My Garage 
FMF Factory 4.1 / RCT Exhaust Inserts
Are you looking to quiet your muffler down, or possibly add a spark arrestor? FMF offers a full line of quiet inserts, forestry approved spark arrestor inserts and quiet core/spark arrestor insert combos so you can adjust your exhaust to meet your requirements.
Note: Images are for reference only, actual product may vary.
| Product Style | Item # | Manufacturer Product # | Availability |
|---|---|---|---|
| Dual RCT Spark Arrestor Inserts / 2 Piece | 1047077 | 040673 | Out of Stock |
| Factory 4.1 / 4.1C 94db Insert | 1047079 | 40631 | In Stock: Ships next business day |
| Factory 4.1 / 4.1C Spark Arrestor (2010 Models Only) | 894832 | 40261 | Only 1 Left: Ships next business day |
| Factory 4.1 RCT 94db w/ Spark Arrestor | 1047083 | 040639/40639 | Out of Stock |
| Factory 4.1 RCT 94db w/ Spark Arrestor / Turn Down | 1047085 | 40669 | Out of Stock |
| Factory 4.1 RCT Spark Arrestor (2011 Models Only) | 1013908 | 40638 | In Stock: Ships next business day |
| RCT Dual Spark Arrestor Insert (CRF250R 2014-2017) | 1298721 | 40682 | Available: Requires 1-3 business days of lead time prior to shipment |
| RCT Quiet Insert w/ 1-3/8" Spark Arrestor | 1298722 | 40683 | Out of Stock |
| RCT Spark Arrestor Insert (YZ250F/YZ450F 2014-2017) | 1298720 | 40681 | Available: Requires 3-5 business days of lead time prior to shipment |