The Regu.06&R (B22354W) is a comprehensive JQR-certified dual center exhaust system engineered for two generations of Subaru performance.

Designed to comply with Japan’s 2010 Acceleration Noise Regulation, it delivers an enhanced, aggressive sound and optimized flow for both the iconic EJ20-powered WRX STI and the FA20-equipped WRX S4, providing a street-legal performance upgrade..

Product Highlights

🔰 DUAL-PLATFORM JQR CERTIFICATION
This exhaust system is officially JQR-certified (JQR40153007), guaranteeing performance, fitment, and compliance for both listed platforms. It is engineered to meet strict 2010 Acceleration Noise Regulations, making it a verified legal upgrade for public roads.

🔊 PLATFORM-TUNED SOUND PROFILES
Delivers a distinct, sporty exhaust character tailored to each compatible model, measured within legal limits:

For WRX STI (EJ20):

• Nearby Exhaust Noise: 92 dB

• Idling Noise: 74 dB

For WRX S4 (FA20):

• Nearby Exhaust Noise: 87 dB

• Idling Noise: 61 dB

This ensures an engaging and appropriate auditory enhancement for each engine’s characteristics.

🔧 COMPLETE DUAL CENTER PIPE SET
A complete 3-piece “rear piece + dual center pipe set” designed as a direct bolt-on replacement. This system provides a full exhaust path upgrade, improving performance and delivering a commanding dual-exit aesthetic for both sedan and wagon body styles.

🏗️ LIGHTWEIGHT STAINLESS STEEL CONSTRUCTION
Manufactured from durable stainless steel, the system offers significant weight savings over the heavy stock exhausts:

• System Weight: 16.7 kg (OEM reference: 22.6 kg)

• Features a 170mm diameter round seamed muffler drum and dual 100mm tailpipes.

Technical Specifications & Application

This is a JQR-certified, street-legal full stainless steel dual exhaust system for multiple Subaru platforms.

Key Details

• Product Name: Regu.06&R Dual Center [’10 Acceleration Noise Regulation Compliant Model]

• Product Code: B22354W

• JAN Code: 4512355209442

• Stock Status: In stock

Vehicle Compatibility
WRX STI (6MT)

• Chassis: CBA-VAB (Acceleration noise regulation applicable vehicle)

• Engine: 2.0L Turbo (EJ20)

• Drivetrain: 4WD (AWD)

• Grade: STI (including Type S)

• Transmission: 6MT

• Model Years: August 2014 – April 2020

• Note: Fitment for S207, S208, and TYPE RA-R models is not confirmed and is not JQR-certified.

WRX S4 (CVT)

• Chassis: DBA, 3BA-VAG (Acceleration noise regulation applicable vehicle)

• Engine: 2.0L Turbo (FA20)

• Drivetrain: 4WD (AWD)

• Grade: 2.0GT(-S) EyeSight, STI Sport EyeSight (including tS & STI Sport models)

• Transmission: CVT

• Model Years: August 2014 – March 2021

Construction & Dimensions

• Material: All Stainless Steel

• Pipe Diameter: 60-50W

• Muffler Drum Diameter: 170 mm

• Tailpipe Diameter: 100 mm

• Exit Direction: Dual, Left & Right

• Number of Sections: 3

• Unit Weight: 16.7 kg

• Packaging Size: 2200 × 350 × 784 mm

• Packaging Weight: 26.7 kg