Monster Energy Graves Yamaha’s Josh Hayes stormed to the fastest lap during Friday practice at round two of the AMA Pro Superbike Championship at Infineon Raceway in California.

Hayes posted a 1:36.397 to edge out arch rival Tommy Hayden (Rockstar Makita Suzuki), while Jordan Suzuki’s Ben Bostrom was third to be the final man in the 1:36 range.

Two more Suzukis in Martin Cardenas and Blake Young were next best to complete the top five before a trio of BMWs filled positions 6-8 with Larry Pegram, Chris Peris and Steve Rapp.

Top Australian was David Anthony in ninth, while Jordan Burgess was 16th and Chris Trounson 17th.

Ducati-mounted Jake Holden topped the Daytona Sportbike timesheet from Yamaha’s Josh Herrin and former champion Danny Eslick.

2011 AMA Superbike Championship
Round Two – Infineon Raceway, CA

Friday Practice:
1. Josh Hayes 1:36.397
2. Tommy Hayden 1:36.508
3. Ben Bostrom 1:36.845
4. Martin Cardenas 1:37.289
5. Blake Young 1:37.516
6. Larry Pegram 1:37.599
7. Chris Peris 1:37.911
8. Steve Rapp 1:37.987
9. David Anthony 1:38.165
10. Roger Hayden 1:38.357
16. Jordan Burgess 1:41.210
17. Chris Trounson 1:41.230