HKS SUPER TURBO MUFFLER FOR GR YARIS GEN2 31029-AT017

Product Code: 31029-AT017

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

The HKS Super Turbo Muffler is a generation-specific, high-performance exhaust system engineered to unlock the acoustic and dynamic potential of the Gen2 GR Yaris. Leveraging development knowledge from the GR Corolla and previous GR Yaris, it masterfully balances a powerful, engaging sport sound with reduced cabin resonance and measurable gains in exhaust flow efficiency. With its signature blue-gradient tailpipes, polished silencer, and integrated anti-sway kit, it delivers a complete upgrade that enhances driving enjoyment, performance, and style.

Product Highlights

🎵 Engineered Sound Character – Sporty Yet Refined
Developed using extensive acoustic data, this muffler actively suppresses unpleasant low-frequency booming and muffled interior sounds during normal cruising. Under acceleration, it releases a rich, powerful bass note and clear sporty tone that accentuates the turbocharged G16E-GTS engine’s character, making every drive more engaging without compromising daily comfort.

⚡ Reduced Backpressure for Real Performance Gains
This is a true performance component. Internal dyno testing confirms a significant reduction in exhaust backpressure, especially at higher RPM, along with measurable increases in horsepower and torque over the stock system. This improved exhaust efficiency liberates the engine, providing a stronger foundation for current and future tuning.

🔧 Gen2-Specific Design & Durability Features

Optimized Layout: Pipe routing, silencer placement, and a true dual-pipe design (φ60.5 x 2) are specifically configured for the Gen2 chassis, ensuring perfect fitment and optimal flow.
Anti-Sway Kit: Includes proprietary HKS rubber stays and a special bracket to prevent lateral movement of the muffler during hard cornering, ensuring longevity and eliminating unwanted vibrations or stress.
Handcrafted Quality: The main muffler is meticulously TIG-welded and finished by hand, showcasing the craftsmanship behind its durable S304 stainless steel construction.

✨ Signature HKS Styling
Features the iconic HKS look with 110mm dual tailpipes in a vibrant blue gradient finish and a highly polished main silencer visible beneath the bumper. This combination adds a striking, high-quality accent to the rear of the vehicle, signaling its performance intent.

Technical Specifications & Compatibility

Product Name: Super Turbo Muffler
Model Code: 31029-AT017
Compatibility: Toyota GR Yaris (4BA-GXPA16, G16E-GTS, April 2024+ Gen2 ONLY). For MT models with rear LSD. Compatible with OEM Aero Performance Package.
Construction: Dual-muffler design (Intermediate + Main). Main material: S304 Stainless Steel.
Tailpipes: 110mm diameter, dual, blue gradient finish.
Performance Data (HKS vs. Stock):
- Max Power: 205.5kW (279.4PS) vs. 203.7kW (277.0PS)
- Max Torque: 398.2N·m (40.6kgf·m) vs. 394.3N·m (40.2kgf·m)
Key Feature: Significant reduction in exhaust backpressure.
Certification: Includes official certification number (JQR30242093).
Weight: 15.7kg

	HKS	genuine
Output [kW(PS)/rpm]	205.5(279.4)/6500	203.7(277.0)/6400
Torque [Nm (kgf・m)/rpm]	398.2(40.6)/4400	394.3(40.2)/4400

Certification number	JQR30242093

car model name	GR Yaris
model	GXPA16
engine type	G16E-GTS
Model year	2024/04 –

Muffler shape		SSR (Super Turbo Muffler)
Main material		S304
Tail Outer Diameter		110 L&R
Intermediate Pipe Diameter		74.7 → 60.5 × 2 (※1)
Nearby exhaust noise	normal	81
Nearby exhaust noise	HKS	91
Ground clearance when installed (※2)	Number	120mm
	Kit target parts	Front Member
	remarks
HKS product weight		15.7kg

Performance Philosophy

Goal: To holistically enhance the GR Yaris driving experience by improving exhaust flow for more power, delivering an exhilarating yet civilized soundtrack, and adding a distinctive visual signature. The focus is on balanced performance—achieving gains that are both felt and heard, wrapped in a package that values refinement and quality craftsmanship.
Focus: The definitive exhaust upgrade for the Gen2 GR Yaris enthusiast. It is designed for drivers who seek a noticeable bump in performance and an intoxicating sound without the drawbacks of drone, all while maintaining perfect factory integration and a show-quality appearance.

Installation & Usage Notes

🔧 Professional Installation Recommended
Installation requires precise alignment and securing of the anti-sway bracket. Professional installation ensures perfect fitment, no leaks, and proper ground clearance.
⚠️ Critical Compatibility Notice
This system is ONLY compatible with the post-April 2024 “Gen2” GR Yaris. It will not fit earlier model years. Verify your vehicle’s production date before purchase