RCM Stainless Steel Tubular Exhaust Manifold - Unequal Length (Subaru)

RCM Stainless Steel Unequal Length Exhaust Manifold for Subaru

Bolt-on power and that unmistakable boxer burble—the RCM unequal length exhaust manifold is a direct upgrade over the heavy, restrictive OEM casting, built for Subaru owners who want more from their turbo without sacrificing character.

Features & Benefits

• Unequal-length tubular design maximizes exhaust flow and turbo spool while retaining the signature Subaru engine burble.
• Improved spooling characteristics get the turbo working sooner for more responsive power delivery.
• Increased BHP and torque through improved exhaust gas flow across the rev range compared with the restrictive OE manifold.
• Significant weight reduction versus the factory manifold, cutting unsprung mass from the engine bay.
• 3-bolt manifold-to-up-pipe flange provides a more robust sealing design than typical performance manifolds, built for a long-lasting, leak-free connection.
• Slip-jointed centre sections allow the manifold to expand and contract naturally with heat cycles, keeping stress off the welds and eliminating the need for unreliable flexi joints.
• Stainless steel construction delivers durability under sustained heat and driving conditions.
• Single-scroll compatible for direct fitment on supported turbo setups.

Technical Specifications

• Design: Unequal length
• Material: Stainless steel, tubular construction
• Flange: 3-bolt manifold-to-up-pipe
• Joints: Slip-jointed centres
• Turbo compatibility: Single-scroll

Vehicle Fitment

• 2004+ Subaru STI
• 2002–2014 Subaru WRX
• 2005–2009 Subaru Legacy GT
• 2005–2009 Subaru Outback XT
• 2004–2008 Subaru Forester XT

Some vehicles may require an upgrade to the EJ257 oil pan and pickup for proper fitment. If you are unsure whether your Subaru needs this, reach out to our team before ordering.

Engineered for durability and built to keep your Subaru's turbo character intact, the RCM unequal length exhaust manifold is a straightforward upgrade for drivers across Canada and the US looking to get more out of their EJ-series turbo engine.