Exhaust Muffler / Silencer Rear box with Valves Sports 1 IN 1 OUT DesignTek. Porsche 911 1975-89  ❭  3606001105

DesignTek Sport Exhaust muffler / silencer rear box, with valves, 1 IN 1 OUT
* with tail pipes

The DesignTek 1 IN 1 OUT sports exhaust muffler with valves is a performance-focused upgrade designed for classic Porsche 911 models from 1975 to 1989. Combining modern exhaust technology with the character of air-cooled flat-six engines, this rear silencer enhances sound, responsiveness, and overall driving experience while maintaining a clean, original-style single outlet appearance.

Fits:
Porsche 911 1975 - 1989

Featuring a valve-controlled system, this exhaust allows you to switch between a refined, quieter tone for everyday driving and a more aggressive, free-flowing sports sound when desired. This dual-mode functionality gives you the flexibility to enjoy both comfort and performance in one system.

The 1 IN 1 OUT  configuration retains a classic factory-style look while improving exhaust efficiency. The freer-flowing internal design helps reduce backpressure, supporting improved engine breathing and throttle response. Performance exhaust systems are widely used to enhance both sound and engine efficiency, delivering a more engaging driving experience.

Manufactured using high-quality materials and precision engineering, this DesignTek muffler is built to withstand the high temperatures and demands of air-cooled engines. Designed as a direct-fit replacement, it integrates with existing exhaust components for straightforward installation and reliable fitment. DesignTek exhaust systems are known for combining performance gains, durability, and easy installation, making them a popular upgrade choice.


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3606001105

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