High quality 4 ply silicone coupler, black inside and out. 3.5" long


Ideal for big displacement engines with 108mm throttle bodies while mating 4" OD tube. Popular amoungst Chevrolet LS engines.





Reinforced silicone transition, 100mm-108mm ID 4"-4.25"

Add clamps?

    Contact us at Race3 Motorsport to further explore our services. We also offer private label part design, 3D scanning and reverse engineering.

    Niagara Falls, ON