ETS Subaru STI V2 MaxFlow Exhaust Manifold / Header

The wait is over! Extreme Turbo Systems is proud to introduce the new ETS V2 MaxFlow Exhaust Header for the 2004+ Subaru STI.

Designed as a direct replacement for the factory exhaust manifold, the ETS V2 MaxFlow Header delivers exceptional flow without sacrificing fitment or ground clearance. Large 1-7/8-inch primary runners feed into a true low-angle 4-to-1 merge collector before transitioning into a massive 2.5-inch secondary—maximizing exhaust velocity, scavenging, and overall flow.

Features

• Large 1-7/8-inch primary runners and 2.5-inch secondary for maximum exhaust flow
• CNC mandrel-bent runners
• Custom 0.100-inch-thick, USA-made tubing for exceptional durability
• True low-angle 4-to-1 merge collector for improved flow and exhaust scavenging
• Slip-fit connection for easier installation and removal
• Choice of 2-bolt, 3-bolt, or V-band up-pipe flange
• Direct stock-replacement design
• Low-profile construction for maximum ground clearance
• Confirmed fitment with oversized oil pans from IAG and Killer B
• Surfaced flanges for a reliable, leak-free seal
• 304 stainless-steel construction
• Designed, fabricated, and built entirely in-house in the USA

Check out this awesome video by Dustin Williams.

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