Exhaust bellow is made of stainless steel SS304 or SS321. It can be also made of SS201 as the customer’s request. It is with 2 layers. Few of them are only one layer.

Exhaust bellow is flexible piece of pipe that allows the exhaust system some flexibility. Exhaust Flex pipes are an essential part of any front wheel drive vehicle and on most all wheel drive vehicles. On front wheel cars, since the motor is mounted transversely, when you accelerate the motor rocks and the flex pipe protects your exhaust system from breakage. Without that extra flex the rocking motion would crack the exhaust system causing a loud leak. When only the flex pipe breaks, you need only to change and install a new one. It’s cheap and fast.