Home » Milltek Cat Back Exhaust - BMW E9X M3 S65

Milltek Cat Back Exhaust - BMW E9X M3 S65

SKU: MIL-SSXBM931
€1.585,34 incl. VAT
Exhaust tips

The delivery time for products in stock is 1-3 business days.

If the product is not in stock and it is a pre order product, the average delivery time is 5-21 business days. If the product has a longer delivery time than previously announced, we will be in touch.

Terms for product returns:

  • You must return the ordered products within 14 days of receiving
  • The products must be unused and without damages
  • Commission fee for handling returns is 21,90€
  • For product returns, the customer is in charge of the return costs. Only door to door service (Express)
  • Shipping costs are not refunded

For international orders (outside of Europe) sales are final and non-refundable. Once an order is placed, it cannot be canceled or returned. By placing an order, you acknowledge and agree to these terms.

Return address: QT Parts, Vasarakatu 8B, 37150 Nokia, Finland.

Pre order / made-to-order products

If the product you have ordered is a pre order or made-to-order item, it is not subject to the 14-day right of withdrawal or return under consumer protection laws, as the product is manufactured or sourced specifically based on the customer’s individual order.

If you wish to cancel your order before receiving the product, we will refund 50% of the total order amount.

This condition applies to the following product categories:

  • Suspension
  • Engine Tuning
  • Engine Parts
  • Exhaust Systems
  • Fueling
  • Turbochargers/superchargers
  • Drivetrain
  • ECE-approved Downpipes

All of the above products are manufactured or sourced individually based on the customer’s order, and therefore cannot be returned after delivery, unless the product has a manufacturing or material defect.

In the event of such a defect, the standard liability for defects as provided by consumer protection legislation shall apply.

BMW E9X – M3 (E90/E92/E93) · 4.0 V8 S65 · 2007–2011

The Milltek Sport Cat Back exhaust system is designed to enhance the iconic sound of the legendary BMW M3 E9X generation 4.0-liter V8 S65 engine. This engine is known for its high-revving spirit and recognizable, motorsport-inspired sound – and Milltek unleashes it even more powerfully and richly.

The Cat Back system replaces the rear section of the original exhaust system and gives the car a deeper, richer and distinctly sportier sound profile, while maintaining driving comfort and daily usability.

A soundscape that does justice to the S65 V8 engine

Milltek Cat Back offers:

  • Deeper and more powerful sound at idle

  • A full and sporty midrange

  • A clearly sharper and more competitive sound output at top speeds

  • Balanced noise level without disturbing drone

The Kat Back upgrade makes the S65 engine sound the way it was meant to – mechanically responsive, breathing, and alive on the rev scale.

Easy bolt-on installation

System:

  • Installs on the car's original mounting points

  • No welding or structural changes required

  • Is compatible with the car's original rear shock absorber mountings

  • Provides OEM-level fit and finish

The installation is designed to be straightforward and maintenance-friendly.

304L Aircraft Grade Stainless Steel

Milltek's Cat Back system is manufactured from high-quality 304L grade stainless steel, which offers:

  • Long service life and corrosion resistance

  • Optimal heat resistance in heavy use

  • Flow-optimized structure

  • Neat and impeccable finish

The choice of materials makes the system reliable both on the track and in everyday driving.

Fits:

  • BMW M3 E90 – Sedan

  • BMW M3 E92 – Coupe

  • BMW M3 E93 – Convertible

Engine: 4.0 V8 S65
Model years 2007–2011