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Brisk Silver Racing Spark Plugs; 450HP+ (Mid 08-10 GT)

Item 386532
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Market Price $139.99 You Save 23% ($32.70)
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$107.29 (set of 8)

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Ship to: Ashburn - 20149
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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Brisk "Silver Racing" Series Spark Plugs
      • Silver Center Electrode for More Power
      • Recommended for 450+ Flywheel Horsepower
      • Brisk Part# XOR12YS
      • 12mm Thread Pattern
      • Fits 2008-2010 GT and Bullitt Mustangs w/ Brown Coil Boots
      • Sold as a Set of 8


      High Powered Performance. Keep your Mustangs high powered 3-valve 4.6L V8 engine running smoothly and more efficiently with a brand new set of Brisk "Silver Racing" series spark plugs for a constant reliable spark power. These Brisk Silver Racing spark plugs are designed for use in Mustangs that are making 450 or more horsepower at the flywheel, perfect for Methanol injection, Forced induction and Nitrous applications.

      Superior Design and Materials. Brisk Silver Racing spark plugs feature a high dielectric strength insulator and use a 1.5mm fine wire silver center electrode for its excellent electrical and thermal conductivity which in turn produces a more powerful spark. The tapered ground strap design allows for superior ignitability on hard to ignite fuels minimizing the chance fouling.

      Application. This set of eight (8) Brisk Silver Racing Spark Plugs are specifically designed for the 2008-2010 GT and Bullitt Mustangs equipped with Brown coil boots only.

      Fitment: 2008 2009 2010 Details

      MPN# XOR12YS

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (6)

      Write a Review

      Ratings Summary

      5.0 out of 5 overall rating from 6 customers

      Installation Time: Afternoon

      Installation Cost: 0-$100

      • January 15, 2020

        5 2010 GT - CoreyL Installation Time: Less than 1 Hour

        Excellent Product

        I have always been honest with everything I say, and let me tell you that Brisk Spark Plugs are the truth, They were easy to install. They gave my Mustang a new heart, and it runs so much stronger, idles smoothly, keeps my fuel efficient, and responds when needed, just ask those Chevrolet and Dodge owners, when they are looking at my tail lights, overall, great product, don't sleep on Brisk Spark Plugs, may be a little higher, but they are worth it. Great for Supercharged, Turbocharged, Nos Mustangs, and they keep my temperature down.

        Helpful (0)
      • October 06, 2018

        5 2010 GT - JamesE Installation Time: Shop Install Installation Cost: 0-$100

        Tune, cams,plugs

        Engine runs very smooth now and I am very pleased I made the decision to try these plugs.

        Helpful (7)
      • November 12, 2017

        5 2008 GT - RickB Installation Time: Less than 1 Hour

        Best of the best for your 3v

        After chasing a persistent random misfire under cruise conditions with Ford Racing plugs, we opted for a set of these. While the cost does take a lil to get your head around they flat out work, well worth the cost.

        Helpful (11)
      • June 22, 2017

        5 2009 GT - KevinT Installation Time: Less than 1 Hour

        Great plugs

        Increased performance and mileage. Definitely felt the difference with these and the MSD coils. Put these on a 09 GT/CS with a 72mm Turbonetics turbo.

        Helpful (10)
      • June 01, 2017

        5 2008 Bullitt - wonatonor2 Installation Time: Less than 1 Hour

        Brisk spark plug and Coil on plug install

        It took me less than an hour to install the plugs and coils. I had no problems. The car runs smoother and I noticed an improvement in performance. The car seems more eager to go than it did before. Cool!

        Helpful (10)
      • December 17, 2015

        5 2010 Other - Dill Installation Time: Less than 1 Hour

        America muscle

        Order the brisk plugs for my 2010 roush in it really woke the car up great buy

        Helpful (14)

      Questions & Answers (1 answers)

      1 Top Rated Question

      What should the gap be set to for a Roush supercharged 4.6L? I left it at factory setting but seems a little sluggish at 3000 rpm.

      • Depending on the modifications on your vehicle the gap will ultimately change. I would highly recommend speaking to your tuner and how the vehicle was tuned for the proper gap for the spark plugs.

      Helpful (1)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (8) Spark Plugs

      Tech Specs

      Will It Fit My Mustang

      • Bullitt - 08, 09
      • GT - 08, 09, 10

      Designed for the 2008-2010 GT and Bullitt Mustangs equipped with Brown coil boots only.

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