Description

Product Highlights

⚡ Significant Power Gains from Reduced Restriction
This is a core performance upgrade. By itself, it delivers a +5.4kW (+7.3PS) and +4.8Nm gain over the stock catalytic converter. When paired with an HKS Super Turbo Muffler, gains increase to over +10.8kW (+14.7PS) and +14.9Nm. This is achieved by replacing restrictive ceramic cells with 150-cell metal catalysts in both primary and secondary locations, coupled with an increased φ74.7mm pipe diameter (vs. stock φ70mm).

🏆 Certified Emissions Performance
Unlike many “test pipes” or high-flow cats of uncertain legality, this HKS unit has earned official exhaust gas certification from a public testing institution. It utilizes a precise ratio of precious metals within a compact cell structure to ensure excellent purification performance that meets regulations, providing power without compromise.

🔧 OEM+ Integration & Durability

• Heat Shield Compatibility: Designed to allow the reinstallation of the factory heat shield, protecting engine bay components and maintaining a stock appearance.

• Dedicated Brackets: Includes specific mounting brackets for both Manual (MT) and Automatic (AT) transmissions, ensuring a perfect, rattle-free fit.

• Premium Construction: Fabricated from SUS304 stainless steel with meticulous TIG welding and a polished finish for durability and a high-quality appearance under the hood.

🎵 Enhanced Exhaust Character
While maintaining identical decibel levels to stock when used with the factory muffler, the metal catalyst changes the exhaust note’s character, shifting it to a higher, crisper frequency (+300-700Hz). This results in a more spirited, turbine-like sound that complements the G16E-GTS engine. When paired with an HKS muffler, it contributes to a powerful, full-range tone that remains within legal noise limits (93dB).

Technical Specifications & Compatibility

• Product Name: Super Manifold Metal Catalyzer

• Model Code: 33005-AT012

• Compatibility: Toyota GR Yaris (4BA-GXPA16, G16E-GTS, April 2024+ Gen2 ONLY). Compatible with MT and AT. Not for RC grade with 17″ tires.

• Material: SUS304 Stainless Steel

• Catalyst: Dual 150-cell Metal Catalysts

• Pipe Diameter: φ74.7mm

• Weight: 9.2 kg (vs. Stock 7.4 kg)

• Key Feature: Official exhaust gas certification, increased flow.

• Performance (Catalyst Only vs. Stock): +5.4kW / +4.8Nm.

Performance Philosophy

• Goal: To serve as the critical, emissions-legal bottleneck removal in the exhaust system, providing a substantial and reliable power increase that also enhances turbo spool and engine response. The focus is on engineered performance within regulations.

• Focus: The definitive first step in exhaust tuning for the GR Yaris. It is the mandatory supporting modification for anyone seeking to maximize power from turbo tuning, bolt-on mods, or a complete exhaust system, ensuring gains are realized efficiently and responsibly.

■Configuration

Installation & Synergy Notes

• 🔧 Professional Installation Recommended
  Installation involves removing the OEM manifold/catalyst assembly. Professional installation is advised to ensure proper sealing at the turbo and downpipe connections, correct torque on all fasteners, and proper refitting of the heat shield.

• ⚠️ Critical Compatibility & Synergy

  • ONLY for Gen2 (04/2024+) GR Yaris.

  • This component is the perfect partner for the HKS Super Turbo Muffler, creating a fully optimized exhaust path from the turbo back.

  • Highly Recommended for Forced Induction Tuning: HKS strongly recommends this upgraded catalyst when increasing boost/power with the GT2 Supercharger or other tuning to handle increased exhaust gas energy and prevent damage to the stock unit.