Flex couplers are used to isolate engine vibration to your exhaust components, and prevent cracks in your downpipes, cat-backs headers and turbo manifolds. We have introduced Stainless Steel Flex Couplers that have bellows with interlocking lining to help increased exhaust flow through the coupler, and prevent excessive back pressure to build. These are the only type of flex coupler that can withstand high pre-turbo exhaust temperatures, meaning you can use these flex couplers when complex turbo header designs are needed to prevent turbo header cracks. Perfect for turbo downpipes! We use stainles throughout which means it will NEVER rust! Competitiors products that don't mention this use stainless that will rust!
Specification:
Color:Silver
Material:201 Stainless Steel
Inlet/Outlet: 2" ID
Bellow Longth:4''
Overall Length:8"
Package include:1 exhaust flex pipe+2 brackets
What is a Flex Pipe?
A flex pipe, also sometimes known as a flex coupling, is a section of bellowed steel that is designed to absorb vibrations from the engine and from the motion of the vehicle, which prevents other components from being broken or cracked. Some parts of the exhaust system such as exhaust manifolds,( 59100029,which are often made of cast iron) are brittle and easily break. Flex pipes prevent these components from being exposed to excessive stress.
How to use this Flex Pipe
Measure the outside diameter (OD) of your exhaust pipe where you will be installing the flex pipe. Then, measure the length of the flex pipe that you are replacing (do not only measure the visible flex portion, flex pipes are always measured from weld to weld). Once you have these dimensions, use the chart above to determine the proper part # to purchase. Some flex pipes come with the option of pipe extensions already welded on to the flex. Extensions give you the option to expand the pipe size, if needed, for those odd-ball sized exhaust systems. Extensions allow for easier installation in some situations, and also allow for clamping. However, we always recommend welding to ensure a proper seal. Please note: flex pipes without extensions CANNOT be clamped, and must be welded. If your application requires a flex pipe next to an exhaust flange, DO NOT weld the flex pipe directly to the flange. Instead, weld it to exhaust pipe and weld the pipe to the flange. Flex pipes are NOT intended to replace bends such as those found in tailpipes. Flex pipes are NOT intended to be installed near the engine as it will cause it to overheat. Such use is likely to damage the flex and is NOT covered by warranty.
Bear River Flex Pipes
Flex pipes can be made from a variety of different materials and can also differ in their construction techniques. Some companies use ordinary steel and/or may use aluminized steel (ordinary steel with an aluminum-based coating) which can rust and corrode. These materials typically do not last very long compared to stainless steel. Additionally, many competitors will crimp the fittings together, which allows water to become trapped in the crimped joint, encouraging corrosion. Some flex bellows are formed as a continuous helix, which can create exhaust turbulence and, in general, indicates that poor construction techniques are used. Competitors also have a loose braid pattern on the outer coverings (and inner coverings, if even present), which allows the flex to stretch too far, causing premature failure.
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