Brisk Hemi Race Plug, Set of 16 Spark Plugs, NON-Projected Tip, for Race Applications of 1500+ BHP (2009+ 5.7L HEMI, 2015+ 6.2L HELLCAT) - ER10S MSRP: $183.84 $165.60
To get more displacement, SRT engineers bored out the diameter of the cylinders in the Chrysler 300C SRT8's HEMI® by 3.5 mm each, to increase the total displacement to 6.1-litres from 5.7-litres. Compression ratio was also increased to 10.3:1 from 9.6:1, unleashing more energy in the combustion process.
9S9SOiA. 450 621 461 361 561 117 485 134