NZKW Australia N1 Style Stainless Muffler

Intro
The NZKW Australia N1 Style Stainless Muffler is designed for performance enthusiasts seeking an aggressive exhaust tone with durable stainless steel construction. Built from high-quality SUS304 stainless steel, this N1-style muffler delivers a deep, motorsport-inspired sound while maintaining strength and reliability for both street and track applications. Available in 2.5”, 3”, 3.5”, and 4” sizes, it’s suitable for a wide range of performance builds.

What's Included
• 1 x NZKW Australia N1 Style Stainless Muffler (Size Selected)

Specifications
• Material: SUS304 Stainless Steel
• Type: N1 Style Performance Muffler
• Tip: 2mm stainless steel burnt/straight cut tip (style dependent on size)
• Packing: Stainless steel acoustic packing
• Finish: Brushed stainless / polished style (varies by model)

Size Options & Dimensions

2.5 Inch
• Barrel: 450mm x 100mm
• Overall: 590mm x 100mm
• Inlet: 63.5mm
• Outlet: 102mm

3 Inch
• Barrel OD: 400mm x 100mm
• Inlet: 76mm x 30mm
• Outlet: 114mm x 140mm
• Construction: Full SUS304 stainless steel with straight cut burned tip

3.5 Inch
• Barrel OD: 150mm
• Barrel Length: 400mm
• Inlet: 89mm x 30mm
• Outlet: 114mm x 140mm
• Construction: Full SUS304 stainless steel with straight cut burned tip

4 Inch
• Barrel OD: 150mm
• Barrel Length: 400mm
• Inlet: 102mm x 30mm
• Outlet: 114mm x 140mm
• Construction: Full SUS304 stainless steel with straight cut burned tip

Key Features
• High-quality SUS304 stainless steel construction for long-term durability
• Aggressive N1-style exhaust tone for performance applications
• Designed for improved exhaust flow and reduced restriction
• Heat-resistant stainless steel packing for consistent sound quality
• Available in multiple inlet sizes for wide vehicle compatibility
• Motorsport-inspired design with straight cut burnt tip styling
• Suitable for high-boost turbocharged and naturally aspirated engines
• Strong welds and reinforced construction for performance use
• Ideal upgrade for street and track exhaust systems
• Built for reliability under high heat and sustained load

Compatible With / Applications
• Universal performance exhaust systems
• Turbocharged and naturally aspirated engines
• Drift, drag racing, circuit racing, rally, time attack and motorsport applications
• High-performance street builds
• Custom exhaust fabrication projects

Built for Performance & Reliability
The NZKW Australia N1 Style Stainless Muffler is engineered for drivers who want both performance sound and long-term durability. Constructed from SUS304 stainless steel, it is designed to withstand high exhaust temperatures and demanding driving conditions while maintaining structural integrity and consistent acoustic performance. Its free-flowing internal design reduces backpressure, helping improve engine efficiency in performance applications. Whether used on a street build or a dedicated motorsport vehicle, this muffler delivers a strong