GrimmSpeed Up-Pipe 2-Bolt 2004-2021 WRX / STI

Description:
Adding an aftermarket Up Pipe is one of the first things you should do to your Subaru. Arguably one of the best $/HP ratios. Our goal was to make a premium heavy duty Up Pipe for you.;We designed this Up Pipe using our in-house FARO Arm along with the latest and greatest Solidworks CAD software. This assures that we can offer you the most precise and best fitting Up Pipe on the market. In short, OEM exhaust manifold pieces are inconsistent so we used our reverse engineering hardware/software to scan countless OEM pieces to determine the range of best fitments for our aftermarket pipe. This allows us to be very confident that your flanges will be leak free and the Up Pipe will fit nicely.

Features:
- Flex Joint - 321 Stainless Steel "Tuned-Bellow"
- Tubing Thickness- 14 Gauge Piping Thickness - 33% thicker than most competitors
- Pipe to Flange Connection - Cut-Back flange allows much smoother connection. -Piping is ported flush with flange so there is no step into the pipe.
- Flanges - 1/2" 304 Stainless Steel CNC Milled - All 3 sides are milled for precise tolerances in manufacturing
- Reduce turbo lag

Performance:
- Flow Bench Results vs. OEM at 28" WC
- OEM Catless - 244.6 CFM
- OEM Catted - 164.7 CFM
- GrimmSpeed - 292.6 CFM

Includes:
- Gaskets
- Heavy Duty GrimmSpeed Gaskets

Applications:
2006-2007 WRX
2004-2007 STI
2008-2014 WRX
2008-2014 STI
2015-2021 STI