Milltek OPF Delete Midpipe - BMW F90 M5 2020-2025

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.

For racing, track and off-road use only. Not for road use without appropriate approvals.

The Milltek Sport GPF/OPF Bypass exhaust system is designed for BMW F90 M5 and M5 Competition models equipped with OPF/GPF particulate filters. This system removes the flow restrictions caused by the particulate filter, unleashing the sound and flow capacity of the S63 V8 engine for maximum performance.

The GPF/OPF Bypass solution completely bypasses the original particulate filter and provides a more open exhaust flow, which improves sound, throttle response and response characteristics in the limit areas.

Maximum, sporty V8 sound

Milltek has tuned the GPF/OPF Bypass system to accentuate the character of the S63 engine:

• Open, powerful and deeper V8 sound at idle

• Sporty and lively sound during acceleration

• Unleashed sound at high revs without the limitations of a particulate filter

• No disturbing resonance in daily driving (when using a suitable silencer solution)

The soundscape is more aggressive and localized, supporting the performance nature of the F90-M5/M5 Competition models.

Improved flow and response

GPF/OPF Bypass solution:

• eliminates the flow resistance caused by the particulate filter

• improves turbo and exhaust system flow

• supports the speed and dynamics of the engine's throttle response

• can support additional power and response with tuning parts and software updates

This is one of the most effective ways to unlock the potential of the exhaust system on the S63 engine.

Direct bolt-on installation

The Milltek GPF/OPF Bypass exhaust system is designed to:

• to fit the car's original mounting points

• to work seamlessly with the F90 chassis and drivetrain

• for installation without welding or permanent changes

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

304L Aircraft Grade Stainless Steel

• 304L grade stainless steel , which offers

  • high corrosion and heat resistance

  • long-lasting service life

  • flow-optimized and durable structure

  • carefully finished TIG welds

The choice of materials meets the premium quality requirements of Milltek products.

Fit

• BMW M5 (F90)

• BMW M5 Competition (F90)

Engine: 4.4 Twin Turbo V8 (S63)
Only for OPF/GPF equipped cars
Model years 2020–2025