Exhaust› Catalytic Converters

HJS

2x 300 CPSI Tuning Catalytic Converter Downpipe

$2,451.00

SKU: 90 81 2010

In Stock
In Stock
Ships by Jul 29
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30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The HJS downpipe is a catalytic converter designed for BMW 1-4 Series vehicles equipped with Euro 6 N55B30A engines. It features two 300 CPSI tuning catalytic converters made of stainless steel and has an ECE approval, meaning no reprogramming of the engine control unit or registration in vehicle documents is necessary. This downpipe reduces exhaust back pressure, leading to lower turbocharger temperatures, improved engine response, and a noticeable increase in power and torque, along with a more sonorous sound.

Fitment

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Specifications

BrandHJS
Part Number90 81 2010
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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