We offer a huge selection of 1974 VW Thing Performance Exhausts. We offer complete exhaust systems, as well as replacement exhaust components such as replacement tips, heater boxes, j-tubes, installation hardware, and more.

Our performance exhausts for your 1974 Volkswagen Thing are offered in stainless steel for a long lasting, rust-free finish or in silver ceramic coating that looks great and keeps your engine cooler by reflecting heat back into the exhaust tube.

We have plenty of VW Performance Exhaust options available. Choose between throaty, deep sounding exhausts or quiet muffler systems. Choose from our wide variety of mounting options. Also, choose whether you want to maintain your heating system or bypass it. View instructions for maintaining your heating system at the bottom of this page.
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How to Retain Your Cabin Heater When Installing a Performance Exhaust System

Your cabin heater and defroster will be disabled when installing most performance exhaust systems. This is because the connection between the fan shroud and the heater box is lost with the removal of the stock exhaust. To retain the use of your cabin heater and defroster, follow the simple instructions below. You may click on each image to enlarge.



Stock Exhaust Schematic

This is a diagram of an engine with the original stock exhaust. Note how the heater hoses end at the rear engine tin, just at the top of the stock exhaust.







Heater Box Diagram

The portion circled in red on this diagram depicts the connectors that will be lost when the stock exhaust is removed. It is these lost connectors that need to be addressed by installing new fan shroud heater duct hoses. In order to accomplish this, remove the stock exhaust system, leaving the heater boxes.





Tip: The heater boxes will need to be loosened to assist in the installation of the new performance exhaust system. We recommend replacing gaskets at this time.



Performance Exhaust Schematic Once the new performance exhaust system is installed, you will need two uncut heater hoses. Follow these steps:
1. Install the new heater hoses on the fan shroud heater ducts.

2. Stretch the hoses down, bypassing the original exhaust section. Special care should be taken when routing the hoses so that it does not touch the new exhaust heater tubing. This could cause the hoses to be burned.

3. Clamp the hoses directly to the heater box intake ports.



Please Note: Due to the heat generated by the engine, these hoses will need to be replaced from time to time. It is best to route the hoses as far from the header system as possible to minimize heat damage.

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