Vibrant Performance Straight Reducer Silicone Tubing Coupler - 4 in to 4-1/2 in ID - 3 in Long - Black 41008010 Axle king pin bosses are

Axle king pin bosses are Reemed and Honed for perfect fit

86 Ratio Standard

Fits Stilo ST5

The PN 8920 will correct the operation of most voltage-triggered tachometers that do not work directly off the tach output terminal of the MSD control

Fits 2016-2023 Camaro SS

Vibrant Performance Straight Reducer Silicone Tubing Coupler - 4 in to 4-1/2 in ID - 3 in Long - Black 41008010 Axle king pin bosses areVibrant 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