The Custom Muffler TCO3176 is a pure competition-spec, full stainless-steel exhaust system engineered exclusively for pre-2024 GR Yaris and GRMN Yaris Circuit Package models.

Designed for drivers who prioritize ultimate weight reduction and raw auditory feedback, this system delivers an aggressive, unrestricted exhaust character that far exceeds street-legal sound limits, making it ideal for closed-course motorsport applications.

Product Highlights

🏁 COMPETITION-ONLY, HIGH-FLOW DESIGN
This exhaust system is developed strictly for off-road and motorsport use. It is not compliant with any public road regulations, allowing for completely unrestricted exhaust flow and a powerful, race-focused sound profile optimized for track performance.

🔊 AGGRESSIVE RACE-LEVEL SOUND OUTPUT
Engineered for maximum auditory impact, delivering commanding exhaust volume suitable for circuit driving:

• GR Yaris: 95 dB (nearby exhaust noise), 84 dB (idling)

• GRMN Yaris: Competition-level sound output (official figures not listed)
  This setup emphasizes the raw, unfiltered character of the G16E-GTS engine, providing critical auditory feedback under hard acceleration.

🔧 FULL SYSTEM FOR PRE-APRIL 2024 MODELS
Designed specifically for pre-2024 GR Yaris models, this system offers direct bolt-on fitment for both mainstream and limited-production variants:

• GR Yaris RZ (including High Performance, 6MT, AWD)

• GRMN Yaris Circuit Package (6MT, AWD, 18-inch wheels)

⚖️ ULTRA-LIGHTWEIGHT STAINLESS CONSTRUCTION
Manufactured entirely from stainless steel, the system achieves a dramatic weight reduction over the heavy OEM unit, directly benefiting acceleration, braking, and handling dynamics.

• System Weight: 7.3 kg (OEM Reference: 11.9 kg)

• Weight Saved: ~4.6 kg

• Exit: Single right-side outlet with a 90mm tailpipe.

Technical Specifications & Application

This is a competition-use, full stainless steel exhaust system for select Toyota GR Yaris and GRMN Yaris models.

Key Details

• Product Name: Custom Muffler (Competition Use Only)

• Product Code: TCO3176

• JAN Code: 4512355223967

• Stock Status: In Stock

Vehicle Compatibility
GR YARIS (AWD – Pre April 2024)

• Chassis Code: 4BA-GXPA16 (pre-April 2024 production)

• Engine: 1.6L Turbo (G16E-GTS)

• Drivetrain: AWD

• Grade: RZ (including High Performance)

• Model Years: September 2020 – April 2024
  Note: Installation on RC grade has not been confirmed. Not for vehicles produced from April 2024 onward.

GRMN YARIS CIRCUIT PACKAGE

• Chassis Code: 4BA-GXPA16

• Engine: 1.6L Turbo (G16E-GTS)

• Drivetrain: AWD

• Grade: Circuit Package

• Model Years: January 2022 – February 2022
  *Note: Fitment not confirmed for vehicles with 17-inch wheels (Base/Rally Package).*

Construction & Dimensions

• Material: Full Stainless Steel

• Pipe Diameter: 70 mm

• Tailpipe Diameter: 90 mm

• Exit Configuration: Single, Right Side

• Assembly Sections: 2

• Product Weight: 7.3 kg

• Shipping Weight: 11.0 kg

• Packaged Dimensions: 1350 mm × 315 mm × 300 mm