18-24 (NU) Softail; 17-25 FLT/Touring (excl. 24-25 FLHX; 2025 FLHXU; 24-25 FLTRX; 23-25 FLHXSE; 23-25 FLTRXSE; 24-25 FLTRXSTSE); 17-25 Trikes. With 558650 S&S Stealth air cleaner kit 1 2 3 ... 20