CTS Turbo Downpipes - BMW F90 M5, M5C & BMW G15/G16 M8, M8C

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.

CTS Turbo CTS Turbo BMW F90 M5/M5C & BMW G15/G16 M8/M8C HIGH-FLOW CATS DOWNPIPES are made to maximize exhaust flow for highest power gains. Do not compromise performance and sound with factory parts.

Designed using the latest in CAD technology; this part is made to fit perfectly in place of restrictive factory Catalytic converter. Manufactured from CAST T304 stainless steel; hand TIG welded and back-purged to ensure years of reliable performance.

In addition to unleashing the power and performance of your 4.4 Twin Turbo, our High-Flow Cats will make your vehicle sound like it really should. When installed with factory exhaust it produces a louder and deeper growl with much more pronounced exhaust "crackle" on downshift. While up-shifting you will enjoy a confident “punch!” as you Bang through all 8 gears. The sound will be even louder if you already have an Aftermarket exhaust system.

Product Details:

• 80mm or 3.15″ diameter Piping
• Cat size: 110mm OD x 90mm Long or 4.33″ OD x 3.54″ Long
• Includes 200 cell sport Catalytic Converter
• Designed and tested on a real car in the real world
• Cast T304 stainless steel, TIG welded back-purged construction
• Replaces restrictive factory Catalytic Converter
• Great power upgrade with uncompromising performance
• Incredible sporty exhaust sound, subtle when cruising
• No drone with factory exhaust

Fitment for M cars only with S63 engine:

• 2018-2024 F90 BMW M5 (Including Competition Models)
• 2019-2024 G15/G16 M8 Coupe, Convertible & Gran Coupe (Including Competition Models)

To remove the CEL that will occur, proper stage 2 tuning software must be used.