O'Neill Brothers Racing

OBR POWER STACK / VELOCITY STACK (Aluminum)

OBR power stack is compatible with most aftermarket clamp on air filters. This is a bolt on performance item that will improve power on any engine that's stock or fully modified. OBR spent several months developing this stack on their in-house flow bench and dyno. They saw more power out of this design than any other stack that we have tested. Dyno graph can be found in the images. Tapered bore increases velocity through the intake tract and gives better…

Manufacturer

O'Neill Brothers Racing

Model

af515