector stone guards are designed to protect your boat from stones and other road debris striking the hull of the watercraft when being towed. This helps maintain the pristine condition of your valuable asset at all times.

The marine-grade 316 stainless steel frame, fitted with removable covers, hugs the profile of the watercraft, giving it an added layer of safety while on the road. D-Flector stone guards provide the essential protection wherever your lifestyle takes you.

Why D-Flector

Advanced Stone Chip Protection™

Heavy-duty, double-weave PVC special-grade mesh offers optimal protection against stone chips and road debris, safely deflecting them to the ground. It shields the underside from saltwater and dust, with broad YKK zipper panels for easy access on all models.

Quick & Easy, Drill-Free Installation

No-drill, easy bolt-on installation using heavy-duty galvanised U-bolts — around 30 minutes to fit, with no compromise to your trailer's integrity.

Patented Adjustable Design

A unique adjustable bracket design can be tailored to different boat widths and specifications without any change to your core trailer body.

Extreme Durability & Reliability

Rigorously tested to Australian Design Rules (ADR 13/00, VSB 1, ADR 42) and international standards for vibration (ISO 16750-3:2007), salt spray (ASTM B117), stone chip resistance (ASTM D3170) and thermal cycling (IEC 60068-2) — built for real marine towing conditions, not just the showroom.

Unique Aerodynamic Design

Our modular stone guard frame, with heavy-duty joints and an adjustable design, fits all major boat brands. Its aerodynamic structure shields your vehicle while reducing drag for a smoother, quieter, more fuel-efficient journey.

Find the Right Fit for Your Boat

D-Flector Boat Stone Guards come in four sizes to match your boat length. The guard height should generally align with your boat's gunnel height for maximum protection, proper airflow and a clean finish.

Model	Boat Size	Width	Height	Best For
D400	Up to 4.5m	1600mm	1000mm	Compact boat protection, big on performance.
D500 🏆	4.5m – 5.5m	1600mm	1100mm	All-rounder shield for mid-size boats.
D600 🏆	5.5m – 6.5m	2200mm	1200mm	Heavy-duty guard for large marine rigs.
D700	6.5m – 8.5m	2200mm	1300mm	Ultimate protection for oversized marine loads.

Not sure which size you need? Use our fitment guide →

Need a spare part instead — mesh cover, bungee, U-bolt or bracket? Find your spare part →

Built to a Standard, Not a Price

🇦🇺 Designed, developed and manufactured in Australia
🔧 Patented technology (AU 2018241136 B2, US 10913382 B2)
🛡️ 3-year non-transferable warranty against defects in materials and workmanship
✅ ISO 9001:2015 quality-managed manufacturing
🏆 Australian Made Awards winner — 2023, 2024 & 2025
🏆 Best Advanced Stone Guard Protection Systems Manufacturer & Innovation Award in Caravan & Marine Protection — 2023, 2024 & 2025

Since 2007, D-Flector has been protecting caravans, campers, boats and jet skis on Australia's toughest roads — and standing behind every product we make.

Ready to Protect Your Boat?

Shop Boat Stone Guards Find Spare Parts

Frequently Asked Questions

What size guard do I need?

It depends on your boat's overall length — see the sizing table above. Guard height should generally align with your boat's gunnel height for the best fit and finish.