Milltek Sport OPF/GPF-Back Axle-Back Rear Sports Exhaust/Back Box with GT-115 Burnt Titanium Blue Tips for BMW M135i xDrive F40 5-Door (2019+) | T304 Stainless Steel | UK Made

OPF/GPF Rear Section Exhaust with GT-115 Burnt Titanium Tailpipes for BMW M135i xDrive F40 (2019 onwards)

Give your BMW M135i xDrive F40 a proper soundtrack and a premium look with this UK-built rear section exhaust from Milltek Sport. Crafted from high-grade 304 stainless steel and designed to fit after the factory particulate filters, it delivers a deeper, sportier note and stunning burnt blue GT-115 tips without compromising everyday refinement.

Key benefits

• Bolt-on fit for 5-door F40 M135i xDrive models from 2019 onwards that are OPF/GPF equipped
• Installs after the particulate filter for straightforward fitment while keeping emissions hardware intact
• GT-115 burnt titanium finishers for a motorsport-inspired look that transforms the rear end
• Constructed from premium 304-grade non-magnetic stainless steel for durability and corrosion resistance
• Mandrel-bent tubing and an optimised larger bore for freer gas flow and crisp throttle response
• Developed for a rich, engaging tone with minimal drone and excellent cruising comfort
• Hand finished in Britain for precise fitment and long-term reliability

Why this upgrade stands out

This rear system elevates the M135i driving experience with improved exhaust character and standout tailpipes. The carefully engineered pipework maintains drivability while unlocking an authentic hot-hatch soundtrack. The burnt titanium tips look incredible, resist discolouration and give a genuine performance aesthetic.

Proven by enthusiasts

We’ve supplied and fitted this setup for multiple M135i F40 customers and run the package ourselves. Feedback is consistently positive: excellent fit, premium materials and a deeper, cleaner tone that feels right at home on the xDrive hatchback. It’s a must-have upgrade if you want more presence without unwanted cabin boom.

Fitment and installation

Suitable for BMW M135i xDrive F40 5-door models from 2019 onwards with OPF/GPF. For professional installation, book with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

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Order with confidence: premium materials, UK craftsmanship and a sound that makes every drive more engaging.