Brisk 07-09 GT500 Silver Racing Spark Plug (600hp+)

Brisk Silver Racing Spark Plugs are the ultimate spark plug for your Mustang! These spark plugs are perfect for high compression, forced induction, and nitrous applications where maximum spark energy is required.

Unlike copper, platinum, or iridium designs, Brisk spark plugs feature a fine wire Silver center electrode, cut-back side ground electrode, and high dielectric strengh insulator for superior ignitability, low ignition voltage requirements, and high dielectric strength. What does that mean to you? It means you get a stronger, more intense spark for improved power and gas mileage!

2007-2009 Applications
Brisk Silver Racing spark plugs colder than stock plugs and recommended for supercharged, turbocharged, and nitrous applications. Put these Silver Spark plugs in today and begin to get the most out of your Mustang!

Note: There are two heat ranges offered for this spark plug. Part number GR14-S is recommended for applications up to 600 flywheel horsepower. Part number GR12-S is a colder heat range and recommended for applications up to 850 flywheel horsepower.