Adapters are critical to proper exhaust system function and for prolonging hose life. A hook and chain holds the adapter in place during use. At least 1/2″ diameter difference between pipe and adapter is required for proper performance.
For oval/twin tailpipes up to 2.5″ x 10.5″. It was designed for ultra-wide pipes on many makes and models.
WHA-4 Wire Hose Adapter with Clamp 4" Inch
F675-SC-2 Oval/Twin Pipes up to 2.5” x 10.5” Fits 3” and 4” Hose 



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