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Real experience
We test before we recommend.
PRODUCT DESCRIPTION
For Audi RS3 owners looking to reach maximum horsepower and torque, or who simply want a fully optimised exhaust system without losing the catalytic converter, the XFORCE 4"-3" downpipe is the solution. Featuring 304-grade stainless steel pipework, the larger diameter downpipe also includes a 100-cell high-flow cat and a stainless steel flex section for easy installation and reliability. Includes all the necessary adapters for installation to an OE exhaust system or an XFORCE cat-back exhaust system. 304 Stainless Steel, Raw finish, 4"-3" Pipework, Stainless Steel flex bellows, 100 cell high flow metallic race catalytic converter, Tuning bung, 3" to OEM size twin pipe adapter, Fitting kit included. Note: This product is equipped with a 200 cSPi sport catalytic converter, which is designed exclusively for circuit use and might not pass the emissions test. Check if high-efficiency catalytic converters are allowed on your country's roads. Xforce offers a range of unique-design and engineered bolt-on stainless steel exhaust systems. These systems bolt directly to existing mounting points, making installation easy. They are manufactured for optimal performance, with materials engineered for durability, and like all Xforce exhaust systems, they look and sound great! Make it roar!










WHY THETUNERLAB
We have spent years building cars, racing, and testing the exact same parts that we sell.
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We test before we recommend.
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We help you choose the right part.
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Only trusted manufacturers.
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Before and after the purchase.
+10 years
of passion for drifting
+30.000
available products
+5.000
satisfied customers
24/7
passion for motoring
Each product indicates compatible models in the product description. If you have any questions, you can contact us and we will help you choose your best option.
-If the product is in stock, the usual delivery time is 2 to 5 working days.
-If the product is out of stock, the delivery time is 7 to 15 working days.
All our products come with the manufacturer's official warranty and comply with current regulations.
Yes. We ship orders to Spain and most European countries using specialized transport agencies.
You can contact our team via WhatsApp, email, or our website's contact form.
Shipping costs depend on the type of product, its weight, dimensions, and the destination country. In most cases, the amount is calculated automatically during the checkout process before the order is finalized.
For some products, especially large items or those with special characteristics, shipping costs may require a manual review. If the amount shown does not match the actual shipping cost, we will contact you before processing the order to inform you of the final cost and request your confirmation before proceeding. We will never charge any additional fees without your authorization.