Name: HKS Super Turbo Muffler Ti for GR Yaris 31029-AT010
Availability: InStock

HKS Super Turbo Muffler Ti for GR Yaris 31029-AT010

Product Code: 31029-AT010

Please select per-product shipping when placing the order. This can be shipped via economy air shipping to most parts of Asia, the US, and Europe. However, the territories cannot be covered with this shipping, we may request an additional shipping charge after the buyer places the order.

Description

HKS’s ultimate sports muffler combines lightweight, low back pressure, and quietness at a high level

The exhaust pressure is 30% less than that of the stock exhaust system, and the Super Turbo Muffler could be meeting about 500 horsepower.

Features

We have newly developed the Super Turbo Muffler with the concept of quiet noise and low back pressure using titanium.
We achieved a weight reduction of approximately 9.2 kg, approximately 26% compared to the original muffler’s 12.4 kg.
By adopting a pipe diameter of φ74.7 → φ60.5 x 2, which is the largest diameter (Note 1) for a titanium muffler that is compatible with vehicle inspection for the GR Yaris, and a silencer structure without a restriction, overwhelming exhaust performance is achieved. did. (Note 1: Based on our research as of March 2024)
By adopting a silent chamber and optimizing the silencer, we have reduced the unique sound of 3 cylinders, so that when you step on it, you can enjoy a powerful and pleasant titanium sound.

Certification number	JQR40242001

car model name	GR Yaris
model	GXPA16
engine type	G16E-GTS
Model year	20/09 – 24/03

muffler shape		SSR (Super Turbo Muffler Ti)
Main material		Titanium
Tail outer diameter		110 L&R
intermediate pipe diameter		74.7 – 60.5 x 2 (*1)
Proximity exhaust sound	normal	79
Proximity exhaust sound	HKS	88
Ground clearance when installed (*2)	numerical value	145mm
	Kit target part	intermediate pipe
	Remarks
HKS product weight		9.2kg

・RS grade (1.5L FF) cannot be installed.
・There is no change in minimum ground clearance due to product installation. (Vehicle minimum ground clearance: 118mm Part: Front member)
– Cannot be installed on cars with GR rear bumper spoiler
– Not compatible with GRMN Yaris (due to excessive acceleration noise)
– Cannot be installed on vehicles after MC from 2024/3

Using the lightweight titanium for the Super Turbo Muffler, this product is approximately 9.2kg , approximately 26% lighter than the original muffler’s 12.4kg.
We conducted an analysis when developing the Super Turbo Muffler using titanium.
We have newly adopted an optimally shaped intermediate silencer and branch pipe.

The genuine muffler has a pipe diameter of Φ70 → Φ60.5 → Φ42.7×2 and a bulkhead structure silencer, whereas this product uses a pipe diameter of Φ74.7 → Φ60.5×2 and a straight structure silencer without restriction. As a result, overwhelming exhaust performance has been achieved.

Sound tuning, including the adoption of a silent chamber and optimization of the silencer, suppresses unpleasant muffled sounds and creates a sound quality that highlights the unique sound of titanium.

While maintaining the slit tail shape that is a feature of the Super Turbo Muffler, the tail is made of titanium, engraved with the HKS logo, and has a matte finish with a titanium gradation.
It has specifications suitable for HKS’s highest-end muffler.

About exhaust resistance

*Graphs and numbers are internal measurement results. It varies depending on the measurement equipment and environment.

Comparison of pressure (exhaust resistance) at a constant flow rate

	Flow rate (L/sec)	Pressure (kPa)
STM Ti	200	3.0
genuine	200	10.3

The above graph shows the relationship between flow rate and pressure measured using a flow bench. The lower the pressure relative to the flow rate, the lower the exhaust resistance.
By adopting a pipe diameter of 74.7→Φ60.5×2 and a silencer without throttle, this product has approximately 70% less exhaust resistance than the genuine muffler. (Comparison at flow rate 200L/sec)

Power check results

*Graphs and numbers are internal measurement results. It varies depending on the measurement equipment and environment.

Maximum output, maximum torque, maximum output difference, and torque difference

	output	torque
STM Ti maximum value	206.5kW(280.8PS)/5,920rpm	388.1N・m(39.6kgf・m)/4,300rpm
Genuine maximum value	200.0kW(272.0PS)/5,710rpm	383.2N・m(39.1kgf・m)/4,280rpm
STM Ti-Genuine Maximum difference	16.7kW(22.7PS)/6,510rpm	19.9N・m(2.0kgf・m)/3,520rpm

About sound quality

*Graphs and numbers are internal measurement results. It varies depending on the measurement equipment and environment.

The above graph shows the distribution of the maximum value of each frequency when measuring the proximity exhaust noise of the genuine muffler and this product.
The sound has been tuned so that you can enjoy a powerful, sporty sound while using a silent chamber to suppress the sound in the normal rotation range from becoming unpleasantly muffled.
As for the mid-to-high range, the sound has been tuned to bring out the unique sound quality of titanium, creating a pleasant sound when you step on it.
When combined with METAL CATALYZER (33005-AT011), the noise level is 90 dB (idling volume 69 dB) (Note 2), compared to the proximity exhaust noise regulation value of 96 dB, so you can use it with confidence.
(Note 2: Internally measured value)