Milltek Sport Cat-Back Exhaust with Rear Silencer (Back Box) for BMW 1 Series M135i (F20/F21) 2012-2016 Non-xDrive | Stainless Steel Performance System
Milltek Sport Cat-Back Exhaust with Rear Silencer (Back Box) for BMW 1 Series M135i (F20/F21) 2012-2016 Non-xDrive | Stainless Steel Performance System
Milltek Sport Cat-Back Exhaust with Rear Silencer (Back Box) for BMW 1 Series M135i (F20/F21) 2012-2016 Non-xDrive | Stainless Steel Performance System
Milltek Sport Cat-Back Exhaust with Rear Silencer (Back Box) for BMW 1 Series M135i (F20/F21) 2012-2016 Non-xDrive | Stainless Steel Performance System
Milltek Sport Cat-Back Exhaust with Rear Silencer (Back Box) for BMW 1 Series M135i (F20/F21) 2012-2016 Non-xDrive | Stainless Steel Performance System
Milltek Sport Cat-Back Exhaust with Rear Silencer (Back Box) for BMW 1 Series M135i (F20/F21) 2012-2016 Non-xDrive | Stainless Steel Performance System
Milltek Sport Cat-Back Exhaust with Rear Silencer (Back Box) for BMW 1 Series M135i (F20/F21) 2012-2016 Non-xDrive | Stainless Steel Performance System
Milltek Sport Cat-Back Exhaust with Rear Silencer (Back Box) for BMW 1 Series M135i (F20/F21) 2012-2016 Non-xDrive | Stainless Steel Performance System
Milltek Sport Cat-Back Exhaust with Rear Silencer (Back Box) for BMW 1 Series M135i (F20/F21) 2012-2016 Non-xDrive | Stainless Steel Performance System
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Milltek Sport Cat-Back Exhaust with Rear Silencer (Back Box) for BMW 1 Series M135i (F20/F21) 2012-2016 Non-xDrive | Stainless Steel Performance System

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BMW M135i F20 F21 Cat-Back Exhaust by Milltek Sport | 2012–2016 | Non‑xDrive

Unlock the sound and response your BMW 1 Series deserves with the Milltek Sport cat-back and rear silencer exhaust system for the BMW M135i F20 and F21 (2012–2016, non‑xDrive). This performance exhaust upgrade delivers a deeper, sportier exhaust note and sharpened driving feel, all while retaining the factory catalytic converter for a straightforward cat-back upgrade.

Why choose this Milltek M135i exhaust

  • Designed specifically for BMW M135i F20 and F21 non‑xDrive models for a precise, direct fit.
  • Cat-back exhaust system with rear silencer for an aggressive, motorsport-inspired tone under load and a refined soundtrack on cruise.
  • Premium lightweight stainless steel construction for durability, corrosion resistance and performance.
  • Engineered to enhance flow, throttle response and overall driving engagement.
  • Developed by Milltek Sport for quality, consistency and long-term reliability.

Key features and benefits

  • BMW M135i performance exhaust upgrade for 2012, 2013, 2014, 2015, 2016 models.
  • F20 and F21 1 Series hatchback compatibility (non‑xDrive only, RWD).
  • Sporty, rich exhaust tone that complements the character of the M135i.
  • Retains the factory catalytic converter for a true cat-back solution.
  • Precision fitment designed for OE-style installation.

Specifications

  • Application: BMW M135i F20/F21 2012–2016, non‑xDrive only.
  • Material: High-quality lightweight stainless steel.
  • Configuration: Cat-back system with rear silencer.
  • Sound profile: Deeper, more aggressive exhaust note with everyday usability.

Compatibility

  • BMW M135i F20 (2012–2016, non‑xDrive)
  • BMW M135i F21 (2012–2016, non‑xDrive)

Real-world feedback

We’ve installed this Milltek M135i cat-back for customers and the feedback is consistently positive: excellent build quality, a proper soundtrack without being over the top, and a noticeable uplift in driving character. It is a go-to M135i exhaust upgrade for owners wanting more sound and feel from their BMW 1 Series without compromising day-to-day use.

Professional fitting

Want it fitted by specialists? Book professional installation with Nforcd in Warwickshire. Request a fitting quote: Sales@nforcd.com.

Helpful search terms

If you’re looking for this item, you might be searching: BMW M135i exhaust, M135i cat back, M135i F20 exhaust, M135i F21 exhaust, BMW 1 Series M135i performance exhaust, Milltek M135i exhaust, stainless steel catback, rear silencer, back box, BMW M135i 2012–2016 non‑xDrive exhaust upgrade.

Note: Not suitable for xDrive models. Part number not provided by manufacturer in this listing.