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J'S RACING FL5 X304 Stainless Steel Exhaust Muffler 75RS

PRE-ORDER NOW!! ETA 6/2026!

Stainless steel muffler with
a focus on power-up and sound is finally here!


Thank you for waiting for a very long time! The long-awaited FL5 stainless steel muffler is finally completed!
We have been developing how to produce power within safety standards for a long time!

The material is stainless steel 1.5m thick, and it is even lighter than the genuine product!
It has a fully straight structure without aperture and a low exhaust pressure to ensure optimal exhaust flow rate.

Jay's standard dolphin tail adopts 120φ×2 for a powerful rear view. By adding a pipe diameter of 75φ→60.5φ×2 and using only the main silencer, the air is actively exhausted, and by achieving both quick rise of supercharge pressure and extension at high rpm, it achieves an increase of about 7PS!

Please experience the 2.0L turbo + stainless steel exhaust notebook with HYPER-ECU!

Genuine Muffler + HYPER-ECU 349.7PS/53.7Kgm
Z304 Muffler + HYPER-ECU 356.5PS/54.5Kgm *Our measurement value

●Material: Main part made of SUS, rear tail part titanium alloy

●J'S Product weight: 18.5kg *Our measurement value
●Composition: 75φ→60.5φ×2→120φ×2 Valveless specification
- Main pipe, silencer, tail thickness: 1mm
- Genuine actuator relocation kit included
- Complete vehicle model design

Warnings and precautions

*JQR certification (vehicle inspection compliant)

*The color of the tail is done by hand, so it may differ slightly from the product image.


*Repairs of damage due to contact, etc. will be accepted at the actual cost. Please feel free to contact us.

*Power measurements are compared to our company. It is not necessarily a number that meets all the conditions.

X304-L5-75RSL

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