Collector Reducers - 1pr 3-1/2in to 3-1/2in Main Stud Kit - Hex

Main Stud Kit - Hex Head - 4-Bolt Mains - Steel - Black Oxide - Big Block Chevy - Kit

25 in Tall - 8 AN Male Outlet - 6 AN Return / Vent - Foam - Plastic - Black - Each

875 in Primary - 3 in Collector - Gaskets / Hardware Included - Stainless - Natural - GM LS-Series - GM Fullsize Truck 1968-74 - Pair

one for high-end overrev protection and another you can activate off a clutch or trans-brake to set a launch limit

Air Induction System - Performance Air Intake System - Reusable Oiled Filter - Plastic - Black - Ford Ecoboost 4-Cylinder - Ford Mustang 2015-23 - Kit

Collector Reducers - 1pr 3-1/2in to 3-1/2in Main Stud Kit - HexCollector Reducer 3. 5 in Inlet to 3. 5 in OD Outlet 3 Bolt Flange Gaskets Hardware Steel Zinc Oxide Pair