Built for the 840i G15 Coupe, the BMW 840i Z Pipe replaces the restrictive factory section to help the B58 3.0T straight...
Built for the 840i G15 Coupe, the BMW 840i Z Pipe replaces the restrictive factory section to help the B58 3.0T straight six breathe more freely. High grade 304 stainless steel with mandrel bent tubing keeps the diameter smooth and consistent through every bend, improving flow while offering excellent resistance to heat and corrosion. With back pressure reduced, the turbo builds boost sooner, giving the grand tourer a sharper throttle response and a stronger pull right through the rev range. The BMW G15 Z Pipe also brings out more of the straight six character, adding a crisp, sporty edge under acceleration that suits the car’s sleek coupe styling, while staying calm and refined on long drives. Precision flanges and clean TIG welds line up with the original mounting points for a direct bolt on fit with no cutting required, making it an ideal upgrade for further tuning.
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Lifetime Warranty
Every DKU Performance exhaust system comes with a lifetime warranty for the original purchaser, providing you with complete confidence and peace of mind for the road ahead.
UK Manufactured
All DKU Performance exhausts are proudly manufactured in the UK using certified grade 304 stainless steel and are TIG welded to ensure a high-quality, durable finish.

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