FMF 041602 - FMF Factory 4.1 Silencer For Honda CRF450R 2021-2025

Features: The lightest mufflers available. Superior power and performance - horsepower improved throughout the rpm range. Feature exclusive proprietary Chamber Core technology. Factory Forward Engineering centralizes mass, improves handling. Made from premium quality American materials. Customize with performance tuning inserts and spark arrestor module. Meet AMA sound requirements on most models; inserts available for others. NOTE: Will not pass 2025 FIM sound regulation.