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aFe Twisted Steel Down-Pipe (Race) - Subaru STI VA


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Add dyno-proven power to your Subaru with this Twisted Steel Race down-pipe which produced up to +22 horsepower and +37 lbs. x ft. torque, as measured on our in-house dyno *(Dyno test results are from P/N 48-36801-HC). Brush finished 304 stainless steel tubing improves exhaust flow to deliver increased horsepower and torque. The down-pipe is 100% hand TIG-welded and uses a unique fabricated bellmouth design that increases exhaust velocity and eliminates low pressure drops which helps to scavenge the exhaust for increased power. This direct bolt-on down-pipe requires no cutting or drilling for a hassle-free installation.

Performance Gains:
In house dyno testing produced gains of up to +22 horsepower and +37 lbs. x ft. torque *(Dyno test results are from P/N 48-36801-HC).

Race Version:
This down-pipe was designed as a "Race" version for added performance and a more aggressive sound.

Brushed 304 SS Construction:
This down pipe is constructed of 3" mandrel-bent, brush finished 304 stainless steel tubing for maximum flow and corrosion resistance.

Fabricated Bellmouth Design:
A unique fabricated bellmouth design increases exhaust velocity providing a free flowing wastegate.

Auxiliary O2 Bung:
This down-pipe uses factory mounting locations for the O2 sensor and includes an additional bung for either a wide-band O2 gauge or auxiliary instrumentation.

100% TIG-Welded by certified craftsmen for race proven strength and durability. TIG-Welding provides the strongest welds reducing stress cracks.

Hassle-Free Installation:
All hardware and brackets are included for a hassle-free installation.