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Subaru WRX (1994 - 2014) & STI (1994 - 2020) Premium Unequal Length Headers
SKU: M2-018
Stainless Steel Unequal Length Headers for Subaru WRX (1994 - 2014) & STI (1994 - 2020)
Suitable for all models of Subaru WRX / STi hatch and sedan including:
- GC8 / GF8
- GDA / GDB / GG
- 1994-2014 Subaru Impreza WRX
- 1994-2020 Subaru Impreza STI
- 2004-2013 Subaru Forester XT
Unfortunately the standard Subaru WRX exhaust setup is quite restrictive to pass mass production emissions and sound legalities. Unequal length headers in our 4-2-1 configuration are slightly lighter than equal length, and are proven to increase efficiency and power, bringing boost on 200-300rpm earlier due to it's shorter runners.
Un-equal length ensures that beautiful boxer rumble is maintained!
Header Specifications
- High flowing 4 into 2 into 1 unequal length design for the best sound possible (typical boxer note)
- Bolts to factory exhaust / cat.
- 2 bolt connecting flanges
- Corrosion resistant, polished stainless steel piping and components.
- Coated, corrosion resistant steel flanges
- TIG welded
- Mandrel Bent
- Twin flex joins
- Welded & smoothed internal joins for increased flow
- Up-pipe ID: 56mm
- Header Pipe ID: 41mm
These are a proven design producing fantastic gains on boxer motors.
NOTE: Only suits single-scroll turbo setups.
These headers provide the WRX with the biggest bang for your buck in performance gains for the WRX while opening up that distinctive rally car rumble the car should have left the factory with.
Shipping Information
Most orders land in 5–12 business days. We'll keep you updated at every step of the journey.
The Kren Bits journey:
- Order received — Day 0
- With fulfilment — Day 1–2
- Heading to courier — Day 2–4
- Shipped — Day 3–7
- Almost there — Day 5–10
- Delivered — Day 5–14
Where your part ships from:
Your order ships from the closest warehouse with available stock across our six-warehouse network — NZ, AU, TH, UK, US, and CN.
We email you at every real milestone — order received, with fulfilment, heading to courier, shipped, almost there, delivered. No chasing, no vague waits.
For more details, visit our Track Your Order page.
Product Enquiry
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