Justin Allgaier went from second-fastest in the first Xfinity Series practice Friday to fastest in the second and final practice later in the afternoon.
Allgaier covered the 2.5-mile Indianapolis Motor Speedway layout at 166.485 mph. Matt Tifft was second at 166.291 mph.
Just like he was in the first practice, Kyle Busch was third fastest at 166.162 mph, followed by first practice leader Elliott Sadler (165.883) and William Byron (165.874).
Teams are dealing with several changes for this weekend, including:
- Taller rear spoiler and splitter package
- Aero ducts on the lower front bumper area
- 7/8-inch restrictor plate
Saturday’s Lilly Diabetes 250 begins at 3:30 p.m. ET and will be televised on NBCSN.
Click here for the full practice grid.