Stinger RKFR6 6.5" RoadKill Fast Rings

Stinger RKFR6 Roadkill Fast Rings for 6.5" Speakers (Pair)

A 3-ring self-adhesive foam speaker mounting system for 6.5-inch speakers reduces front/rear wave cancellation, improves mid-bass response, and maximises speaker output efficiency. Sold as a pair (6 rings total).

Product Overview

The Stinger RKFR6 is a pair of Roadkill FAST Ring kits for 6.5-inch speakers. Each kit contains three foam rings designed to work together to address the most common acoustic problems encountered in factory speaker locations:

1. Gasket ring: Sits between the speaker basket and the mounting baffle surface, sealing the gap and stopping rear wave energy escaping through the mounting hole.
2. Surround ring: Mounts around the outer edge of the speaker to stop speaker-to-door vibration transfer and prevent resonance from the door panel.
3. Backwave pad: A circular foam pad that sits behind the speaker inside the door cavity to absorb unwanted reflections from hard surfaces such as inner door skins.

Self-adhesive backing on all rings — clean, peel, and stick. Each ring can be trimmed to size with scissors or a knife if required.

Features & Benefits

• Reduces front and rear wave cancellation
• Increases mid-bass response and audio output efficiency
• Minimises destructive wave interference from open door cavities
• Reduces door panel vibration transmission to the speaker
• 3-ring system: gasket + surround + backwave pad per speaker
• Self-adhesive peel-and-stick application
• Trimmable to suit different speaker mounting configurations
• Sold as a pair — suits two speakers

Technical Specs

Compatible With / Goes Well With

Direct Vehicle Fit:

• Universal — suits any vehicle with up to 6.5-inch speaker mounting locations

Goes Well With:

• 6.5-inch aftermarket component or coaxial speakers
• Stinger Roadkill Expert sound damping sheets (apply to door skin before installing Fast Rings)
• Stinger RKCP12 carpet foam pad (for full vehicle noise treatment)
• Stinger RKINSTALL installation kit (knife for trimming rings to shape)

Frequently Asked Questions

What is front/rear wave cancellation and how do Fast Rings prevent it?

When a speaker produces sound, it radiates waves from both the front (into the cabin) and the rear (into the door cavity). If the rear wave escapes back through gaps around the speaker mounting, it travels back and cancels out the front wave — reducing bass and midrange output. The RKFR6's gasket and surround rings seal these gaps, keeping the rear wave contained in the door cavity and preventing cancellation.

How do I install the Fast Rings?

Clean the mounting surface with wax and grease remover and allow it to dry fully. Peel the backing from each ring and press firmly onto the appropriate surface — gasket to the baffle plate, surround around the speaker opening, and backwave pad behind the speaker. Trim any ring to size with scissors or a knife if required.

Do I need to apply Roadkill Expert sheets to the door before using Fast Rings?

No, but it is recommended. Applying Roadkill Expert to the door skin first reduces panel resonance, and the Fast Rings then optimise the speaker's acoustic interface with the door. Used together, the improvement in sound quality is significantly greater than either product alone.

Are the rings compatible with speakers smaller than 6.5 inches?

Yes. The RKFR6 is listed for "6.5 inches or less" — the rings can be trimmed to suit smaller speaker sizes with scissors or a knife.

How many speakers does one pack cover?

The RKFR6 is sold as a pair — it includes enough rings for two speakers (6 rings total: 2× gaskets, 2× surrounds, 2× backwave pads), covering one stereo speaker pair.