FMF Factory 4.1 Muffler 041594 1821-2020 Elsewhere Jersey - Black - XL DWR (Durable Water Repellent) treatment

DWR (Durable Water Repellent) treatment on the on the external shell additional wet weather performance

This exhaust system was developed using the same technology that has powered the Graves Racing Team to 25 Professional AMA National Championships including 9 Superbike Championship titles and 3 Side x Side Pro Titles (Pro Stock and Pro Mod UTV)

Sounds reducing insert included in kit (USDF/USDA approved spark arrester

Stretch accordions on fingers and thumb to increase flexibility and fit

Different sized shims allow one kit to fit many different handlebars

FMF Factory 4.1 Muffler 041594 1821-2020 Elsewhere Jersey - Black - XL DWR (Durable Water Repellent) treatmentFactory 4. 1 muffler available in natural titanium or blue anodized titanium with titanium end caps 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