Milltek OPF/GPF-Back Performance Exhaust System for BMW 1 Series F40 128ti 5-Door (2021+, OPF/GPF Equipped) - GT-115 Brushed Titanium Tips - Type 304 Stainless Steel - SSXBM1204

Milltek OPF/GPF-Back Performance Exhaust System for BMW 1 Series F40 128ti 5-Door (2021+, OPF/GPF Equipped) - GT-115 Brushed Titanium Tips - Type 304 Stainless Steel - SSXBM1204

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Milltek OPF and GPF Back Exhaust System with GT-115 Brushed Titanium Trims for BMW 128ti F40 5 Door 2021 onward

Part Number: SSXBM1204

Unlock the sound and presence your BMW 128ti deserves with the Milltek OPF and GPF back exhaust system. Designed specifically for the BMW 1 Series F40 128ti 5 Door 2021 onward with OPF and GPF equipped models, this performance exhaust delivers a crisp, sporty tone without drone, cabin resonance or unwanted NVH. Finished with stunning GT-115 brushed titanium trims, it adds a purposeful, motorsport look to the rear of your 128ti while maintaining everyday refinement.

Why choose Milltek for your BMW 128ti F40

  • UK designed, developed and hand finished by experienced craftsmen
  • Aerospace grade type 304 non magnetic stainless steel throughout pipework, silencers and hardware
  • Mandrel bent tubing for constant radius bends and optimised gasflow
  • Carefully enlarged bore over stock for performance gains without sacrificing mid range torque
  • Comprehensive acoustic development for a sporty, crisp exhaust note with zero drone
  • GT-115 brushed titanium tailpipe trims for a premium, lightweight aesthetic
  • Direct fit OPF and GPF back configuration for OPF and GPF equipped BMW 128ti models

Engineered performance and sound for the BMW 128ti

Milltek’s OPF back and GPF back design focuses on flow efficiency and refined acoustics. The result is a deeper, more engaging tone on throttle with civilised cruising manners. Mandrel bending and precision enlargements to the bore help the engine breathe more freely and support performance, all while safeguarding mid range torque that makes the 128ti so usable on British roads.

Craftsmanship and materials you can trust

Every Milltek system is produced in high quality type 304 stainless steel to resist discolouration and corrosion. From pipework to silencers and brackets, the entire system is built to last. This is a true fit and forget performance exhaust solution for the F40 128ti.

Fitment and compatibility

  • Vehicle: BMW 128ti 5 Door F40
  • Model years: 2021 onward
  • Emissions equipment: OPF and GPF equipped vehicles
  • Tailpipes: GT-115 brushed titanium trims
  • Part number: SSXBM1204

Installation and support

We recommend professional installation. For fitting, choose Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com.

What our customers say

We have supplied and run this Milltek system on 128ti builds and customer feedback has been consistently positive. Owners love the sharper look of the GT-115 brushed titanium tips and the refined, sporty sound with no cabin drone.

Order with confidence

Nforcd is your UK performance exhaust specialist. Buy the Milltek OPF and GPF back system for the BMW 128ti F40 with confidence and transform the sound and style of your 1 Series.

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