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BLOX Racing 4.0" velocity stack in anodized blue is an aluminum intake stack with a 6" outer diameter and a 4.0-inch height described for installations needing a taller inlet profile. The anodized finish is noted, and the stack is presented as an intake accessory to smooth airflow into the intake tract while providing a distinctive blue appearance for visual matching.
BLOX Racing 4.0in Velocity Stack Aluminum Anodized Blue 6in OD
