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FMF Dirt Bike 4 Stroke Mufflers

FMF Dirt Bike 4 Stroke Mufflers

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • FMF Factory 4.1 RCT Muffler - Aluminum 042290

    FMF Factory 4.1 RCT Muffler - Aluminum 042290

    FMF

    $599.99
    The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technologyâ„¢ both internally and externally, In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering -...
    18211391
    SKU:
    18211391
    Availability:
    Ships Same Business Day
    Weight:
    8.83 LBS
    PIPE MATERIAL:
    STAINLESS STEEL
    END CAP MATERIAL:
    CARBON FIBER
    MUFFLER MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    MUFFLER
    UNITS:
    EACH
    MODEL:
    FACTORY 4.1 RCT
    MUFFLER COLOR/FINISH:
    RAW
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    $599.99
    Qty in Cart: 0
    Quantity:
    Price:
    $599.99
    Subtotal:
  • FMF Factory 4.1 RCT Muffler - Aluminum 042291

    FMF Factory 4.1 RCT Muffler - Aluminum 042291

    FMF

    $599.99
    The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technologyâ„¢ both internally and externally, In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering -...
    18211392
    SKU:
    18211392
    Availability:
    Ships Same Business Day
    Weight:
    8.72 LBS
    PIPE MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    MUFFLER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    MODEL:
    FACTORY 4.1 RCT
    MUFFLER COLOR/FINISH:
    RAW
    MUFFLER MATERIAL:
    ALUMINUM
    END CAP MATERIAL:
    CARBON FIBER
    UNITS:
    EACH
    $599.99
    Qty in Cart: 0
    Quantity:
    Price:
    $599.99
    Subtotal:
  • FMF Factory 4.1 RCT Muffler - Aluminum 042292

    FMF Factory 4.1 RCT Muffler - Aluminum 042292

    FMF

    $599.99
    The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technologyâ„¢ both internally and externally, In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering -...
    18211393
    SKU:
    18211393
    Availability:
    Ships Same Business Day
    Weight:
    8.74 LBS
    PIPE MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    MUFFLER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    MUFFLER COLOR/FINISH:
    RAW
    MUFFLER MATERIAL:
    ALUMINUM
    END CAP MATERIAL:
    CARBON FIBER
    UNITS:
    EACH
    MODEL:
    FACTORY 4.1 RCT
    $599.99
    Qty in Cart: 0
    Quantity:
    Price:
    $599.99
    Subtotal:
  • FMF Q4 Muffler 043380

    FMF Q4 Muffler 043380

    FMF

    $449.99
    FMF Q4 Muffler
    18212045
    SKU:
    18212045
    Availability:
    Ships Same Business Day
    Weight:
    7.15 LBS
    END CAP STYLE:
    SLASH-CUT
    PRODUCT NAME:
    MUFFLER
    MATERIAL:
    ALUMINUM
    MODEL:
    Q4 HEX
    RIDING STYLE:
    OFF-ROAD
    END CAP MATERIAL:
    STAINLESS STEEL
    TYPE:
    SLIP-ON
    UNITS:
    EACH
    $449.99
    Qty in Cart: 0
    Quantity:
    Price:
    $449.99
    Subtotal:
  • FMF Factory 4.1 RCT Muffler - Aluminum 044464

    FMF Factory 4.1 RCT Muffler - Aluminum 044464

    FMF

    $674.99
    The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technologyâ„¢ both internally and externally, In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering -...
    18212012
    SKU:
    18212012
    Availability:
    Ships Same Business Day
    Weight:
    8.40 LBS
    END CAP MATERIAL:
    CARBON FIBER
    MODEL:
    FACTORY 4.1 RCT
    MUFFLER COLOR/FINISH:
    RAW
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    UNITS:
    EACH
    PRODUCT NAME:
    MUFFLER
    MUFFLER MATERIAL:
    ALUMINUM
    PIPE MATERIAL:
    STAINLESS STEEL
    $674.99
    Qty in Cart: 0
    Quantity:
    Price:
    $674.99
    Subtotal:
  • FMF Factory 4.1 RCT Muffler - Anodized Titanium 044466

    FMF Factory 4.1 RCT Muffler - Anodized Titanium 044466

    FMF

    $799.99
    The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technologyâ„¢ both internally and externally, In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering -...
    18212013
    SKU:
    18212013
    Availability:
    Ships Same Business Day
    Weight:
    8.40 LBS
    END CAP MATERIAL:
    CARBON FIBER
    MODEL:
    FACTORY 4.1 RCT
    MUFFLER COLOR/FINISH:
    ANODIZED BLUE
    PIPE MATERIAL:
    TITANIUM
    TYPE:
    SLIP-ON
    UNITS:
    EACH
    MUFFLER MATERIAL:
    TITANIUM
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    MUFFLER
    $799.99
    Qty in Cart: 0
    Quantity:
    Price:
    $799.99
    Subtotal:
  • FMF Factory 4.1 Muffler 042394

    FMF Factory 4.1 Muffler 042394

    FMF

    $599.99
    FMF Factory 4.1 Muffler
    18212035
    SKU:
    18212035
    Availability:
    Ships Same Business Day
    Weight:
    7.68 LBS
    PRODUCT NAME:
    MUFFLER
    END CAP STYLE:
    CONICAL
    TYPE:
    SLIP-ON
    UNITS:
    EACH
    COLOR/FINISH:
    SILVER
    MODEL:
    FACTORY 4.1 RCT
    RIDING STYLE:
    OFF-ROAD
    END CAP COLOR/FINISH:
    BLACK
    END CAP MATERIAL:
    CARBON FIBER
    MATERIAL:
    ALUMINUM
    $599.99
    Qty in Cart: 0
    Quantity:
    Price:
    $599.99
    Subtotal:
  • FMF Factory 4.1 Muffler 042396 FMF Factory 4.1 Muffler 042396

    FMF Factory 4.1 Muffler 042396

    FMF

    $749.99
    FMF Factory 4.1 Muffler
    18212036
    SKU:
    18212036
    Availability:
    Ships Same Business Day
    Weight:
    6.70 LBS
    COLOR/FINISH:
    ANODIZED
    MODEL:
    FACTORY 4.1 RCT
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    END CAP MATERIAL:
    CARBON FIBER
    END CAP STYLE:
    CONICAL
    PRODUCT NAME:
    MUFFLER
    UNITS:
    EACH
    COLOR/FINISH:
    BLUE
    END CAP COLOR/FINISH:
    SILVER
    MATERIAL:
    TITANIUM
    $749.99
    Qty in Cart: 0
    Quantity:
    Price:
    $749.99
    Subtotal:
  • FMF Powercore 4 Muffler 042392 FMF Powercore 4 Muffler 042392

    FMF Powercore 4 Muffler 042392

    FMF

    $399.99
    FMF Powercore 4 Muffler
    18212038
    SKU:
    18212038
    Availability:
    Ships Same Business Day
    Weight:
    6.60 LBS
    MUFFLER MATERIAL:
    ALUMINUM
    UNITS:
    EACH
    PIPE MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    MUFFLER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    END CAP MATERIAL:
    STAINLESS STEEL
    MODEL:
    POWERCORE 4
    $399.99
    Qty in Cart: 0
    Quantity:
    Price:
    $399.99
    Subtotal:
  • FMF Powercore 4 Muffler 041600

    FMF Powercore 4 Muffler 041600

    FMF

    $399.99
    FMF Powercore 4 Muffler
    18212041
    SKU:
    18212041
    Availability:
    Ships Same Business Day
    Weight:
    6.80 LBS
    MUFFLER MATERIAL:
    ALUMINUM
    UNITS:
    EACH
    PIPE MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    MUFFLER
    RIDING STYLE:
    OFF-ROAD
    END CAP MATERIAL:
    STAINLESS STEEL
    MODEL:
    POWERCORE 4
    TYPE:
    SLIP-ON
    $399.99
    Qty in Cart: 0
    Quantity:
    Price:
    $399.99
    Subtotal:
  • FMF Q4 Muffler 041601

    FMF Q4 Muffler 041601

    FMF

    $449.99
    FMF Q4 Muffler
    18212042
    SKU:
    18212042
    Availability:
    Ships Same Business Day
    Weight:
    7.30 LBS
    MODEL:
    Q4 HEX
    TYPE:
    SLIP-ON
    PRODUCT NAME:
    MUFFLER
    RIDING STYLE:
    OFF-ROAD
    MATERIAL:
    ALUMINUM
    UNITS:
    EACH
    END CAP MATERIAL:
    STAINLESS STEEL
    END CAP STYLE:
    SLASH-CUT
    $449.99
    Qty in Cart: 0
    Quantity:
    Price:
    $449.99
    Subtotal:
  • FMF Factory 4.1 Muffler 041602

    FMF Factory 4.1 Muffler 041602

    FMF

    $674.99
    FMF Factory 4.1 Muffler
    18212043
    SKU:
    18212043
    Availability:
    Ships Same Business Day
    Weight:
    7.50 LBS
    END CAP MATERIAL:
    CARBON FIBER
    MODEL:
    FACTORY 4.1
    PRODUCT NAME:
    MUFFLER
    UNITS:
    EACH
    MATERIAL:
    STAINLESS STEEL
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    $674.99
    Qty in Cart: 0
    Quantity:
    Price:
    $674.99
    Subtotal:
  • FMF Powercore 4 with Spark Arrestor 043376

    FMF Powercore 4 with Spark Arrestor 043376

    FMF

    $399.99
    Overall increase in power and torque, Durable stainless steel and aluminum construction, Advanced packing material for maximum longevity, Removable spark arrestor included
    18212016
    SKU:
    18212016
    Availability:
    Ships Same Business Day
    Weight:
    7.10 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    MUFFLER MATERIAL:
    ALUMINUM
    PIPE MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    MUFFLER
    BASE COLOR:
    SILVER
    UNITS:
    EACH
    END CAP MATERIAL:
    STAINLESS STEEL
    MODEL:
    POWERCORE 4
    $399.99
    Qty in Cart: 0
    Quantity:
    Price:
    $399.99
    Subtotal:
  • FMF Q4 Muffler 043377

    FMF Q4 Muffler 043377

    FMF

    $449.99
    Developed over years of championship off-road racing, Employs intricate chambers, baffles and proprietary multistage packing material, Max Sound output 96dB, Constructed from aircraft grade aluminum and high strength stainless steel, Use with FMF or...
    18212017
    SKU:
    18212017
    Availability:
    Ships Same Business Day
    Weight:
    7.00 LBS
    END CAP STYLE:
    CONICAL
    MODEL:
    Q4
    MUFFLER MATERIAL:
    ALUMINUM
    UNITS:
    EACH
    PIPE MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    MUFFLER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    BASE COLOR:
    SILVER
    END CAP MATERIAL:
    STAINLESS STEEL
    MUFFLER COLOR/FINISH:
    RAW
    $449.99
    Qty in Cart: 0
    Quantity:
    Price:
    $449.99
    Subtotal:
  • FMF Factory 4.1 Muffler 041592

    FMF Factory 4.1 Muffler 041592

    FMF

    $299.99
    Factory 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...
    18212018
    SKU:
    18212018
    Availability:
    Ships Same Business Day
    Weight:
    2.66 LBS
    MODEL:
    FACTORY 4.1
    TYPE:
    SLIP-ON
    UNITS:
    EACH
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    OFF-ROAD
    END CAP MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    MUFFLER
    $299.99
    Qty in Cart: 0
    Quantity:
    Price:
    $299.99
    Subtotal:
  • FMF Factory 4.1 Muffler 041593

    FMF Factory 4.1 Muffler 041593

    FMF

    $349.99
    Factory 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...
    18212019
    SKU:
    18212019
    Availability:
    Ships Same Business Day
    Weight:
    2.58 LBS
    END CAP MATERIAL:
    STAINLESS STEEL
    TYPE:
    SLIP-ON
    UNITS:
    EACH
    MATERIAL:
    TITANIUM
    MODEL:
    FACTORY 4.1
    PRODUCT NAME:
    MUFFLER
    RIDING STYLE:
    OFF-ROAD
    $349.99
    Qty in Cart: 0
    Quantity:
    Price:
    $349.99
    Subtotal:
  • FMF Factory 4.1 Muffler 041595

    FMF Factory 4.1 Muffler 041595

    FMF

    $349.99
    Factory 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...
    18212021
    SKU:
    18212021
    Availability:
    Ships Same Business Day
    Weight:
    3.14 LBS
    COLOR/FINISH:
    TITANIUM
    MUFFLER MATERIAL:
    TITANIUM
    PRODUCT NAME:
    MUFFLER
    RIDING STYLE:
    OFF-ROAD
    END CAP MATERIAL:
    STAINLESS STEEL
    COLOR/FINISH:
    ANODIZED
    TYPE:
    SLIP-ON
    MODEL:
    FACTORY 4.1
    UNITS:
    EACH
    $349.99
    Qty in Cart: 0
    Quantity:
    Price:
    $349.99
    Subtotal:
  • FMF Factory 4.1 Muffler 042383

    FMF Factory 4.1 Muffler 042383

    FMF

    $349.99
    Factory 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...
    18212023
    SKU:
    18212023
    Availability:
    Ships Same Business Day
    Weight:
    3.57 LBS
    PRODUCT NAME:
    MUFFLER
    RIDING STYLE:
    OFF-ROAD
    MODEL:
    FACTORY 4.1
    MUFFLER MATERIAL:
    TITANIUM
    UNITS:
    EACH
    END CAP MATERIAL:
    STAINLESS STEEL
    TYPE:
    SLIP-ON
    $349.99
    Qty in Cart: 0
    Quantity:
    Price:
    $349.99
    Subtotal:
  • FMF Powercore 4 Muffler 041596

    FMF Powercore 4 Muffler 041596

    FMF

    $399.99
    Overall increase in power and torque, Durable stainless steel and aluminum construction, Advanced packing material for maximum longevity, Removable spark arrestor included
    18212026
    SKU:
    18212026
    Availability:
    Ships Same Business Day
    Weight:
    6.30 LBS
    BASE COLOR:
    SILVER
    PRODUCT NAME:
    MUFFLER
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    END CAP MATERIAL:
    STAINLESS STEEL
    MODEL:
    POWERCORE 4
    TYPE:
    SLIP-ON
    END CAP STYLE:
    CONICAL
    MUFFLER MATERIAL:
    ALUMINUM
    PIPE MATERIAL:
    STAINLESS STEEL
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    $399.99
    Qty in Cart: 0
    Quantity:
    Price:
    $399.99
    Subtotal:
  • FMF Q4 Muffler 042393

    FMF Q4 Muffler 042393

    FMF

    $449.99
    FMF Q4 Muffler
    18212039
    SKU:
    18212039
    Availability:
    Ships Same Business Day
    Weight:
    25.00 LBS
    END CAP MATERIAL:
    STAINLESS STEEL
    MODEL:
    Q4 HEX
    TYPE:
    SLIP-ON
    PRODUCT NAME:
    MUFFLER
    RIDING STYLE:
    OFF-ROAD
    MATERIAL:
    ALUMINUM
    UNITS:
    EACH
    END CAP STYLE:
    SLASH-CUT
    $449.99
    Qty in Cart: 0
    Quantity:
    Price:
    $449.99
    Subtotal:
  • Total: items /

Adding your products to cart

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

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