Pors**e 991.1 3.4L/3.8L 2012-2015 Upgrade Competition Exhaust Header

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Product Overview


Product Description

We are pround to introduce our this

Competition Header Pors**e 991.1 3.4L/3.8L 2012-2015

Offering the greatest gains in power and sound, our Competition Headers for the Pors**e 991.1 3.4L/3.8L 2012-2015 are an excellent performance upgrade from the heavy and restrictive stock manifolds. You’ll notice the weight savings, decreased operating temperatures, and improved engine response all while separating your car from the crowd with the increase in tone from MerTop Racing's Competition Headers.


  • Pors**e 991.1 3.4L/3.8L 2012-2015

Product Paramenters

Exhaust header
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Pors**e 991.1 3.4L/3.8L 2012-2015
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Product Details:
  • * Adds 27 whp and 26 ft-lbs of torque at 6500rpm
  • * Saves 4 lbs from the rear of the vehicle
  • * Constructed from equal-length T304 stainless steel CNC. mandrel-bent tubing for improved torque and equalized engine pulsing
  • * More power and torque across the RPM band and dramatically improved sports car sound
  • * Gaskets are included for a leak proof seal 

02 Spacers included:
The 991 Carr**a Race Header do not include catalytic converters, and are recommended for track/off-road use only. MerTop's header with 02 Spacers are available to prevent the Check Engine Light from being triggered.

Installed car tested fitment
Make sure 100% fits!!!

Product packaging

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Factory Profile

MerTop Racing Co.,LTD

specializing in the design and manufacture of exhaust systems for aftermarket and modified market applications. The company is equipped with 14 bending machines, 3 of which are CNC servo motor tube bending machines that are capable of bending stainless steel tubes with diameters up to 5.5 inches, and possesses laser cutters, water jet cutters, cyber-welders, CNC production centers, CNC grinders, millers and other hydraulic machines, with an annual production capacity of approximately 120,000 sets. In 2018, MERTOP RACING manufactured 80,000 sets, 90% of which were exported to Euro-American and Australian markets. MERTOP RACING also holds shares of one other company whose products include intercoolers, radiators, oil coolers. 

Since 2010

MERTOP RACING has been supplying the global market with exhaust system products with more than 1000 different models ,and with superior technical innovation .Giving their customers exceptional sales, and enabling versatility for all their needs. 


MERTOP RACING has always been serving its clients with high quality products in most reasonable prices.  We, as MERTOP RACING, are proud of the unique features of our products, constant innovation in techniques. Hundreds of new items are developed by ourselves and our partners ,all of which are protected by exclusive contracts and patents.

Our Team

Mertop vision
To become the leader of exhaust  modification industry and the creator of industry standards
Mertop mission
To provide customers with quality products and services, create a better life for employees, and create value for the society
Mertop tenet
Quality for survival, reputation for development, quality first, reputation first,   honesty oriented, win-win cooperation, pragmatic innovation, sustainable  development.


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