Four-cross

Four-cross (4X), also called mountain-cross, not to be confused with fourcross, is a relatively new style of mountain bike racing where four bikers race downhill on a prepared, BMX-like track, simply trying to get down first.

These bikes are generally either full suspension with 140mm to 160mm of travel, or hardtails, and typically have relatively strong frames.

They have slack head angles, short chainstays and low bottom brackets for good cornering and acceleration.

Four-cross was added to the UCI Mountain Bike World Cup and the UCI Mountain Bike & Trials World Championships in 2002, replacing dual slalom.

The four-cross events were removed from the World Championship after the 2021 edition.