Production Alliance Group 300
The Production Alliance Group 300 is a 300-mile NASCAR Xfinity Series stock car race held at California Speedway in Fontana, California. The inaugural event occurred in 1997. The race is usually scheduled in late March as the fifth event of the schedule and as a support event for the NASCAR Cup Series' Auto Club 400. It has previously been held in October and late April or early May. Harrison Burton is the defending winner of the event, after winning it in 2020.
Past winners
- 2008: Race postponed from Saturday night to Monday afternoon due to rain.
- 2010: Race extended due to a green–white–checker finish.
Multiple winners (drivers)
| # Wins | Driver | Years Won |
| 4 | Matt Kenseth | 1999, 2000, 2003, 2007 |
| 4 | Kyle Busch | 2009, 2010, 2011, 2013 |
| 2 | Greg Biffle | 2004, 2006 |
| 2 | Kyle Larson | 2014, 2017 |
| 2 | Joey Logano | 2012, 2018 |
Multiple winners (teams)
| # Wins | Team | Years Won |
| 7 | Joe Gibbs Racing | 2008, 2009, 2010, 2011, 2012, 2013, 2020 |
| 4 | Roush Fenway Racing | 2004, 2005, 2006, 2007 |
| 3 | Reiser Enterprises | 1999, 2000, 2003 |
| 2 | Cicci-Welliver Racing | 1997, 2001 |
Manufacturer wins
| # Wins | Make | Years Won |
| 8 |  Chevrolet | 1998, 1999, 2000, 2001, 2014, 2015, 2016, 2017 |
| 8 | Ford | 2002, 2003, 2004, 2005, 2006, 2007, 2018, 2019 |
| 7 |  Toyota | 2008, 2009, 2010, 2011, 2012, 2013, 2020 |
| 1 | Pontiac | 1997 |