Howe Precision Max Slotted A-Arm - Steel Shaft - 15 Degrees - 9-1/2" 721015 Exhaust port and bolt pattern

Exhaust port and bolt pattern are raised 3/32'' over GM L98 cylinder heads

Mechanical Secondary Holley 4150 / 4150 HP Carburetors

Manifold and controller software updates provided over the air via free mobile app

C2-R12 Valve

Ford Mustang 2003-12

Howe Precision Max Slotted A-Arm - Steel Shaft - 15 Degrees - 9-1/2" 721015 Exhaust port and bolt patternHowe Precision Max a frames offer the same low drag and low friction as other Howe precision products. The sealed dual row ball bearing design allows bind free movement under severe braking conditions or even if the a frame becomes damaged. The easily removable cross shafts are for use with tower mounts. The cross shafts are replaceable and available in three different styles. The ball joint mounting ring is reinforced to prevent flex and distortion