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   Shop by Catalog > Western Power Sports ATV Accessories > Exhaust
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  FMF FACTORY 4.1 4-STROKE EXHAUST SYSTEM

 
 
  • Horsepower gain throughout the RPM range
  • Advanced engineering and patent pending design
  • Optional quiet insert (-3db) and spark arrestor
  • Titanium construction with durable stainless steel mid-pipe
  • Available natural or anodized titanium
  • Use with stock or FMF header
  • Easy to repack
 
Application Chart

Quantity Item / Item Code Price
FMF QUIET CORE INSERT S/A 4.1/4.1C
79-0906
$39.95

FMF 4.1 QUIET INSERT 1 3/8 - 5db
79-0907
$29.95

FMF 4.1 SPARK ARRESTOR
79-0909
$29.95

FMF FACTORY 4.1 LT-R450 '06-07 SYS
79-1044
$599.95

FMF FACTORY 4.1 LT-R450 '06-07 ANODIZED SYS
79-1045
$599.95

FMF FAC 4.1 SYS KAW450
79-2048
$599.95

FMF FAC 4.1 SYS ANOD KAW450
79-2049
$599.95

FMF FACT 4.1 TRX450R '04-05 SYS
79-3124
$599.95

FMF FACT 4.1 TRX450R '04-05 ANODIZED SYS
79-3125
$599.95

FMF FACT 4.1 TRX450R '06-07 SYS
79-3128
$599.95

FMF FACT 4.1 TRX450R '06-07 ANODIZED SYS
79-3129
$599.95

FMF FACT 4.1 LTZ/KFX400 '03-07 SYS
79-3142
$599.95

FMF FACT 4.1 LTZ/KFX400 '03-07 ANODIZED SYS
79-3143
$599.95

FMF FACT 4.1 PREDATOR500 03-07 SYS W/HI-FLO HEADER
79-3160
$639.95

FMF FACT 4.1 PREDATOR500 03-07 ANODIZED SYS W/HI-F
79-3161
$639.95

FMF FACT 4.1 POL OUTLAW 525 '07 SYS W/POWERBOMB HE
79-3162
$749.95

FMF FACT 4.1 POL OUTLAW 525 '07 ANODIZED SYS W/PWR
79-3163
$749.95

FMF FACT 4.1 YFZ450 '04-07 SYS
79-3182
$599.95

FMF FACT 4.1 YFZ450 '04-07 ANODIZED SYS
79-3183
$599.95

FMF FACT 4.1 RAPTOR 700 '06-07 SYS
79-3186
$679.95

FMF FACT 4.1 RAPTOR 700 '06-07 ANODIZED SYS
79-3187
$679.95
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