Turbo XS WS02-RMA Rear Muffler Assembly for 2002-2007 Subaru WRX/STI

Vehicle Fitment

• 2002-2007 Subaru Impreza WRX (all trims including base, WRX Limited, WRX TR)
• 2004-2007 Subaru Impreza WRX STI (all trims including STI Limited)

Features

• Performance rear muffler assembly engineered for improved flow and tone
• Direct replacement for factory rear muffler on cat-back exhaust systems
• 304 stainless steel construction for corrosion resistance and longevity
• Larger internal chambers for reduced backpressure and more aggressive sound
• Precision TIG-welded joints for strength and durability
• Designed to complement Turbo XS front and mid-section exhaust components
• Enhances exhaust sound with a deep, refined tone under acceleration
• Direct-fit installation - uses factory mounting points

Specifications

• Part Number: WS02-RMA
• Type: Rear muffler assembly
• Material: 304 stainless steel
• Fitment: Direct-bolt installation on 02-07 WRX and 04-07 STI catback systems
• Compatibility: Works with stock or performance cat-back systems
• Tip Size: Vehicle-dependent exit fitment matching WRX/STI rear bumper cutouts
• Construction: TIG-welded stainless body for strength
• Installation: Uses existing hangers and mounting brackets

Included Components

• 1x Turbo XS WS02-RMA rear muffler assembly
• Mounting hangers and hardware
• Gaskets/clamps required for installation

Product Description

The Turbo XS WS02-RMA Rear Muffler Assembly is a direct-fit performance upgrade designed specifically for 2002-2007 Subaru WRX and 2004-2007 WRX STI models. Built from 304 stainless steel with TIG-welded construction, this rear muffler improves exhaust flow and durability over the factory unit while delivering a deeper, more refined exhaust tone. Its larger internal chambers and optimized flow characteristics help reduce backpressure and enhance turbo efficiency when paired with compatible cat-back systems.

Designed for straightforward installation, the WS02-RMA uses the vehicle's existing mounting points and hardware, making it suitable for both DIY installers and professional shops. Whether used with a full performance exhaust system or as an upgrade to the stock cat-back, this rear muffler assembly gives your Subaru a more engaging sound and improved exhaust performance without sacrificing street usability.