Milltek Non-Resonated GPF-Back Exhaust - INEOS Quartermaster - Polished Tips - SSXINE120

The Milltek Non-Resonated GPF-Back Exhaust System is engineered for the INEOS Quartermaster, replacing the factory gasoline particulate filter-back configuration with a direct-fit performance alternative. Mandrel-bent T304L stainless steel construction delivers improved exhaust flow and a more aggressive tone character without resonance damping.

This system features premium polished tips with hidden clamps and requires cutting of the original equipment system. The 2.75" (70mm) bore facilitates optimal scavenging for potential horsepower and torque gains. Hand-finished construction and CNC-formed components ensure OEM+ fitment quality across the range of Quartermaster variants.

• Material: T304L stainless steel, hand-finished
• Bore: 2.75" (70mm) mandrel-bent
• Configuration: Non-resonated GPF-back (track/closed-course recommended)
• Tip finish: Premium polished with hidden clamps
• Installation: OEM hangers used; cutting of factory system required

Every system undergoes decibel and flow validation before dispatch, ensuring authentic performance tone and durability across road and track use.

Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.

Specifications

• Pipe diameter: 70mm (2.76")
• Fitting time: 1 to 2 hours, including removing the factory system

Fitment

• INEOS > Quartermaster > 3.0 (B58) Petrol (OPF & Non-OPF Vehicles) > 2024 and Later

• Free US shipping on orders over $250.
• Free pickup at our Dallas shop, usually ready within 24 hours.
• Unused parts can be returned within 30 days. Tunes, opened electronics, merch and installed parts are final sale.
• Want it installed? Book the install at thegbmotors.com.

Full details are on our shipping and returns page.