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Forged Pistons (Default is JE but you can choose any of the options below)
Typical tensile strength is 230ksi
Custom Outfront Motorsports spec EJ257 CP piston set (21cc)
super-alloy field
Killer B Equal Length 4-1 Holy Header and Up Pipe EJ Series FA20 Timing Parts Forged Pistons (Default is JEThe Killer B Motorsport Holy Header was developed using state of the art CAD software & simulations to determine the optimal design for increasing power as much as possible throughout the rev range. Short as possible primaries with a single secondary significantly decrease header volume, allowing exhaust gas pressure to build quickly. Symmetrical 4 1 design maintains high and consistent exhaust velocity as RPMs rise. You can expect faster spool up