Customer Reviews (21) Write a Review

Overall Rating 4.9

out of 5 stars

Installation Time:Afternoon

Installation Cost:$100-$250

• Performance Gain 4.666667 4.7
• Fit 5 5

• 5/5

  Installation Time: Afternoon

  May 21, 2018

  Excellent

  No more misfires. I bought these with the MSD coil boots. It runs and accelerates like a new car. I had no idea spark plugs and boots make such a difference.

  JustinR

  Year: 2006 Submodel: GT

  Helpful (0) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5
• 5/5

  Installation Time: Afternoon

  April 14, 2018

  Great

  Awsome fit fast delivery perfect customer service. Will definitely be buying more from American muscle

  AmosS

  Year: 2006 Submodel: GT

  Helpful (1) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5
• 5/5

  Installation Time: Afternoon

  April 13, 2018

  Great Plugs

  Gotta 2006 4.6L Mustang GT convertible and have been disappointed with original Ford fouling out at about 25K and online forums recommending colder Autolite 0 plugs which I installed about 30k. This is my daily driver, so no strip starts, some freeway speeds and few long distance drives. Well got misfires in several cylinders over periods and talked to the American Muscle folks after reading numerous Mustang reviews and the leader was Brisk Silver racing plugs. Fit was same and easy. Like the normal open electrode that I can confirm Gap rather than previous sealed, closed electrode. I noted immediate correction of the misfires and increased performance. Great start of response and performance noted in passing speeds, and overall peppiness. Only in several weeks so cant comment on mpg increase. Love these plugs so far. Afternoon installation mainly in care pulling other plugs out as plugs could separate in head....lots of Power Blaster overnight and careful extraction and a little more careful installation per online horror stories.

  FrankS

  Year: 2006 Submodel: GT

  Helpful (1) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5
• 5/5

  Installation Time: Less than 1 Hour

  April 03, 2018

  Nice upgrade!

  These go in nicely gapped at oem spec. WARNING the old ones do not come out so easily. I did mine with a hot motor and some PB blaster. Work em out slowly! Back and forth.. It's not the threads it's the fit below them.. Take your time!!

  RobbieR

  Year: 2007 Submodel: GT

  Helpful (1) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5
• 5/5

  Installation Time: Less than 1 Hour

  March 28, 2018

  Brisk racing plugs

  Absolutely the difference I was looking for over the stock plugs. Should have changed over a long time ago.

  Jack

  Year: 2006 Submodel: V6

  Helpful (1) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5
• 5/5

  Installation Time: Afternoon

  January 28, 2018

  POWER!!!!

  These plugs are the best I've ever installed in my Mustang. The acceleration is better and the car feels more powerful.

  JD

  Year: 2006 Submodel: GT

  Helpful (1) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5
• 5/5

  Installation Time: Less than 1 Hour

  December 30, 2017

  Awesome plugs

  What a great plug to upgrade to. Also got a set of MSD coil packs to go with them and it ran so much smother. Now I don’t have to worry about breaking the plug in the head

  MartinH

  Year: 2008 Submodel: GT

  Helpful (2) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5
• 5/5

  Installation Time: Less than 1 Hour

  December 28, 2017

  Brisk Racing Spark Plugs

  Replaced spark plugs with a second set of Brisk Racing spark plugs after 80,000 miles. Gapped at .045”. Installation took 30 minutes. 2005 Mustang GT runs smooth and strong even with 200,000 miles. Great plugs. Highly recommended.

  AGP51

  Year: 2005 Submodel: GT

  Helpful (2) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5
• 5/5

  Installation Time: Afternoon

  December 12, 2017

  Spark plugs

  Very good product....but it’s a pain getting the old plugs out

  Josh

  Year: 2006 Submodel: GT

  Helpful (1) Thanks for your input!

  • Performance Gain 3

    3

  • Fit 5

    5
• 5/5

  Installation Time: Less than 1 Hour

  June 22, 2017

  Best plugs

  These are a good combo with the msd blaster coils you can really feel a decent diffrence

  Amazingeric

  Year: 2006 Submodel: GT

  Helpful (2) Thanks for your input!

  • Performance Gain 3

    3

  • Fit 5

    5
• 5/5

  Installation Time: Less than 1 Hour

  June 21, 2017

  Great Purchase

  I was installing a supercharger when I decided I needed to have these spark plugs, (for some reason you spend that much on a "kit" for a supercharger, but do not get supercharger spark plugs to go along with the "kit".) These plugs have been great, I have had no issues with them currently, while running about 575 to the flywheel.

  EricL

  Year: 2006 Submodel: GT

  Helpful (1) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5
• 3/5

  Installation Time: Shop Install

  Installation Cost: $100-$250

  June 14, 2017

  Splugs

  Average plugs, nothing different. These plugs offered no extras.

  tdonahu2

  Year: 2005 Submodel: GT

  Helpful (1) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5
• 5/5

  Installation Time: Afternoon

  April 26, 2017

  Awsome Spark plugs.

  Yes get the block hot and then don't forget some sea foam deep creep. Did both and didn't snap any old plugs. These plugs are very nice and work well

  MaxinesDaddy

  Year: 2007 Submodel: GT

  Helpful (2) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5
• 5/5

  Installation Time: Less than 1 Hour

  March 08, 2017

  ONE PIECE

  Bought these to replace my worn out motorcrafts. I had four of those stupid two piece plugs snap off and these brisks are one piece so common sense prevailed. Was able to gap them with no issues. Car running great now

  Trevor06

  Year: 2006 Submodel: GT

  Helpful (3) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5
• 5/5

  Installation Time: Afternoon

  January 12, 2017

  Running Great

  Just put these in the car today. The long part was taking out the factory plugs. Patience is key. 9/16th inch spark plug socket needed. Car runs smooth.

  CaliStangBLA

  Year: 2007 Submodel: GT

  Helpful (2) Thanks for your input!

  • Performance Gain 4

    4

  • Fit 5

    5
• 5/5

  Installation Time: Afternoon

  October 26, 2016

  Overall good plug

  Real nice upgrade from stock, hardest part is removing the old plugs. Make sure to get the engine block nice and hot before trying to remove old plugs to help reduce the chance of breaking the plugs in the block. I did it cold and snapped 5 of em, luckily I had the tool to remove the broken plugs.

  Henny

  Year: 2006 Submodel: GT

  Helpful (5) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5
• 5/5

  August 28, 2016

  Awesome

  I bought this SPARK PLUGS for my 2007 Mustang GT it's really good give more power I would really recommend these to put it on your Mustang good product 100 percent satisfied thank you American muscle

  Singh30

  Year: 2007 Submodel: GT

  Helpful (3) Thanks for your input!
• 5/5

  July 27, 2016

  Works

  Just installed this is my first set of brisk plugs. A friend has used them and suggested these over HT0. A must if you use nitrous like me.

  Ron08GT

  Year: 2008 Submodel: GT

  Helpful (1) Thanks for your input!
• 5/5

  July 22, 2016

  These work great

  Made a big difference on my 05 GT idles real smooth and no more misfires pair these with some accels and what a difference

  Anthony1217

  Year: 2005 Submodel: GT

  Helpful (2) Thanks for your input!
• 5/5

  Installation Time: Less than 1 Hour

  February 29, 2016

  Very efficient plugs

  Can tell a huge difference from my previous e3 plugs. These will compliment my next mods very well. I have kooks long tube, frpp intace, and off road mid h pipe ordered already will be installed next weekend. If N/A may want to gap the plugs more since the gap on them are more for force induction.

  Silver06gt

  Year: 2006 Submodel: GT

  Helpful (3) Thanks for your input!

  • Performance Gain 4

    4

  • Fit 5

    5

  • Bang for your Buck 4

    4