HKS Super Turbo Muffler Exhaust System Toyota GR Yaris 20+

Ultra-low exhaust pressure due to straight structure A muffler that achieves low exhaust pressure 30% less than the genuine one with a straight structure without throttle, and can handle hard tuning that allows up to about 500 horsepower.
Discerning sound by adopting a silent chamber and optimizing the silencer, the unpleasant sound peculiar to 3 cylinders is reduced, and when you step on it, you can enjoy a powerful sound that is not in the genuine product.

RS (1.5L FF) cannot be installed / GR rear bumper spoiler cannot be installed.

Noise level is around 87 decibels when idling compared to 79 decibels with standard exhaust.