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The Invidia Q300 Cat-Back Exhaust System delivers a refined balance of performance, tone, and build quality for the Ford Focus ST LW/LZ. Designed through extensive R&D and precision 3D scanning, the Q300 system improves exhaust flow while maintaining comfortable noise levels, making it ideal for both street and spirited driving.
Constructed entirely from 304 stainless steel, the Invidia Q300 features smooth 76mm mandrel-bent piping, cast stainless flanges, and TIG robotic welding to ensure perfect fitment and long-term durability. The resonated mid-section reduces unwanted drone while the dual oval-rolled tips provide a clean, aggressive finish. The result is enhanced throttle response, improved power delivery, and a deep, controlled exhaust tone that complements the Focus ST’s turbocharged engine.
Every Invidia exhaust is manufactured to the highest standards and backed by Invidia Australia’s limited lifetime warranty, ensuring lasting performance and confidence for years to come.
Key Features
- 76mm (3") mandrel-bent 304 stainless steel piping
- Resonated mid-section for refined sound control
- Dual oval-rolled polished tips (110mm)
- High-flow Q300 muffler design for power and tone balance
- Precision TIG robotic welds for consistency and strength
- Cast 304 stainless steel flanges for perfect sealing and fit
- Polished finish for a premium OEM+ appearance
- Lifetime warranty from Invidia Australia (conditions apply)
Technical Specifications
- Brand: Invidia
- Product: Q300 Cat-Back Exhaust System
- Material: 304 stainless steel
- Piping Diameter: 76mm
- Piping Thickness: 1.5mm
- Resonated: Yes
- Exit Configuration: Dual
- Tip Diameter: 110mm (oval rolled edge)
- Finish: Polished
- Fitment: Ford Focus ST LW / LZ (2011–2018)
- Warranty: Invidia Australia Limited Lifetime Warranty
- Origin: Japan
Contents
- 1 × Invidia Q300 Cat-Back Exhaust System
- 2 × Polished oval rolled-edge tips
- Gaskets, nuts, and bolts
- Installation instructions
Vehicle Fitment
- Ford Focus ST LW (2011–2014)
- Ford Focus ST LZ (2015–2018)
Compatible with all Australian-delivered Ford Focus ST LW/LZ models.
No instructions available for this product.

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