9X4 STR 14" O/O 2.5" W/ SPIGOT409 STAINLESS
9X4 STR 14" O/O 2.5" W/ SPIGOT409 STAINLESS for selected vehicle applications. Part STR7700-409 by Redback. $94.99 RRP at SWD. Buy onlin.
Category: Mufflers and resonators

Part specs
- Pipe Size
- 76mm
- Barrel Shape
- Oval
- Barrel Size
- 203mm (8") x 101mm (4")
- Tube Size
- 063mm (2 1/2")
- Configuration
- Offset/Offset
- Internals
- Megaflow
- Length
- 355mm (14")
- Packing
- Glass Packed
- Perforation
- Perforated
- Spigots
- Without Spigots
- Material Type
- 409 Stainless Steel
Workshop note
9X4 STR 14" O/O 2.5" W/ SPIGOT409 STAINLESS | Redback | SWD Australia Product Overview Whether you're chasing dyno numbers, towing torque, or that perfect V8 rumble, the 9X4 STR 14" O/O 2.5" W/ SPIGOT409 STAINLESS is the upgrade your vehicle has been waiting for. The 9X4 STR 14" O/O 2.5" W/ SPIGOT409 STAINLESS is a complete Muffler Universal system manufactured by Redback and distributed by SWD. Designed specifically for Australian conditions, this system replaces your factory exhaust with mandrel•bent piping, high•flow mufflers, and premium•grade stainless steel construction that outlasts and outperforms OEM equipment. Key Features & Benefits • CNC•machined flanges and precision TIG welding for leak•free, factory•like fitment • Dyno•proven power and torque gains across the entire RPM range • Dynamically tuned mufflers deliver an aggressive note under load with minimal cabin drone • Full bolt•on design — no cutting, welding, or fabrication required for installation Vehicle Fitment & Installation Designed as a direct replacement for the listed vehicle application, the 9X4 STR 14" O/O 2.5" W/ SPIGOT409 STAINLESS uses all OEM mounting locations and includes every bracket, gasket, and clamp needed for a straightforward installation. Professional installation is recommended but experienced home mechanics can complete the job in 2•4 hours on a hoist. Performance Benefits The performance gains from the 9X4 STR 14" O/O 2.5" W/ SPIGOT409 STAINLESS aren't just numbers on a dyno sheet — you'll feel the difference every time you accelerate. Reduced backpressure means your engine breathes easier, spools turbos faster, and delivers throttle response that puts a smile on your face. Combined with the weight savings over factory steel exhausts, this upgrade transforms how your vehicle drives. Technical Specifications • Pipe Size: 76mm • Barrel Shape: Oval • Barrel Size: 203mm (8") x 101mm (4") • Tube Size: 063mm (2 1/2") • Configuration: Offset/Offset • Internals: Megaflow • Length: 355mm (14") • Packing: Glass Packed Supplier Information The 9X4 STR 14" O/O 2.5" W/ SPIGOT409 STAINLESS is sourced from SWD (swd.com.au), one of Australia's leading automotive parts distributors. Every unit is backed by SWD's warranty and supported by their nationwide dealer network. SKU: STR7700•409 | RRP: $94.99 AUD | Available from SWD. Where to Buy Available now from SWD at an RRP of $94.99. Order today with confidence — every system is inspected, packed, and shipped from Australian warehouses with full tracking and warranty support.
Fitment support across the Illawarra
Oak Flats Muffler Men can check this part against supplier specs, part number, image, RRP and vehicle details for customers around Oak Flats, Shellharbour, Wollongong, Dapto, Albion Park, Kiama and the northern suburbs.
Book the right exhaust job without guessing.
Send the vehicle make, model, year, engine, current issue, desired sound or performance goal, and clear photos of the existing exhaust where available.
