The FMF Factory 4.1 Muffler is a slip-on muffler for motorcycle, dirt bike and MX riders who want to upgrade their exhaust outlet. It is designed to be installed as part of a complete exhaust setup.

• Brand: FMF
• Product: Factory 4.1 Muffler
• Manufacturer SKU: 041593
• Part Number: 1821-2019
• Category: Mufflers & Silencers

Always check the manufacturer's fitment information to confirm compatibility with your bike before ordering. Always follow local laws, including noise and spark arrestor requirements, when installing and using this product.

• 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

  2019-2026

  Honda

  CRF110F