Fusion EL-FL651SPG Pair 6.5 Marine Boat Speaker Spacer Rings King Starboard – Heavy-Duty Adapter Ring Pair

Eliminate mounting clearance issues on your vessel with Fusion EL-FL651SPG Pair 6.5 marine boat speaker spacer rings King Starboard. These custom adapter rings are designed specifically for 6.5-inch Fusion EL Series LED speakers. They provide critical back-spacing to prevent speaker magnets from contacting internal bulkheads or wiring.

Each ring is precision CNC-milled in the USA using 100% genuine marine-grade King Starboard polymer. This high-density material withstands severe open-water conditions without degrading. It completely resists intense sunlight, saltwater spray, and high humidity without swelling or cracking over time. Installing this spacer pair provides a flush, vibration-free foundation. It protects your boat’s structure while delivering a clean, factory-style audio upgrade.

Key Features

• Custom Fusion 6.5″ Alignment: Precision-cut to match the exact frame outline and screw pattern of Fusion EL-FL651SPG speakers.

• 100% Marine-Grade King Starboard: High-density polymer that will not rot, swell, peel, or absorb moisture.

• Adds Mounting Clearance: Extends driver forward to prevent speaker magnets from hitting shallow internal bulkheads.

• Vibration-Dampening Build: Dense Starboard construction minimizes fiberglass flex and resonance for clearer sound.

• Custom Color & Edge Profiles: Available in marine white or black with smooth rounded edge profiles for a clean look.

Custom Fusion EL-FL651SPG Compatibility

These spacer rings are machined specifically for the Fusion EL-FL651SPG 6.5-inch driver frame. The exact cutout dimensions fit the speaker chassis without extra trim work. This custom alignment guarantees a flush fit. It also creates a tight gasket seal that prevents air and sound leakage around the baffle.

Marine-Grade King Starboard Resilience

Crafted from genuine UV-stabilized King Starboard, these mounting rings thrive in harsh open-water conditions. Standard wood and low-grade plastics warp or rot over time. In contrast, this durable polymer remains completely unaffected by salt spray, rain, and intense heat. Your installation stays solid season after season.

Solves Shallow Enclosure Limitations

Installing high-output 6.5-inch marine speakers often requires extra clearance behind the mounting surface. These adapter rings extend the driver forward into the open cabin space. This simple step protects speaker components from hitting internal fuel tanks, wiring runs, or fiberglass walls.

Acoustic Sealing & Vibration Reduction

Operating marine speakers at elevated volumes can cause thin fiberglass panels to flex and rattle. The solid King Starboard material acts as a rigid isolation barrier. It dampens panel vibration and anchors the speaker securely for tighter, punchier audio output.

Upgrade Your Marine Audio Today

Stop struggling with shallow mounting spaces on your vessel. Order your pair of Fusion EL-FL651SPG Pair 6.5 marine boat speaker spacer rings King Starboard adapters today. Enjoy precise driver fitment, total weather durability, and a sleek, professional finish on the water.

Fusion EL-FL651SPG (Pair) 6.5″ Marine Boat Speaker Spacer Rings King Starboard

Don’t have enough depth to install your speaker/subwoofer? Problem solved these spacer rings give you that extra space needed to mount your speaker/subwoofer.

What your getting and how to order

Frame Outer Diameter 6.9375″
Bolt Hole Circle Diameter ( 6) 6.13″
Mounting Hole Diameter 5.35″

-Select your thickness 1/4″,1/2″,3/4″ or 1″
-Select your edge profile (Straight, 1/8 Round, 1/4 Round)
-These are made with the best Starboard on the market King Plastics not that other cheap stuff
-We have been working with King Starboard for a very long time and we take pride in what we do

Don’t see a size you need?
Contact us and we would be more then happy to get you what you need, we make spacers for all brands and sizes.