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minimizing vertical deflection
The kit is completed with Grade 8 hardware
regardless of rear suspension setup
As the control arms are shortened or lengthen the rotate the rear end changing the pinion angle
and enhance handling
1979-1993 MUSTANG 5.0 3 PC PERFORMANCE UNDER DRIVE PULLEY KIT (BILLET ALUMINUM) 2011 Ford Mustang minimizing vertical deflectionInstall a set of BBK performance underdrive pulleys and see an average of 8 15 additional horsepower over the stock pulleys. Under drive pulleys increase engine output by reducing the draw of the engines accessories by slowing them down and reducing the HP they use. Additional and significant performance improvements can be seen by reducing the weight of the pulley versus the original pulley which is why we recommend the BBK CNC Machined billet
