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Stinger Roadkill RKFR6 FAST Rings

6-piece foam baffle kit — enhance the sound of your new 6", 6-1/2", or 6-3/4" speakers

36 Reviews

Overview

Our take on the Stinger Roadkill RKFR6 FAST Rings

You bought some nice 6", 6-1/2", or 6-3/4" speakers for your vehicle, so why not make sure they sound their best? Stinger's Roadkill FAST Rings RKFR6 kit consists of six pieces of self-adhesive foam — two center pads, two inner rings, and two outer rings — which install on the speaker frame and behind the speaker, minimizing resonances and improving midbass response.

Get better sound from your speakers

You bought some nice 6", 6-1/2", or 6-3/4" speakers for your vehicle, so why not make sure they sound their best? Stinger's Roadkill FAST Rings RKFR6 kit consists of six pieces of self-adhesive foam — two center pads, two inner rings, and two outer rings — which install on the speaker frame and behind the speaker, minimizing resonances and improving midbass response.

1, 2, 3…better sound

The center pad mounts behind the speaker to absorb reflections from hard surfaces inside the car door or most other locations. The inner ring serves as a gasket for mounting the speaker to the metal surface. The outer ring mounts just outside the surround at the outer edge of the speaker, to couple the speaker to the door panel opening.

Stinger's Roadkill FAST Rings isolate the speaker from the mounting surface and the factory door panel to help eliminate unwanted vibration and noise from the door panels, while increasing midbass response. You'll have to trim FAST Rings for proper fit.

Product Highlights:

  • kit includes two center pads, two inner rings, and two outer rings
  • designed for 6", 6-1/2", or 6-3/4" car speakers
  • foam baffles cut down on unwanted resonance
  • self-adhesive foam simplifies installation
  • increases midbass
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the Box:

  • 2 Adhesive backed circular pads
  • 2 Adhesive backed inner rings
  • 2 Adhesive backed outer rings
  • Installation instructions on packaging

Very good for door panels in trucks. The inside the cab VS the outside of the cab are night and day. Better bass and cuts down on the rattle without needing to buy sound deadening material.

Terry, Cuba, MO

Reviews

Stinger Roadkill RKFR6 FAST Rings Reviews

Average Customer Review(s):

(36 Reviews)

Stinger Roadkill RKFR6 FAST Rings

Terry from Cuba, MO on 3/13/2019

Crutchfield Customer Review (What's this?)

Very good for door panels in trucks. The inside the cab VS the outside of the cab are night and day. Better bass and cuts down on the rattle without needing to buy sound deadening material.

Pros:

Cons: Sticky glue backing can be a trick to work with.

Stinger Roadkill RKFR6 FAST Rings

Israel Ralo Cruz from Hormigueros, PR on 3/1/2019

Crutchfield Customer Review (What's this?)

Less than a hour to install and can feel and hear the deference. Less noise from outside

Pros: Very effective. Sound prove. Is a must for better sound

Cons: None

Icing on your install.

Brian from East Moline, IL on 2/17/2019

Crutchfield Customer Review (What's this?)

I learned of these while watching the best installers I've ever seen. They say it all in this clip at 4:30. Five Star Car Stereo Chevy Cruze part 2

Pros: Keeps sound in the vehicle, not bouncing around behind the door panel.

Cons: Nope

Good fit

Crutchfield customer from Spring Hill, FL on 2/17/2019

Crutchfield Customer Review (What's this?)

Went in well with the Dynamat sound dampening.

Pros: Seems to be flexible from the speaker to the door panel.

Cons: None.

Good idea, hard to install

David from Kailua, HI on 2/10/2019

Crutchfield Customer Review (What's this?)

I eventually gave up on these - I think they're a good idea, but they are NOT as easy to use as the other great installation parts I bought. They will require modification to work (the instructions state this). You could blame it on me (but I started my career wiring mil spec systems), but the foam is pretty much impossible to cut to the right shape (even with a fresh blade) and the backing paper for the adhesive refused to stay put while being handled resulting in a wadded mess of foam sticking to itself. Would seriously be improved if they cut the thickness of the ring to the dimensions they suggest in the instructions and if the backing paper would stay put until I pulled it off.

Pros: logically, sealing the speaker would improve the sound

Cons: really hard to install.

Stinger Roadkill RKFR6 FAST Rings

Crutchfield customer from Mission Viejo, CA on 1/9/2019

Crutchfield Customer Review (What's this?)

Perfectly what I needed to mount speakers to door panel with no gaps

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Stinger Roadkill RKFR6 FAST Rings

jody from Smyrna, SC on 1/8/2019

Crutchfield Customer Review (What's this?)

Helped kill vibrations in door.would buy again

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Stinger Roadkill RKFR6 FAST Rings

Shane from Littleton, CO on 1/3/2019

Crutchfield Customer Review (What's this?)

These are constructed well. The seem to improve the sound into the vehicle and I would buy them again for other installations.

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Just what you need

Dustie from Thief Rvr Fls, MN on 12/10/2018

Crutchfield Customer Review (What's this?)

Fit perfect and didnjust what I needed them to do.

Pros: Fit

Cons: None

Stinger Roadkill RKFR6 FAST Rings

Crutchfield customer from Gainesville, GA on 11/25/2018

Crutchfield Customer Review (What's this?)

Seems to do as advertised. I already had my doors pretty well deadened so it's a little more difficult to evaluate the effectiveness.

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Worth it

Anthony Malave from Charlottesville, VA on 11/25/2018

Crutchfield Customer Review (What's this?)

Big improvement in bass response and absorbing vibrations around the door panel. The fast rings are a really great and quick way to get the full potential out of your speakers especially when in your car. Some door panels rattle due to the plastic or the design and these guys dampen those vibrations while isolating the speaker so you can hear the way it was meant to. The fast rings are worth it and I highly recommend it especially if your not using a subwoofer. You can also customize the rings. If you dont have the space the foam rings can be trimmed to fit most applications. Again great product and a must to get the most out of your new speakers.

Pros: straight forward install can be modified to fit most applications

Cons:

Stinger Roadkill RKFR6 FAST Rings

justin from Ormond Beach, FL on 11/2/2018

Crutchfield Customer Review (What's this?)

The item does as advertised.

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Stinger Roadkill RKFR6 FAST Rings

Erskin from Woodbridge, VA on 8/24/2018

Crutchfield Customer Review (What's this?)

Easy to use and does exactly what they're meant for

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Improved midbass

William from San Antonio, TX on 8/22/2018

Crutchfield Customer Review (What's this?)

These are perfect for improving the midbass in the door speakers.

Pros: Easy installation, improved midbass.

Cons: None.

Stinger Roadkill RKFR6 FAST Rings

Crutchfield customer from Lawrenceville, GA on 8/13/2018

Crutchfield Customer Review (What's this?)

Great product works well with other sound deadening material.

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Worked Well

Richard from San Antonio, TX on 8/10/2018

Crutchfield Customer Review (What's this?)

Installed these on 6.75" speakers both doors on a 2018 Silverado 1500 LT. Worked out well and was very easy; directs sound into the cabin well. Installed all 3 pieces on each speaker.

Pros: Easy Install, Very Convenient.

Cons: None

Stinger Roadkill RKFR6 FAST Rings

Rudy from Beloit, WI on 7/10/2018

Crutchfield Customer Review (What's this?)

They do not fit around aftermarket brackets in the door

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Crutchfield response on 7/11/2018 Ruby contacted our Customer Support team and set up a return. Purchases from Crutchfield can be returned or exchanged within 60 days.

Stinger Roadkill RKFR6 FAST Rings

Crutchfield customer from Gulf Breeze, FL on 6/23/2018

Crutchfield Customer Review (What's this?)

If properly installed, this device will cut down on a lot of the rattle. I would advise spending a little extra money and buying some sound dampening; the combination of the two will aliviate the "rattle" all together...leaving you with nice crisp sound.

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Stinger Roadkill RKFR6 FAST Rings

Crutchfield customer from Quakertown, PA on 6/18/2018

Crutchfield Customer Review (What's this?)

Surprised how much of a difference these made

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Stinger Roadkill RKFR6 FAST Rings

Crutchfield customer from Latrobe, PA on 6/12/2018

Crutchfield Customer Review (What's this?)

I believe they work as advertised but I had trouble getting them to fit in my car as it is a tiny convertible.

Pros:

Cons:

Clean mounting look!

Dan from Baxter , MN on 6/11/2018

Crutchfield Customer Review (What's this?)

These FAST Rings helped seal the speakers in their mounting position. They sure give me the impression that they improve the sound - the only reason I cannot be certain is because I also mounted new Focal speakers with these FAST Rings

Pros: Tight seal of air from sneaking around the speakers.

Cons: None

Stinger Roadkill RKFR6 FAST Rings

Crutchfield customer from Sterling, VA on 5/13/2018

Crutchfield Customer Review (What's this?)

These are excellent for the rear speakers but not the front. Had to uninstall cuz they made the front sound to basie. My fault for not asking first.

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Stinger Roadkill RKFR6 FAST Rings

Crutchfield customer from Pekin, IL on 4/1/2018

Crutchfield Customer Review (What's this?)

Very easy to install, everything sounds great!

Pros: Easy installation.

Cons:

Stinger Roadkill RKFR6 FAST Rings

shawn from Laconia, NH on 3/27/2018

Crutchfield Customer Review (What's this?)

perfect fit, great product, a must for a professional install.

Pros:

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Easy to use

PETER from Hinesville, GA on 3/27/2018

Crutchfield Customer Review (What's this?)

Easy to install. Worth spending a couple of more dollars to ensure you get the best sound. Time will tell if they last.

Pros: Simple to use. Easy way to seal your speakers.

Cons: Not water proof.

Stinger Roadkill RKFR6 FAST Rings

Crutchfield customer from Honolulu, HI on 3/26/2018

Crutchfield Customer Review (What's this?)

Good quality fast rings.

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Stinger Roadkill RKFR6 FAST Rings

Timothy from York on 3/25/2018

Crutchfield Customer Review (What's this?)

Simple and effective product.

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Use them!

Rob from Pen Argyl, PA on 3/13/2018

Crutchfield Customer Review (What's this?)

Worth the extra time using these to extend bass response.

Pros: Easy to install, enhance bass.

Cons: None

Stinger Roadkill RKFR6 FAST Rings

Crutchfield customer from Bridgeport, CT on 3/10/2018

Crutchfield Customer Review (What's this?)

Works good. Holds the sound from going into the door panel

Pros: Good product

Cons: non

Stinger Roadkill RKFR6 FAST Rings

Crutchfield customer from Millville, UT on 3/8/2018

Crutchfield Customer Review (What's this?)

??

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Stinger Roadkill RKFR6 FAST Rings

Crutchfield customer from Richmond, VA on 2/25/2018

Crutchfield Customer Review (What's this?)

Simple to install and made a huge difference in sound quality. I'm no longer losing my mid-bass to the space between the door and the panel. For a better fit and alignment, I installed the outer ring with adhesive to the door panel instead of the speaker. It worked well with slight compression when the panel was re-installed. Not cheap, but they do what they say.

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Stinger Roadkill RKFR6 FAST Rings

CARSON from Fort Wayne, IN on 2/20/2018

Crutchfield Customer Review (What's this?)

Helps improve sound love these things

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Stinger Roadkill RKFR6 FAST Rings

Crutchfield customer from Newark, DE on 1/16/2018

Crutchfield Customer Review (What's this?)

Improves mid bass!

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5 star

Crutchfield customer from Covina, CA on 1/12/2018

Crutchfield Customer Review (What's this?)

What a difference these rings make. A must have.

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Stinger Roadkill RKFR6 FAST Rings

Crutchfield customer from Norcross, GA on 11/8/2017

Crutchfield Customer Review (What's this?)

Fair enough for what you're getting. I ended up using the back one (flat piece) on the inside of my door behind the speaker, and in front of my driver to channel it into the cabin better. Ended up not using the middle ring because i had some waterproof weather sealing foam tape that worked better for sealing the speaker against the door. Be aware that open cell foam will retain water. I've opened my door up and the bottom of the foam was wet. Not sure if this will cause any issues; i would hope that it dries out enough to not cause a smell or mold or anything.

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Stinger Roadkill RKFR6 FAST Rings

JD from Colorado Spgs, CO on 10/29/2017

Crutchfield Customer Review (What's this?)

These work great! Seems to have helped focus my 6.5 fronts and with increased mid bass response.

Pros: They work!

Cons: None.

Details

Hands-on research

Product Research

Features

Overview: Each Fast Ring is three concentric foam circles, a center pad, an inner ring, and an outer ring. They mount around a speaker to improve sound quality. Typical mounting is in a door, but they can be used in almost any speaker location.

Center Pad: The center pad mounts to the inside of the outer door panel, directly behind the speaker. This pad absorbs much of the speaker's back wave, helping prevent interference with the front wave you want to listen to, and reduces vibration. Dimensions:

  • Diameter: 5-5/8"
  • Depth: 2" (can be trimmed to fit)

Inner Ring: The inner ring is sandwiched between the speaker and the mounting surface, providing a barrier to prevent low frequency (bass) cancellation. Dimensions:

  • Outer Diameter: 6-1/2"
  • Inner Diameter: 5-5/8"
  • Depth: 2" (typically trimmed to 1/4")

Outer Ring: The outer concentric ring mounts to the top of the speaker and is sandwiched between the speaker and door panel (or factory grille). This ring directs all the speaker output into the cabin, and acts as a barrier to interference from rear waves trapped inside the door panel. This ring also helps prevent the door panel from vibrating. Dimensions:

  • Outer Diameter: 7-1/2"
  • Inner Diameter: 6-1/2"
  • Depth: 2" (can be trimmed to fit)

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Accessories
Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Were recommended by a system designer on a user group I belong to. I was skeptical as to the benefit. As a test I installed it on one door and left it off the other. The output from the speaker with it installed was significantly higher than the one without. No question it helped boost the volume and clarity of the sound. Just bought a second set for my rear door speakers. No skeptical any more... [ Benjamin  Mar 03, 2019 ]
Based on conversation and recommendations of Francis. [ Gary  Feb 25, 2019 ]
Saw these used in a YouTube video by professional audio installers. I had just replaced the speakers in my own car and need something to insulate and direct sound better into the cabin of my vehicle. [ Daniel  Feb 24, 2019 ]
I have a 2007 Silverado extended cab w/t and the aftermarket speakers rattle in the rear doors. I figure I'll try this after Dynamat didn't completely eliminate the rattle. [ timothy  Feb 09, 2019 ]
Recommended by Francis from Tech Support [ Henry  Jan 23, 2019 ]
Recommended product to isolate sound coming through speaker. [ James  Jan 22, 2019 ]
These seemed to be a good deal [ Shane  Dec 21, 2018 ]
I was curious to see if they actually help with midbass. [ Adrian  Dec 06, 2018 ]
for better sound quality and sound isolation within within the door and sound direction into the cabin. [ Fernando  Dec 04, 2018 ]
To get maximum audio quality [ Lahiru  Nov 16, 2018 ]
If you're installing aftermarket speakers and you DON'T get FAST rings, you're missing out on a very easy way to improve the sound of your system. These direct the sound INTO your vehicle rather than having it bounce around/diffuse behind the door panels/cards. [ Charles  Nov 13, 2018 ]
Better sound [ Daniel  Oct 09, 2018 ]
only item like them [ Nathan  Oct 04, 2018 ]
My truck has big, open doors, and the midrange (component speakers) is very muddy. Hope this makes it a bit more crisp. [ Harry  Oct 01, 2018 ]
Recommend by your tech support and I was planning on buying here but when your tech support called me back in less than 10 minutes after my email. I was extremely impressed and you have just made life time customer. This is my first purchase here but it won't be my last. [ James112  Sep 28, 2018 ]
Louder mids [ Chais  Aug 13, 2018 ]
To enhance the sound of the new speakers I am installing in the doors of the car. [ James  Aug 01, 2018 ]
Aftermarket speakers have no seal. [ KUUHIAPO  Jul 23, 2018 ]
I probably won't need this entire kit...But, it looks like I will be using the outer rings for closing the gap between the speaker and the door panel for sound direction. It's too bad just the outer rings are not available separately. [ Paul  Jul 17, 2018 ]
recommended by installer [ Debra  Jul 03, 2018 ]
I purchased these to better sound response from my new aftermarket speakers. [ Stephen  May 07, 2018 ]
Hoping to protect new Infinity Kappa speakers and also improve sound quality inside the vehicle. Also to reduce road noise if possible. [ Kevin  Apr 14, 2018 ]
Used it before [ peter  Mar 27, 2018 ]
To help seal my speakers better and get as much clean signal out of my system. [ Salvatore  Mar 22, 2018 ]
For improved speaker performance [ Edward  Mar 10, 2018 ]
For aftermarket speaker install [ DUSTY  Feb 14, 2018 ]
I've seen these used in videos posted by the Car Audio Fabrication YouTube channel. Can't hurt, right? [ William  Feb 11, 2018 ]
Helps get the sound out though the door panels [ CARSON G  Jan 26, 2018 ]
To seal speaker to door panel just like stock speakers [ Frank  Jan 18, 2018 ]
To help my front door speakers produce better mid bass. [ Joe  Dec 25, 2017 ]
i choose these because they will serve the purpose in which they are intended [ Randall  Nov 10, 2017 ]
I purchased this kit to "sure up" the distance between my speakers and the inside of the door panel. [ Bobby  Oct 18, 2017 ]
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