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Motion Raceworks


3.5" to 4" ID Transition Reinforced Silicone Coupler (Black)

Racing Use Only, Not Legal for Road Use

8 items left

Silicone Reinforced couplers for turbo and supercharged applications!  These 5 layer couplers are proven, tested, and reliable!  These are the same couplers we use on all of our own builds.

3.5" to 4" ID Transition by 3" long


Inlet I.D. - 3.5"

Outlet I.D. - 4"

Length: 3"

Wall Thickness: 0.18"

Burst Strength: 40 psi

Color: Black