HKS Stainless 2-Bolt Up-pipe - Most Subaru Turbo EJ engines

HKS 34998-BF001 Up-Pipe – High-Flow Stainless Performance Upgrade

Upgrade your turbo Subaru’s exhaust flow with the HKS 34998-BF001 Up-Pipe, a genuine high-performance component engineered by HKS — one of the world’s most respected names in aftermarket performance parts.

Key Features

• Direct Fit Performance Part – Designed to bolt onto select Subaru WRX and Impreza turbo models with stock turbo setups, delivering improved exhaust flow right out of the box.

• Premium Stainless Steel Construction – Crafted from polished stainless steel for exceptional durability, corrosion resistance, and long-lasting strength under high-heat conditions.

• Optimized 45 mm Piping – A 45 mm internal diameter piping size improves exhaust gas evacuation, which can help reduce turbo lag and support better overall performance throughout the powerband.

• Precise Engineering – Developed with HKS’s expertise in turbo systems to maintain proper flow characteristics and reliable fitment with the factory turbocharger interface.

Performance Benefits

• Enhances exhaust gas flow for more efficient turbo response

• Supports quicker spool-up and throttle response

• Durable materials for sustained performance under demanding driving

FITMENT:

• 2004-2021 Subaru STI

• 2002-2014 Subaru WRX

• 2006-2013 Subaru Forester XT

• 2007-2009 Subaru Legacy GT

• 2007-2009 Subaru Outback XT