Briggs LO206 Senior (Light / Medium / Heavy)

The Briggs LO206 Senior category is the foundation of grassroots four-stroke karting across the U.S. and Canada. Built around the same sealed 206cc engine platform as its Cadet and Junior counterparts, the Senior division is split into multiple weight classes — Light, Medium, and Heavy — to ensure close, skill-based competition. This class rewards consistency, line discipline, and momentum preservation over raw power. With tight technical regulations and minimal engine tuning, drivers compete on an equal playing field. It’s a staple of major series like Cup Karts North America (CKNA), USAC Karting, and dozens of club-level programs nationwide. In KartSim Pro North America, the LO206 Senior engine is fully recreated with precise powerband mapping, clutch behavior, and weight-class effects, allowing drivers to practice in realistic Light, Medium, or Heavy configurations. Ideal for sim-based prep, testing, and strategy refinement.