IndyCar has updated the aerodynamic specifications for the July 7 IZOD IndyCar Series race at Pocono Raceway.

After seeking feedback from drivers, engineers and teams on various configurations during testing, IndyCar officials updated Rule 14.6.5.5 as listed in the 2013 IZOD IndyCar Series rulebook, adding the underwing strake to the list of optional parts for the Pocono aerodynamic specification to create more downforce.

Rule 14.6.5.5 Pocono now reads as follows:

Mandatory Parts
    •       Rear Mainplane, 0 > -10.5 degrees
    •       Rear Mainplane Profile
    •       Rear Indy Wheel Guard

Optional Parts
    •       Side Wall
    •       Trimmed Side Wall
    •       Rear Wheel Backing Plate
    •       Sidepod Top Infill
    •       2/3 Radiator Inlet Shutter
    •       Rear Wing Wicker
    •       Underwing Strake