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Dinan Free Flow Axle-Back Exhaust with Twin Black Tips for BMW 1 Series E82/E88 135i 135is (2008-2013) – Performance Back Box Stainless Rear Silencer/Muffler Upgrade N54/N55 UK

Dinan Free Flow Axle-Back Exhaust with Twin Black Tips for BMW 1 Series E82/E88 135i 135is (2008-2013) – Performance Back Box Stainless Rear Silencer/Muffler Upgrade N54/N55 UK

£1,623.26
£1,623.26
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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.

Unlock a richer soundtrack and sharper response from your 1 Series with this premium rear section from Dinan. Engineered for the E82 coupé and E88 cabriolet, it replaces the factory back box with a freer-breathing, straight-through design that lets your six sing without turning every commute into a drone-fest. The result is a deeper, more purposeful tone under load and a refined, comfortable character at a steady cruise.

Built entirely from high-grade stainless steel for long-term durability in UK conditions, this system uses the original mounting points for an easy, hassle-free, bolt-on install. The twin black tailpipe finishers deliver a stealthy, motorsport look that suits the 1er perfectly, while the optimised internals reduce restriction to help the engine rev more cleanly and feel more eager throughout the rev range.

  • Performance rear section / axle-back upgrade for BMW 1 Series 135i and 135is
  • Stainless construction for excellent corrosion resistance and longevity
  • Twin matte black tailpipe finishers for a subtle, aggressive aesthetic
  • Direct-fit using OEM hangers and hardware for straightforward installation
  • Lower restriction for improved gas flow and a sportier, deeper exhaust note
  • Lighter than the OE back box to help trim unnecessary weight
  • Genuine Dinan quality with precise fitment and OE-level refinement

Compatibility: BMW 1 Series E82 (coupé) and E88 (convertible) 135i, model years 2008–2013, plus 135is (2013). Ideal search terms include BMW 135i performance exhaust UK, E82 sports back box, E88 axle-back system, 1 Series 135is muffler upgrade, twin tailpipe black tips.

Why buy from MJ Modifications: we’ve installed this system on customer cars and our own builds, and the feedback is consistently positive — great tone, quality fit, and a premium finish. As an enthusiast-led UK supplier, we offer quick dispatch and knowledgeable support.

Professional fitting available: book installation with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a tailored quote.

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