Copyright 2004, Roadracing World Publishing, Inc.

The standing AMA Superstock lap record, set by Josh Hayes in 2003 on a Suzuki GSX-R750 on DOT-labeled tires, is a 1:27.708.

AMA Pro Racing only recognizes times recorded during official timed qualifying sessions toward lap records.

The AMA Superstock class is now run with 1000cc and 750cc production motorcycles on 17-inch slick tires.

Friday Afternoon’s Provisional AMA Superstock Practice Times:

1. Aaron Gobert, Yamaha YZF-R1, 1:27.574
2. Jason DiSalvo, Yamaha YZF-R1, 1:27.643
3. Damon Buckmaster, Yamaha YZF-R1, 1:27.819
4. Ben Spies, Suzuki GSX-R750, 1:27.837
5. Jamie Hacking, Yamaha YZF-R1, 1:27.841
6. Steve Rapp, Suzuki GSX-R750, 1:28.025
7. Vincent Haskovec, Suzuki GSX-R750, 1:28.418
8. Roger Lee Hayden, Kawasaki ZX-10R, 1:28.561
9. Tommy Hayden, Kawasaki ZX-10R, 1:28.705
10. Josh Hayes, Kawasaki ZX-10R, 1:28.751
11. John Haner, Suzuki GSX-R1000, 1:28.759
12. Geoff May, Suzuki GSX-R1000, 1:29.153
13. Alex Gobert, Honda CBR1000RR, 1:29.180
14. Jason Pridmore, Suzuki GSX-R1000, 1:29.196
15. Jake Holden, Suzuki GSX-R750, 1:29.530
16. Eric Wood, Suzuki GSX-R1000, 1:29.580
17. Blake Young, Suzuki GSX-R750, 1:31.318
18. Jason Curtis, Suzuki GSX-R1000, 1:32.100
19. David Weber, Suzuki GSX-R1000, 1:32.223
20. J.J. Roetlin, Suzuki GSX-R1000, 1:33.088
21. Montez Stewart, Yamaha YZF-R1, 1:33.239
22. Christian Pistoni, Suzuki GSX-R1000, 1:33.614
23. Brian Hall, Suzuki GSX-R750, 1:34.674
24. James Kerker, Honda CBR1000RR, 1:35.773
25. Michael Hanley, Suzuki GSX-R1000, 1:36.990
26. Ron McGill, Suzuki GSX-R1000, 1:36.996
27. William Johnson, Suzuki GSX-R1000, 1:37.370
28. Robert Deily, Suzuki GSX-R1000, 1:37.788