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304 Stainless Flex Couplings — Interlock Liner and Inner Braid

Flex Couplings News

Stainless Steel Flex Coupling

ALL 304 STAINLESS FLEX COUPLINGS — INTERLOCK LINER & INNER BRAID

Our slip-fit braided stainless steel flexible exhaust couplings are great for reducing vibration and stress in your exhaust system. These flexible exhaust couplings feature an all 304 stainless steel braided exterior, internal liner, two-ply flexible stainless bellow, and end caps. Many flexible exhaust couplings on the market today are either all 409 stainless (which is an inferior grade of stainless steel in terms of corrosion resistance) or have a 304 stainless body and 409 stainless end caps. Whereas, our all 304 stainless steel flex couplings are 100% 304 stainless, from the end caps, to the body, the bellow and the liner. Our all 304 stainless steel flex couplings are able to withstand the stress and vibration of an exhaust system, as well as able to withstand daily driving conditions due to their superior corrosive resistance.

INTERLOCK LINER STYLE FLEX COUPLINGS

The interlock style internal liner helps provide a smooth flow for the high temperature exhaust gases passing through the flex coupling. The interlock liner is almost entirely flat and does not intrude into the inner diameter of the flex coupling, which means that the flex coupling does not reduce down on the inside and provides a straight through flow of exhaust gas. Our interlock style liner flex couplings are available with internal diameters ranging from 1.750" to 4.000" and have available lengths of 4", 6", 8" and 10". 

INNER BRAID STYLE FLEX COUPLINGS

Like our Interlock style flex couplings, our Inner Braid style flex couplings helps provide a smooth flow for the high temperature exhaust gases passing through the flex coupling. The braided internal layer is meant to prolong the life of the metal exhaust bellow and help eliminate "whistling". In smaller sizes the inner braid is nearly flat, without protruding into the inside of the flex coupling. However, on larger sizes, typically 3.500" and 4.000" inside diameter, the inner braid can protrude into the inside of the flex coupling, reducing the total inside diameter of the flex coupling. Our inner braid style liner flex couplings are available with internal diameters ranging from 1.750" to 4.000" and have available lengths of 4", 6", 8" and 10". 

FLEX COUPLING USAGE AND WARNINGS

External braided style flex couplings, including interlock liner style and inner braid style, are fantastic options for exhaust system applications, including OEM replacement applications. These flex couplings are durable and affordable option for new exhaust systems and replacement parts; however, they are not suitable for pre-turbo applications. Our exterior braided flex couplings feature either an interlock style liner or an inner braid style liner and are not intended to be used in turbo manifolds or applications where the braided flex coupling is positioned BEFORE the turbo(s). Due to the extreme heat created by the turbo(s) and/or the turbo manifold(s) the internal braided portion, or interlock liner, can degrade and may damage the turbo. We highly suggest using Flex Bellows with a solid inner liner for pre-turbo applications, including turbo manifolds, and wastegate dump tubes. Please note that Ace Race Parts is not responsible for any damage caused by using this braided flex product in pre-turbo applications or if it is placed in the direct line of induction of the turbo(s). 

AVAILABLE SIZES OF INTERLOCK LINER FLEX COUPLINGS

SKU DESCRIPTION
24202
1.750" ID x 4" Long Flex Coupling (Interlock Liner) 304 Stainless
24213
1.750" ID x 6" Long Flex Coupling (Interlock Liner) 304 Stainless
24224
1.750" ID x 8" Long Flex Coupling (Interlock Liner) 304 Stainless
24235
1.750" ID x 10" Long Flex Coupling (Interlock Liner) 304 Stainless
24203
2.000" ID x 4" Long Flex Coupling (Interlock Liner) 304 Stainless
24214
2.000" ID x 6" Long Flex Coupling (Interlock Liner) 304 Stainless
24225
2.000" ID x 8" Long Flex Coupling (Interlock Liner) 304 Stainless
24236
2.000" ID x 10" Long Flex Coupling (Interlock Liner) 304 Stainless
24204
2.250" ID x 4" Long Flex Coupling (Interlock Liner) 304 Stainless
24215
2.250" ID x 6" Long Flex Coupling (Interlock Liner) 304 Stainless
24226
2.250" ID x 8" Long Flex Coupling (Interlock Liner) 304 Stainless
24205
2.500" ID x 4" Long Flex Coupling (Interlock Liner) 304 Stainless
24216
2.500" ID x 6" Long Flex Coupling (Interlock Liner) 304 Stainless
24227
2.500" ID x 8" Long Flex Coupling (Interlock Liner) 304 Stainless
24206
3.000" ID x 4" Long Flex Coupling (Interlock Liner) 304 Stainless
24217
3.000" ID x 6" Long Flex Coupling (Interlock Liner) 304 Stainless
24228
3.000" ID x 8" Long Flex Coupling (Interlock Liner) 304 Stainless
24219
3.500" ID x 6" Long Flex Coupling (Interlock Liner) 304 Stainless
24220
4.000" ID x 6" Long Flex Coupling (Interlock Liner) 304 Stainless

AVAILABLE SIZES OF INNER BRAID FLEX COUPLINGS

24102  1.750" ID x 4" Long Flex Coupling (Inner Braid) 304 Stainless
24002
1.750" ID x 6" Long Flex Coupling (Inner Braid) 304 Stainless
24302
1.750" ID x 8" Long Flex Coupling (Inner Braid) 304 Stainless
24313
1.750" ID x 10" Long Flex Coupling (Inner Braid) 304 Stainless
24103
2.000" ID x 4" Long Flex Coupling (Inner Braid) 304 Stainless
24003
2.000" ID x 6" Long Flex Coupling (Inner Braid) 304 Stainless
24303 2.000" ID x 8" Long Flex Coupling (Inner Braid) 304 Stainless
24313
2.000" ID x 10" Long Flex Coupling (Inner Braid) 304 Stainless
24104
2.250" ID x 4" Long Flex Coupling (Inner Braid) 304 Stainless
24004
2.250" ID x 6" Long Flex Coupling (Inner Braid) 304 Stainless
24304
2.250" ID x 8" Long Flex Coupling (Inner Braid) 304 Stainless
24105
2.500" ID x 4" Long Flex Coupling (Inner Braid) 304 Stainless
24005 2.500" ID x 6" Long Flex Coupling (Inner Braid) 304 Stainless
24305
2.500" ID x 8" Long Flex Coupling (Inner Braid) 304 Stainless
24106
3.000" ID x 4" Long Flex Coupling (Inner Braid) 304 Stainless
24006
3.000" ID x 6" Long Flex Coupling (Inner Braid) 304 Stainless
24306
3.000" ID x 8" Long Flex Coupling (Inner Braid) 304 Stainless
24008
3.500" ID x 6" Long Flex Coupling (Inner Braid) 304 Stainless
24009
4.000" ID x 6" Long Flex Coupling (Inner Braid) 304 Stainless

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