Milltek OPF Back Exhaust - Audi RS6 C8 4.0TFSI OPF 2019-2025

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 Particulate Filter-back exhaust system is designed to complement Audi RS6 C8 models with the powerful 4.0-litre V8 Bi-Turbo engine and factory-fitted OPF/GPF particulate filter . This exhaust system solution replaces the section of the exhaust system after the particulate filter , improving flow and sound while keeping the original particulate filter in place.

The Particulate Filter-back upgrade provides a deeper, more open and sportier sound without compromising daily drivability or emissions system performance.

Rich and refined V8 sound

Milltek has tuned this exhaust system specifically to improve the sound of OPF/GPF models:

• deeper and fuller sound at idle

• stronger and livelier sound when accelerating

• sporty but controlled sound at high revs

• no annoying resonance or drone when driving on the road

The sound profile emphasizes the powerful and elegant character of the V8 engine in the RS6 C8 models.

Improved exhaust flow and response

Particulate Filter-back exhaust system:

• reduces exhaust back pressure after the particulate filter

• improves throttle response sensitivity and responsiveness

• enhances exhaust gas flow throughout the entire rev range

• preserves the functionality of the original emissions system

This design offers a balanced combination of refined sound and improved performance without compromise in everyday driving.

Easy bolt-on installation

The Milltek Particulate Filter-back exhaust system is designed to:

• to fit directly into the car's original mounting points

• compatible with the chassis and powertrain of the RS6 C8 models

• for installation without welding or permanent structural changes

OEM-level fit and finish ensure a clean and unobtrusive finish.

304L Aircraft Grade Stainless Steel

The system is made of high quality 304L grade stainless steel , which provides:

• excellent corrosion and heat resistance

• long-lasting structure even in intensive use

• flow-optimized internal design

• carefully finished welds

The material and workmanship meet Milltek's premium standards.

Fit

• Audi RS6 C8 4.0 V8 Bi-Turbo

• Audi RS6 Performance Edition C8 4.0 V8 Bi-Turbo

Engine: 4.0 V8 Bi-Turbo
Only for OPF/GPF equipped cars
Model years 2019–2025