Milltek Sport Secondary Cat-Back Exhaust for BMW 135i E82 Coupe & E88 Cabriolet (N54) 2008+ | UK-Made 304 Stainless Performance System

Milltek Sport Secondary Cat-Back Exhaust for BMW 135i E82 Coupe & E88 Cabriolet (N54) 2008+ | UK-Made 304 Stainless Performance System

£1,069.35
£1,069.35
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Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

Milltek Secondary Cat-back Exhaust for BMW 135i E82 and E88 N54 2008 onwards

Upgrade your BMW 135i with a Milltek Secondary Cat-back exhaust system designed specifically for the 135i Coupe E82 and Cabriolet E88 with the N54 twin turbo engine. Hand-finished in the UK, this performance exhaust uses aerospace grade type 304 non-magnetic stainless steel throughout for long-lasting durability, outstanding corrosion resistance and a premium finish that looks as good as it sounds.

Engineered for performance, the Milltek cat back system features mandrel-bent pipework for constant-radius bends and optimised gas flow. Bore diameters are carefully increased over stock to enhance response and flow without sacrificing mid-range torque. Every Milltek system undergoes detailed acoustic development to deliver a sporty, crisp BMW 135i sound with minimal NVH and no unwanted cabin drone.

Why choose this Milltek BMW 135i cat-back

  • Premium UK-made performance exhaust for BMW 135i E82 and E88 N54 2008 onwards
  • Aerospace grade type 304 stainless steel construction for strength and longevity
  • Mandrel-bent pipework for smooth, unrestricted gas flow
  • Enlarged bore over OEM for improved response while maintaining drivability
  • Refined, sporty exhaust note with crisp tone and minimal drone
  • Directly developed for the BMW 135i Coupe and Cabriolet platforms

Perfect fitment for BMW 135i owners

Fitment is tailored for the BMW 135i E82 Coupe and E88 Cabriolet with the N54 engine from 2008 onwards. This Milltek cat back exhaust is the ideal upgrade for enthusiasts searching for BMW 135i exhaust, BMW 135i cat back, BMW 135i E82 exhaust, BMW 135i E88 cabriolet exhaust, N54 exhaust upgrade, Milltek 135i exhaust, and UK stainless steel performance exhaust solutions.

Proven quality you can trust

We have used and fitted this system ourselves and our customers love the sound quality, fit and finish. It is a go-to choice for anyone wanting a refined yet sporty BMW 135i exhaust tone with premium materials and expert UK craftsmanship.

Fitting and support

We recommend professional installation. Nforcd offers fitting in Warwickshire. Request a fitting quote by emailing Sales@nforcd.com.

Key search terms

BMW 135i exhaust, BMW 135i cat back, BMW 135i E82 exhaust, BMW 135i E88 exhaust, N54 exhaust, N54 cat back, Milltek 135i, Milltek catback, BMW 135i performance exhaust UK, stainless steel cat back, 2008 BMW 135i exhaust upgrade.

Order your Milltek Secondary Cat-back for the BMW 135i today and enjoy the perfect blend of performance, sound and durability.