Vibrant Performance Straight Reducer Silicone Tubing Coupler - 4 in to 4-1/2 in ID - 3 in Long - Black 23-TR1-N-L offset +22 and the hub

offset +22 and the hub bore is 78

designed to fit the base of your helmet and allows greater air circulation around the neck

Leak Free Seal

360 Degree Release

Data Logger Thermocouple Amplifier Interface

Vibrant Performance Straight Reducer Silicone Tubing Coupler - 4 in to 4-1/2 in ID - 3 in Long - Black 23-TR1-N-L offset +22 and the hubVibrant Performance Aramid Reinforced Silicone Transition Hose Couplers feature a smooth and effective transition from one inlet diameter size to another. This coupler is intended for use in applications where a reduction or increase in diameter is needed. Our Transition Hose couplers are commonly found off of turbo compressor housings, intercooler end tanks and charge pipe assemblies. Rated for temperatures ranging from 65 degreesF to 350 degreesF