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GrimmSpeed 02-10+ WRX/STi/LGT Uppipe w/ Black Ceramic Coating


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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 inconsisent 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.


Flow Bench Results vs. OEM at 28" WC

OEM Catless - 244.6 CFM

OEM Catted - 164.7 CFM

GrimmSpeed - 292.6 CFM

Spool Up

Application specific but generally you will see 300-400rpm quicker spool up

HP Increase

Application specific but generally you will see 8-10HP increase

Quick Specs

Gaskets Included - Heavy Duty GrimmSpeed Gaskets

Flex Joint - 321 Stainless Steel "Tuned-Bellow"

Tubing Thickness- 14 Gauge Piping Thickness - 33% thicker than most competitors

Pipe to Flange Connection - Hand-welded on both outside/inside of the flange for an extremely strong connection

Flanges - 1/2" 304 Stainless Steel

Optional Ceramic Coating

Increased HP by ~10hp

Reduce Turbo Lag

This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

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