Milltek Cat Back Exhaust - BMW F87 M2 Competition S55 (ECE approved)

QT Parts is a Finnish online store.

Our warehouse is located in Nokia, Finland.

You can collect your order directly from us if needed. Simply select “Pickup” at checkout.

Pay securely with multiple payment methods, including invoice and installment plans through Klarna.

The delivery time for products in stock is 1-5 business days. We ship worldwide.

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. International orders may be subject to VAT, import duties, and customs fees upon arrival in the destination country.

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 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.

The Milltek Sport Cat Back exhaust system is designed to unleash the full potential of the BMW M2 Competition by delivering a louder, clearer and more dynamic sound that perfectly matches the character of the S55 engine. The Cat Back system improves the sound and flow by replacing the exhaust system after the GPF/OPF filters – without any permanent changes to the car’s structure.

This upgrade is suitable for drivers who want more personality and sporty character in their M2C, both in everyday driving and for leisure performance use.

Note! The exhaust is only ECE approved when the Road variant is selected. All other variants are without ECE approval.

Precisely tuned sound – tailored for the S55 engine

Milltek Cat Back offers:

• Deeper and cleaner bass range

• Sharper throttle response sound

• Motorsport-inspired tone at high revs

• No disruptive drone at cruising speeds

The characteristic sound of the S55 engine comes through in a way that the standard system does not offer.

Bolt-on installation to original mounting points

The system fits perfectly into factory locations without welding or modifications:

• Perfect compatibility with the car's valve control (depending on the selected versions)

• OEM-level fit

• Easy to bolt into place

Milltek designs its Cat Back system with the most discreet installation and premium finish possible.

304L Aircraft Grade Stainless Steel

Milltek's 304L grade stainless steel provides:

• High heat resistance

• Excellent corrosion resistance

• Long service life even under heavy use

• Flow-optimized design and high-quality TIG welding

This material meets both performance and appearance requirements.

Output options

• Polished steel

• Black ceramics

• Titanium

• Carbon fiber coating

This way, the Cat Back system stylishly complements the overall look of the car.

Compatibility: BMW F87 M2 Competition

This Cat Back exhaust system fits the following models:

• BMW M2 Competition (F87)

• S55 engine

• Model years 2018–2025

Not suitable for M2 with N55 engine (2016–2018).