Killer B Equal Length 4-1 Holy Header and Up Pipe EJ Series Subaru Designed and made in the

Designed and made in the USA

import and sport compact applications

Digital Inputs

and N25 head castings

Killer B Equal Length 4-1 Holy Header and Up Pipe EJ Series Subaru Designed and made in theThe 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