GrimmSpeed Uppipe Black Ceramic Coated Subaru 2002-2014 WRX / 2004-2021 STI
The GrimmSpeed catless uppipe is made of 304 SS (all of it; the flanges, flex section and tubing) and has super thick, 14-gauge pipe-wall thickness, which is the most heavy-duty pipe you will find for this kind of application. Other pipes use cheaper, thinner steel and are marketed as "super light weight," not GrimmSpeed's. Also, their one-of-a-kind, Triple Layer Flex Joint is not located in the bend, which increases the life expectancy of the flex section. The inlet size is 1.92" and the pipe tapers down to 1.72", which acts as a funnel as it moves into the turbo allowing for increased air velocity. The GrimmSpeed Uppipe outlet size is a perfect match to the most common stock location turbos allowing for a smooth transition into the turbo. Because GrimmSpeed is a porting company they make sure to have the smoothest transitions possible between pipes to allow for maximum flow and quickest spool up (they call this "quality airflow"). 02-05 WRX models have a pre-turbo catalyst, making this uppipe a major performance improvement. Though the 06-07 WRX and 04-07 STI do not have a cat in the factory uppipe, this product will still improve throttle response and drivability. This product does not include the stock EGT bung. Note: This product does not include an EGT bung.
"GrimmSpeed Up Pipe is made with the best local raw materials available. The flex joint is 321 Stainless Steel w/ an Interlocking Liner and the tubing is a heavy duty 14 Gauge 304 Stainless Steel (competitors use thinner 16 GA) that has been precisely CNC Mandrel Bent; our flanges are made out of 1/2" 304 Stainless Steel and are put through a tumbling process to smooth out the edges. The pipe is hand-welded on the inside of the flange, in addition to the outside, allowing for added strength to the finished product and a nice mating surface with optimal flow through the pipe. All fabrication is completed by our team of certified Welders/Fabricators which ensures that each and every Up Pipe that comes out of our facility will handle anything you throw at it!"-GrimmSpeed
- 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