AMA Superbike Speeds (as measured by AMA Pro Racing at start/finish during Friday morning practice at California Speedway): 1. Eric Bostrom, Ducati 999F05, 184.64 mph 2. Ben Spies, Suzuki GSX-R1000, 180.35 mph 3. Kurtis Roberts, Honda CBR1000RR, 179.81 mph 4. Miguel Duhamel, Honda CBR1000RR, 179.61 mph 5. Marty Craggill, Suzuki GSX-R1000, 179.30 mph 6. Neil Hodgson, Ducati 999F05, 178.49 mph 7. Jake Zemke, Honda CBR1000RR, 178.30 mph 8. Mat Mladin, Suzuki GSX-R1000, 178.11 mph 9. Geoff May, Suzuki GSX-R1000, 177.92 mph 10. Aaron Yates, Suzuki GSX-R1000, 177.54 mph 11. Brent George, Suzuki GSX-R1000, 176.75 mph 12. Larry Pegram, Honda CBR1000RR, 174.56 mph 13. Steve Rapp, Suzuki GSX-R1000, 174.52 mph 14. Josh Hayes, Kawasaki ZX-10R, 174.34 mph 15. Mark Ledesma, Suzuki GSX-R1000, 174.30 mph 16. Chris Ulrich, Suzuki GSX-R1000, 174.27 mph 17. Eric Wood, Suzuki GSX-R1000, 173.97 mph 18. Tony Meiring, Suzuki GSX-R1000, 173.94 mph 19. Heath Small, Yamaha YZF-R1, 173.54 mph 20. Jake Holden, Suzuki GSX-R1000, 173.36 mph