Exhaust› Headers, Manifolds and Components
Killer B Motorsport
Killer B Equal Length 4-1 Holy Header EJ Series Do It Yourself
SKU: K005 HH-DIY
Advanced — 4+ hours
Description
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Killer B Motorsport |
| Part Number | K005 HH-DIY |
Videos
My Subaru STi is now FBO! | Killer b Headers | Grimmspeed Up pipe | Turbosmart EWG install!
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Killer B Header Sound GR.mov
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2013 WRX STI Before and After Killer B Headers
2012 STi with killer B Motorsport Header & Invidia Cat-Back
2015 STI Nameless TBE & Killer B Stage2+ dyno
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy