Motion Raceworks


4" ID Straight Reinforced Silicone Coupler (Black)

Motion Raceworks - 4000S

Racing Use Only, Not Legal for Road Use


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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!

4" ID by 3" long


Inlet I.D. - 4"

Outlet I.D. - 4"

Length: 3"

Wall Thickness: 0.18"

Burst Strength: 40 psi

Color: Black