The Troy Lee Designs/Red Bull/KTM effort has announced some changes to its 250 Class lineup ahead of Saturday's Circle K High Point National.

Veteran racer Kyle Chisholm will fill-in at JGRMX/Yoshimura/Suzuki Factory Racing at the High Point National for an injured Justin Hill.

MX vs ATV provides a virtual look at the track layout for the Circle K High Point National, Round 4 of the 2019 Lucas Oil Pro Motocross Championship.

Current season statistics heading into the Circle K High Point National, Round 4 of the Lucas Oil Pro Motocross Championship.

Historic statistics for the Circle K High Point National, Round 4 of the 2019 Lucas Oil Pro Motocross Championship.

NBC, NBC Sports, MAVTV, and NBC Sports Gold team up to provide more than 120 hours of Lucas Oil Pro Motocross Championship content in 2019, highlighted by a total of 94 hours of live coverage across broadcast and digital platforms.

The 2019 Lucas Oil Pro Motocross Championship kicks off in just a matter of days. See what's new as the world's most prestigious off-road motorcycle racing series gears up for a summer-long battle amongst the fastest riders on the planet.

The Racer X team continues its dive into the storylines surrounding this summer's Lucas Oil Pro Motocross Championship, this time focusing on the wide open 250 Class.

The team over at Racer X dives into the storylines surrounding the battle for the 450 Class title for this summer's Lucas Oil Pro Motocross Championship.

The Lucas Oil Pro Motocross Championship introduces the Lucas Oil Ladies that will join the world's most prestigious off-road motorcycle racing series for the 2019 season.

The Alpinestars Mobile Medical Unit will be on site at all 12 rounds of the Lucas Oil Pro Motocross Championship for the 2019 season.

Highlights of the 2018 High Point National, Round 4 of the Lucas Oil Pro Motocross Championship.