Exhaust› Exhaust Pipes, Systems and Components

GSTP

4-Inch Downpipe

$159.99

SKU: GSTP-N55-DP

In Stock
In Stock
Ships by Aug 1
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30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The GSTP 4-Inch Downpipe Exhaust is engineered to elevate your vehicle's power output and efficiency by improving engine performance. Its large-diameter, free-flow tubing system ensures unrestricted exhaust flow, which is crucial for high-performance applications and enhances overall engine responsiveness and power. This performance downpipe is designed for specific BMW N55 engine models. It is compatible with: - BMW 535i & 535ix F10 & F11 (2015+) - BMW 535i GT & 535ix Gran Turismo F07 (2015+) - BMW 640i F06 F12 & F13 Coupe & Convertible (2016+) - BMW X5 35iX F15 (2014+) - BMW X6 35iX F16 (2015+) Installation of this downpipe can optimize engine performance, delivering additional horsepower and heightened torque for a more exhilarating driving experience. It is a direct replacement for the stock downpipe, aiming to reduce back pressure and improve exhaust flow.

MIA's Description

The GSTP 4-Inch Downpipe Exhaust is designed to optimize engine performance for compatible BMW N55 models. It features a high-flow, large-diameter tubing system for unrestricted exhaust flow and enhanced engine responsiveness. Chrome-plated flanges provide corrosion resistance.

Fitment

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Specifications

BrandGSTP
Part NumberGSTP-N55-DP
CategoryExhaust

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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