The SolSteer Agri-Steer Kit (K/KR/002) with yield mapping fits Krone BiG X 480, 530, 580, 630, 680, 780, 880, 980 and 1180 forage harvesters. It integrates John Deere AutoTrac guidance using the factory steering system on steer-ready machines. The Krone ISOBUS steering unlock is required, and the Krone datalogger option is required for yield mapping.