J's Racing | X304 Axle Back Exhaust System | Honda Civic Type R | FL5 2.0T K20C1 | 2023+

A stainless steel muffler designed with a focus on both power and sound is finally here! It's been a long wait! The long-awaited FL5 stainless steel muffler is finally here!
We've been working on it for a long time,

striving to maximize power output within safety regulations! Crafted from 1.5mm thick stainless steel, it's even lighter than the OEM product! ensures
low exhaust pressure and optimal exhaust flow

The J-Z's signature dolphin tail features two 120mm diameter pipes for a powerful rear view. By reducing the pipe diameter from 75mm to two 60.5mm diameter pipes and using only the main silencer, it actively exhausts the exhaust, achieving both quick boost pressure buildup and extended power at high RPMs, resulting in an approximate 7PS increase!

Experience the powerful exhaust note of a 2.0L turbo engine powered by stainless steel with the HYPER-ECU!

TECH SPEC

• Genuine muffler + HYPER-ECU 349.7PS/53.7KgmZ304 muffler + HYPER-ECU　　356.5PS/54.5Kgm 
• Material: Main section made of SUS, rear tail section made of titanium alloy*J'S product weight: 18.5kg *Our measurements
• Configuration: 75φ→60.5φ×2→120φ×2 Valveless specification*Main pipe, silencer, tail thickness: 1mm
• Includes genuine actuator relocation kit
• Completely designed for each vehicle model

AVAILABILITY

LATE MARCH 2026 RELEASE