Milltek Road+ GPF-Back - Ineos Quartermaster B58 - Cerakote Black Tips - SSXINE138

Milltek Road+ Part-Resonated Gasoline Particulate Filter-Back exhaust system for the Ineos Quartermaster (B58 petrol). Designed to restore the refined tone compromised by factory GPF technology while delivering improved sound dynamics and aesthetic styling with Cerakote Black tips.

The Quartermaster's B58 engine benefits from a tuned resonance chamber that compensates for the sound-dampening characteristics of the OPF/GPF fitted from late 2018 onwards. This Part-Resonated design maintains a sophisticated character under load while improving full-throttle definition. T304L stainless steel construction with mandrel-bent primary pipes and CNC-formed junctions ensure precision fitment and durability. Cerakote Black polished tips provide integrated styling that complements the factory aesthetic.

• Direct factory fitment - no modifications required
• Part-Resonated chambering for refined tone character
• T304L stainless steel, hand-finished construction
• GPF-back configuration (retains factory particulate filter)
• Cerakote Black polished tips
• EC approved for EU/UK road use

Fits OE system.

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.