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Equal Length Header

Killer B Motorsports "Holy Header" is a 4 into 1 equal length header. Short primary tubes into a single secondary ensures absolute minimum header volume so gases move quickly and turbo response is maximized. Constructed of 321 stainless steel which maintains its strength to a higher temperature than the typical 304 stainless most companies use for cost reasons. A cast 321 stainless merge collector ensures smooth flow and maximum strength. Includes up-pipe and uses a V-band clamp connection between the manifold and up-pipe. Also available is an external wastegate up-pipe option which includes dump tube and is designed for Tial 38mm wastegate (sold separately).

Requires STI oil pan.

Usually ships in 1 to 2 days.

Manufacturer: Killer B Motorsports


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  • Subaru Impreza WRX MY06-14
  • Subaru Impreza WRX MY02-05 (with STI oil pan)
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  • Subaru Outback XT MY05-09
Part No. Description Price Ea. Add to Cart
KB-HH41 Killer B 4 Into 1 Performance Header $1539.00
KB-HH41EW Killer B 4 Into 1 Performance Header External Wastegate $1835.00