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FMF FACTORY 4.1™

FMF FACTORY 4.1™

FMF
From: $337.96 to $675.96



  • Complete systems and slip-on mufflers
  • Systems feature titanium PowerBomb header and midpipe, except where noted
  • Slip-on muffler available in natural titanium, blue anodized titanium or carbon fiber with titanium end caps
  • Titanium slip-on mufflers include a stainless steel midpipe; carbon fiber slip-on mufflers include a titanium midpipe
  • The lightest mufflers and full systems available
  • Superior power and performance - horsepower improved throughout the rpm range
  • Features exclusive proprietary Chamber Core and PowerBomb technology
  • Factory forward engineering centralizes mass, improves handling
  • Made from premium quality American materials
  • Customize with performance tuning inserts and spark arrestor module
CATEGORY4-Stroke
END CAP STYLEEuro
MODELFactory 4.1
SHAPEOval
TYPEExhaust


DescriptionStockPrice 
MUFFLER 4.1 STAINLESS STEEL LTR450 - 043114 / 1831-0211MUFFLER 4.1 STAINLESS STEEL LTR450
Manufacturer Part #: 043114
Catalog #: 1831-0211
Product Specs
Compatible: 2006-2008 Suzuki LT-R450 Quad Racer, 2008 Suzuki LT-R450Z Quad Racer Special Edition		In Stock - Usually Ships in 1-3 Business Days$337.96
EXHAUST 4.1 LTR450 - 043118 / 1830-0152EXHAUST 4.1 LTR450
Manufacturer Part #: 043118
Catalog #: 1830-0152
Product Specs
Compatible: 2006-2009 Suzuki LT-R450 Quad Racer, 2009 Suzuki LT-R450Z Quad Racer Limited Edition, 2008 Suzuki LT-R450Z Quad Racer Special Edition		In Stock - Usually Ships in 1-3 Business Days$506.96
EXHAUST 4.1 TRX450 06-07 - 041266 / 1830-0206EXHAUST 4.1 TRX450 06-07
Manufacturer Part #: 041266
Catalog #: 1830-0206
Product Specs
Compatible: 2006-2009 Honda TRX450ER, 2006-2009 Honda TRX450R		In Stock - Usually Ships in 1-3 Business Days$506.96
EXHAUST 4.1 PBMB YFZ450 - 044208 / 1830-0210EXHAUST 4.1 PBMB YFZ450
Manufacturer Part #: 044208
Catalog #: 1830-0210
Product Specs Compatible Models 		In Stock - Usually Ships in 1-3 Business Days$506.96
EXHAUST 4.1 PBMB RAP700 - 044213 / 1830-0212EXHAUST 4.1 PBMB RAP700
Manufacturer Part #: 044213
Catalog #: 1830-0212
Product Specs Compatible Models 		In Stock - Usually Ships in 1-3 Business Days$574.56
EXHAUST 4.1W/PBMB KFX450 - 042152 / 1830-0246EXHAUST 4.1W/PBMB KFX450
Manufacturer Part #: 042152
Catalog #: 1830-0246
Product Specs
Compatible: 2008-2009 Kawasaki KSF450B KFX450R, 2009 Kawasaki KSF450B-B KFX450R Monster Energy		Temporarily Out of Stock$506.96Back In Stock Notice
EXHAUST 4.1PBMB KTM525 - 045223 / 1830-0265EXHAUST 4.1PBMB KTM525
Manufacturer Part #: 045223
Catalog #: 1830-0265
Product Specs
Compatible: 2008 KTM 450 XC, 2008 KTM 525 XC		Temporarily Out of Stock$675.96Back In Stock Notice
EXHAUST 4.1 TRX700 - 041323 / 1830-0281EXHAUST 4.1 TRX700
Manufacturer Part #: 041323
Catalog #: 1830-0281
Product Specs
Compatible: 2008-2009 Honda TRX700XX		In Stock - Usually Ships in 1-3 Business Days$574.56
EXHAUST 4.1 W/PBOMB DS450 - 045237 / 1830-0287EXHAUST 4.1 W/PBOMB DS450
Manufacturer Part #: 045237
Catalog #: 1830-0287
Product Specs
Compatible: 2008-2009 Can-Am DS 450, 2008 Can-Am DS 450 X, 2009 Can-Am DS 450 X MX, 2009 Can-Am DS 450 X XC		In Stock - Usually Ships in 1-3 Business Days$506.96
EXHAUST 4.1 W/PBMB YFZ450 - 044305 / 1830-0341EXHAUST 4.1 W/PBMB YFZ450
Manufacturer Part #: 044305
Catalog #: 1830-0341
Product Specs		In Stock - Usually Ships in 1-3 Business Days$506.96
EXHAUST 4.1 W/PBMB OUTLAW - 045275 / 1830-0343EXHAUST 4.1 W/PBMB OUTLAW
Manufacturer Part #: 045275
Catalog #: 1830-0343
Product Specs		Temporarily Out of Stock$633.71Back In Stock Notice
EXHAUST 4.1 W/PBOMB KTM - 045284 / 1830-0353EXHAUST 4.1 W/PBOMB KTM
Manufacturer Part #: 045284
Catalog #: 1830-0353
Product Specs		In Stock - Usually Ships in 1-3 Business Days$675.96
MUFFLER S/S 4.1 TRX450 - 041264 / 1831-0336MUFFLER S/S 4.1 TRX450
Manufacturer Part #: 041264
Catalog #: 1831-0336
Product Specs
Compatible: 2006-2009 Honda TRX450ER, 2006-2009 Honda TRX450R		In Stock - Usually Ships in 1-3 Business Days$337.96
MUFFLER SS4.1 LTZ/KXF400 - 043128 / 1831-0345MUFFLER SS4.1 LTZ/KXF400
Manufacturer Part #: 043128
Catalog #: 1831-0345
Product Specs Compatible Models 		In Stock - Usually Ships in 1-3 Business Days$337.96
MUFFLER STAINLESS STEEL 4.1 RAP350 - 044203 / 1831-0354MUFFLER STAINLESS STEEL 4.1 RAP350
Manufacturer Part #: 044203
Catalog #: 1831-0354
Product Specs
Compatible: 2004-2006 Yamaha YFM350 Raptor, 2005-2009 Yamaha YFM350R Raptor, 2005-2007 Yamaha YFM350RSE Raptor Special Edition, 2007 Yamaha YFM350RSE2 Raptor Special Edition 2		Temporarily Out of Stock$337.96Back In Stock Notice
MUFFLER STAINLESS STEEL 4.1 YFZ450 - 044206 / 1831-0356MUFFLER STAINLESS STEEL 4.1 YFZ450
Manufacturer Part #: 044206
Catalog #: 1831-0356
Product Specs Compatible Models 		In Stock - Usually Ships in 1-3 Business Days$337.96
MUFFLER STAINLESS STEEL 4.1 RAP700 - 044211 / 1831-0359MUFFLER STAINLESS STEEL 4.1 RAP700
Manufacturer Part #: 044211
Catalog #: 1831-0359
Product Specs Compatible Models 		In Stock - Usually Ships in 1-3 Business Days$337.96
MUFFLER STAINLESS STEEL 4.1 PRED500 - 045128 / 1831-0367MUFFLER STAINLESS STEEL 4.1 PRED500
Manufacturer Part #: 045128
Catalog #: 1831-0367
Product Specs Compatible Models 		In Stock - Usually Ships in 1-3 Business Days$337.96
MUFFLER STN4.1 KFX450 - 042150 / 1831-0384MUFFLER STN4.1 KFX450
Manufacturer Part #: 042150
Catalog #: 1831-0384
Product Specs
Compatible: 2008-2009 Kawasaki KSF450B KFX450R		In Stock - Usually Ships in 1-3 Business Days$337.96
MUFFLER 4.1STN OUTLAW - 045177 / 1831-0392MUFFLER 4.1STN OUTLAW
Manufacturer Part #: 045177
Catalog #: 1831-0392
Product Specs
Compatible: 2008 Polaris Outlaw 525 IRS		In Stock - Usually Ships in 1-3 Business Days$380.21
MUFFLER 4.1S/S POL450/525 - 045191 / 1831-0409MUFFLER 4.1S/S POL450/525
Manufacturer Part #: 045191
Catalog #: 1831-0409
Product Specs
Compatible: 2008-2009 Polaris Outlaw 450 MXR, 2008-2009 Polaris Outlaw 525 S, 2008 Polaris Outlaw 525 S LE		In Stock - Usually Ships in 1-3 Business Days$380.21
MUFFLER 4.1 KTM525XC - 045221 / 1831-0413MUFFLER 4.1 KTM525XC
Manufacturer Part #: 045221
Catalog #: 1831-0413
Product Specs
Compatible: 2008 KTM 450 XC, 2008 KTM 525 XC		In Stock - Usually Ships in 1-3 Business Days$337.96
MUFFLER 4.1 TRX700 - 041325 / 1831-0436MUFFLER 4.1 TRX700
Manufacturer Part #: 041325
Catalog #: 1831-0436
Product Specs
Compatible: 2008-2009 Honda TRX700XX		In Stock - Usually Ships in 1-3 Business Days$337.96
MUFFLER 4.1 S/S DS450 EFI - 045235 / 1831-0447MUFFLER 4.1 S/S DS450 EFI
Manufacturer Part #: 045235
Catalog #: 1831-0447
Product Specs
Compatible: 2008-2009 Can-Am DS 450, 2008 Can-Am DS 450 X, 2009 Can-Am DS 450 X MX, 2009 Can-Am DS 450 X XC		In Stock - Usually Ships in 1-3 Business Days$337.96
MUFFLER STN 4.1 LTZ400 - 043212 / 1831-0480MUFFLER STN 4.1 LTZ400
Manufacturer Part #: 043212
Catalog #: 1831-0480
Product Specs
Compatible: 2009 Suzuki LT-Z400 Quad Sport Z, 2009 Suzuki LT-Z400Z Quad Sport Z Limited Edition		Temporarily Out of Stock$337.96Back In Stock Notice
MUFFLER 4.1 YFZ450 - 044303 / 1831-0519MUFFLER 4.1 YFZ450
Manufacturer Part #: 044303
Catalog #: 1831-0519
Product Specs		In Stock - Usually Ships in 1-3 Business Days$337.96
MUFFLER 4.1S/S OUTLAW 450 - 045273 / 1831-0528MUFFLER 4.1S/S OUTLAW 450
Manufacturer Part #: 045273
Catalog #: 1831-0528
Product Specs		Temporarily Out of Stock$380.21Back In Stock Notice

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