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AFM Round 4

Saturday, September 27, 2025 8:00 AM - 5:00 PM
The Countdown is On! Mark your calendars... AFM Round 4 hits Thunderhill Raceway September 27th and Team Sierra Steel is ready to throw down! Local riders. Big talent. One legendary track. Don’t just hear about it, be trackside, catch the action, and cheer on Sierra Steel Harley-Davidson® as we go full speed into one of California’s most adrenaline-packed race weekends.