Select Your Ride

1
2
3

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 - Anodized Titanium 044445

    FMF Factory 4.1 RCT Muffler - Anodized Titanium 044445

    FMF

    $849.99
    If you're serious about extracting maximum performance from your machine while reducing unsprung weight, the FMF Factory 4.1 RCT delivers measurable gains across the entire RPM band without compromise. Built from aerospace-grade titanium and engineered...
    18211840
    SKU:
    18211840
    Availability:
    Ships Same Business Day
    Weight:
    8.35 LBS
    PIPE MATERIAL:
    TITANIUM
    UNITS:
    EACH
    MODEL:
    FACTORY 4.1 RCT
    MUFFLER COLOR/FINISH:
    ANODIZED BLUE
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    END CAP MATERIAL:
    CARBON FIBER
    MUFFLER MATERIAL:
    TITANIUM
    PRODUCT NAME:
    MUFFLER
    $849.99
    Qty in Cart: 0
    Quantity:
    Price:
    $849.99
    Subtotal:
  • FMF PowerCore 4 HEX Muffler 045589

    FMF PowerCore 4 HEX Muffler 045589

    FMF

    $399.99
    The FMF PowerCore 4 HEX delivers measurable gains in power and torque by optimizing exhaust flow through advanced internal geometry and durable construction. If you're serious about performance, this muffler replaces restrictive OEM units with a tuned...
    18211716
    SKU:
    18211716
    Availability:
    Ships Same Business Day
    Weight:
    6.67 LBS
    END CAP MATERIAL:
    STAINLESS STEEL
    MUFFLER MATERIAL:
    ALUMINUM
    MODEL:
    POWERCORE 4 HEX
    PIPE MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    MUFFLER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    UNITS:
    EACH
    MUFFLER COLOR/FINISH:
    RAW
    $399.99
    Qty in Cart: 0
    Quantity:
    Price:
    $399.99
    Subtotal:
  • FMF Q4 HEX Muffler 045590

    FMF Q4 HEX Muffler 045590

    FMF

    $449.99
    The FMF Q4 HEX Muffler delivers measurable power gains across your entire RPM range while significantly reducing system weight—letting you feel the performance improvement without unnecessary noise. Its advanced multi-chamber design with proprietary...
    18211717
    SKU:
    18211717
    Availability:
    Ships Same Business Day
    Weight:
    6.71 LBS
    PRODUCT NAME:
    MUFFLER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    UNITS:
    EACH
    WEIGHT IMPERIAL:
    5.1 LB
    MODEL:
    Q4 HEX
    MUFFLER COLOR/FINISH:
    RAW
    MUFFLER MATERIAL:
    ALUMINUM
    PIPE MATERIAL:
    STAINLESS STEEL
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    END CAP MATERIAL:
    STAINLESS STEEL
    $449.99
    Qty in Cart: 0
    Quantity:
    Price:
    $449.99
    Subtotal:
  • FMF Factory 4.1 RCT Muffler - Aluminum 045594

    FMF Factory 4.1 RCT Muffler - Aluminum 045594

    FMF

    $549.99
    If you're serious about performance, exhaust system design directly impacts your power output across the entire RPM band. The FMF Factory 4.1 RCT eliminates the compromises of heavier, longer mufflers by combining advanced acoustic engineering with...
    18211719
    SKU:
    18211719
    Availability:
    Ships Same Business Day
    Weight:
    6.05 LBS
    PRODUCT NAME:
    MUFFLER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    MUFFLER COLOR/FINISH:
    RAW
    MUFFLER MATERIAL:
    ALUMINUM
    END CAP MATERIAL:
    CARBON FIBER
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    UNITS:
    EACH
    MODEL:
    FACTORY 4.1 RCT
    $549.99
    Qty in Cart: 0
    Quantity:
    Price:
    $549.99
    Subtotal:
  • FMF Factory 4.1 RCT Muffler - Anodized Titanium 042286

    FMF Factory 4.1 RCT Muffler - Anodized Titanium 042286

    FMF

    $749.99
    If you're serious about maximizing your engine's output while minimizing weight, the FMF Factory 4.1 RCT Muffler delivers measurable performance gains across the entire RPM range without the bulk of traditional exhausts. Its compact design centralizes...
    18211337
    SKU:
    18211337
    Availability:
    Ships Same Business Day
    Weight:
    8.20 LBS
    PIPE MATERIAL:
    TITANIUM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    END CAP MATERIAL:
    CARBON FIBER
    MODEL:
    FACTORY 4.1 RCT
    MUFFLER COLOR/FINISH:
    ANODIZED BLUE
    MUFFLER MATERIAL:
    TITANIUM
    PRODUCT NAME:
    MUFFLER
    TYPE:
    SLIP-ON
    $749.99
    Qty in Cart: 0
    Quantity:
    Price:
    $749.99
    Subtotal:
  • FMF Factory 4.1 RCT Muffler - Anodized Titanium 045586

    FMF Factory 4.1 RCT Muffler - Anodized Titanium 045586

    FMF

    $649.99
    If you're serious about extracting maximum power from your machine while cutting unnecessary weight, the FMF Factory 4.1 RCT Muffler delivers real gains across the entire RPM band. Built from aerospace-grade titanium and engineered in Southern...
    18211698
    SKU:
    18211698
    Availability:
    Ships Same Business Day
    Weight:
    7.05 LBS
    END CAP MATERIAL:
    CARBON FIBER
    MUFFLER MATERIAL:
    TITANIUM
    PRODUCT NAME:
    MUFFLER
    UNITS:
    EACH
    MODEL:
    FACTORY 4.1 RCT
    MUFFLER COLOR/FINISH:
    ANODIZED BLUE
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    $649.99
    Qty in Cart: 0
    Quantity:
    Price:
    $649.99
    Subtotal:
  • FMF PowerCore 4 HEX Muffler 042327

    FMF PowerCore 4 HEX Muffler 042327

    FMF

    $399.99
    If you're running a high-revving engine and losing performance to exhaust backpressure, the FMF PowerCore 4 HEX Muffler delivers the flow efficiency you need without sacrificing reliability. This muffler combines proven Hi-Flo core technology with...
    18211723
    SKU:
    18211723
    Availability:
    Ships Same Business Day
    Weight:
    7.00 LBS
    MUFFLER COLOR/FINISH:
    RAW
    MUFFLER MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    MUFFLER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    UNITS:
    EACH
    PIPE MATERIAL:
    STAINLESS STEEL
    END CAP MATERIAL:
    STAINLESS STEEL
    MODEL:
    POWERCORE 4 HEX
    $399.99
    Qty in Cart: 0
    Quantity:
    Price:
    $399.99
    Subtotal:
  • FMF PowerCore 4 HEX Muffler 042308

    FMF PowerCore 4 HEX Muffler 042308

    FMF

    $399.99
    If you're looking to unlock measurable gains in power and torque while maintaining reliability in demanding conditions, the FMF PowerCore 4 HEX Muffler delivers the flow efficiency that separates performance exhausts from the rest. This isn't about noise...
    18211520
    SKU:
    18211520
    Availability:
    Ships Same Business Day
    Weight:
    6.75 LBS
    END CAP MATERIAL:
    STAINLESS STEEL
    MUFFLER COLOR/FINISH:
    RAW
    MUFFLER MATERIAL:
    ALUMINUM
    MODEL:
    POWERCORE 4 HEX
    PIPE MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    MUFFLER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    UNITS:
    EACH
    $399.99
    Qty in Cart: 0
    Quantity:
    Price:
    $399.99
    Subtotal:
  • FMF PowerCore 4 HEX Muffler 042310

    FMF PowerCore 4 HEX Muffler 042310

    FMF

    $399.99
    If you're looking to unlock real power gains without sacrificing durability or adding excessive weight, the FMF PowerCore 4 HEX Muffler delivers measurable increases in horsepower and torque through optimized exhaust flow. Built with premium stainless...
    18211522
    SKU:
    18211522
    Availability:
    Ships Same Business Day
    Weight:
    6.63 LBS
    END CAP MATERIAL:
    STAINLESS STEEL
    MODEL:
    POWERCORE 4 HEX
    PIPE MATERIAL:
    STAINLESS STEEL
    MUFFLER COLOR/FINISH:
    RAW
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    MUFFLER MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    MUFFLER
    UNITS:
    EACH
    $399.99
    Qty in Cart: 0
    Quantity:
    Price:
    $399.99
    Subtotal:
  • FMF Factory 4.1 RCT Muffler - Anodized Titanium 042259

    FMF Factory 4.1 RCT Muffler - Anodized Titanium 042259

    FMF

    $749.99
    If you're serious about extracting maximum power from your machine while reducing unsprung weight, the FMF Factory 4.1 RCT muffler delivers measurable gains across the entire RPM band—without compromise. The aerospace-grade titanium construction and...
    18211222
    SKU:
    18211222
    Availability:
    Ships Same Business Day
    Weight:
    7.89 LBS
    PRODUCT NAME:
    MUFFLER
    TYPE:
    SLIP-ON
    END CAP MATERIAL:
    CARBON FIBER
    MUFFLER MATERIAL:
    TITANIUM
    UNITS:
    EACH
    MODEL:
    FACTORY 4.1 RCT
    MUFFLER COLOR/FINISH:
    ANODIZED BLUE
    PIPE MATERIAL:
    TITANIUM
    RIDING STYLE:
    OFF-ROAD
    $749.99
    Qty in Cart: 0
    Quantity:
    Price:
    $749.99
    Subtotal:
  • FMF PowerCore 4 HEX Muffler 044404

    FMF PowerCore 4 HEX Muffler 044404

    FMF

    $399.99
    The FMF PowerCore 4 HEX Muffler delivers measurable gains in power and torque while maintaining the durability required for serious riding conditions. Its Hi-Flo internal core geometry maximizes exhaust scavenging, translating directly to improved engine...
    18211534
    SKU:
    18211534
    Availability:
    Ships Same Business Day
    Weight:
    7.70 LBS
    MODEL:
    POWERCORE 4 HEX
    PIPE MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    MUFFLER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    MUFFLER COLOR/FINISH:
    RAW
    MUFFLER MATERIAL:
    ALUMINUM
    UNITS:
    EACH
    END CAP MATERIAL:
    STAINLESS STEEL
    $399.99
    Qty in Cart: 0
    Quantity:
    Price:
    $399.99
    Subtotal:
  • FMF Q4 HEX Muffler 044398

    FMF Q4 HEX Muffler 044398

    FMF

    $449.99
    The FMF Q4 HEX Muffler delivers measurable power gains across the entire RPM range while significantly reducing weight compared to stock setups—giving you real performance without the excessive noise penalty. Its advanced multi-stage chambering and...
    18211544
    SKU:
    18211544
    Availability:
    Ships Same Business Day
    Weight:
    7.33 LBS
    MODEL:
    Q4 HEX
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    END CAP MATERIAL:
    STAINLESS STEEL
    UNITS:
    EACH
    MUFFLER COLOR/FINISH:
    RAW
    PIPE MATERIAL:
    STAINLESS STEEL
    TYPE:
    SLIP-ON
    MUFFLER MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    MUFFLER
    WEIGHT IMPERIAL:
    6 LB
    Qty in Cart: 0
    Quantity:
    Price:
    $449.99
    Subtotal:
  • FMF PowerCore 4 HEX Muffler 041514

    FMF PowerCore 4 HEX Muffler 041514

    FMF

    $399.99
    If you're running a high-performance machine, your exhaust system is either working for you or against you. The FMF PowerCore 4 HEX Muffler delivers measurable gains in power and torque while maintaining the durability needed for sustained track use or...
    18211555
    SKU:
    18211555
    Availability:
    Ships Same Business Day
    Weight:
    6.60 LBS
    MODEL:
    POWERCORE 4 HEX
    PIPE MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    MUFFLER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    END CAP MATERIAL:
    STAINLESS STEEL
    MUFFLER MATERIAL:
    ALUMINUM
    MUFFLER COLOR/FINISH:
    RAW
    UNITS:
    EACH
    $399.99
    Qty in Cart: 0
    Quantity:
    Price:
    $399.99
    Subtotal:
  • FMF Factory 4.1 RCT Muffler - Aluminum 041517

    FMF Factory 4.1 RCT Muffler - Aluminum 041517

    FMF

    $599.99
    If you're serious about extracting maximum power from your engine while reducing unsprung weight, the FMF Factory 4.1 RCT Muffler delivers measurable gains across the entire RPM range. The advanced Resonance Chamber Technologyâ„¢ design optimizes exhaust...
    18211563
    SKU:
    18211563
    Availability:
    Ships Same Business Day
    Weight:
    9.05 LBS
    END CAP MATERIAL:
    STAINLESS STEEL
    PIPE MATERIAL:
    STAINLESS STEEL
    MODEL:
    FACTORY 4.1 RCT
    MUFFLER COLOR/FINISH:
    RAW
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    MUFFLER MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    MUFFLER
    UNITS:
    EACH
    $599.99
    Qty in Cart: 0
    Quantity:
    Price:
    $599.99
    Subtotal:
  • FMF PowerCore 4 HEX Muffler 044396

    FMF PowerCore 4 HEX Muffler 044396

    FMF

    $399.99
    If you're running a stock muffler, you're leaving power on the table. The FMF PowerCore 4 HEX delivers measurable increases in horsepower and torque while maintaining reliability through durable construction—making it an essential upgrade for riders...
    18211571
    SKU:
    18211571
    Availability:
    Ships Same Business Day
    Weight:
    6.22 LBS
    END CAP MATERIAL:
    STAINLESS STEEL
    MODEL:
    POWERCORE 4 HEX
    PIPE MATERIAL:
    STAINLESS STEEL
    MUFFLER COLOR/FINISH:
    RAW
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    MUFFLER MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    MUFFLER
    UNITS:
    EACH
    $399.99
    Qty in Cart: 0
    Quantity:
    Price:
    $399.99
    Subtotal:
  • FMF PowerCore 4 HEX Muffler 044397

    FMF PowerCore 4 HEX Muffler 044397

    FMF

    $399.99
    If you're running a high-performance engine, your stock muffler is costing you power and responsiveness. The FMF PowerCore 4 HEX delivers measurable gains in horsepower and torque by optimizing exhaust flow with proven Hi-Flo core technology and advanced...
    18211572
    SKU:
    18211572
    Availability:
    Ships Same Business Day
    Weight:
    6.90 LBS
    MUFFLER COLOR/FINISH:
    RAW
    MUFFLER MATERIAL:
    ALUMINUM
    PIPE MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    MUFFLER
    TYPE:
    SLIP-ON
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    UNITS:
    EACH
    END CAP MATERIAL:
    STAINLESS STEEL
    MODEL:
    POWERCORE 4 HEX
    $399.99
    Qty in Cart: 0
    Quantity:
    Price:
    $399.99
    Subtotal:
  • FMF PowerCore 4 HEX Muffler 045553

    FMF PowerCore 4 HEX Muffler 045553

    FMF

    $399.99
    The FMF PowerCore 4 HEX Muffler delivers measurable gains in horsepower and torque while maintaining the durability and reliability your engine demands. Built with premium stainless steel and aluminum, this muffler combines aggressive flow...
    18211627
    SKU:
    18211627
    Availability:
    Ships Same Business Day
    Weight:
    5.90 LBS
    MODEL:
    POWERCORE 4 HEX
    PIPE MATERIAL:
    STAINLESS STEEL
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    END CAP MATERIAL:
    STAINLESS STEEL
    MUFFLER MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    MUFFLER
    UNITS:
    EACH
    MUFFLER COLOR/FINISH:
    RAW
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    $399.99
    Qty in Cart: 0
    Quantity:
    Price:
    $399.99
    Subtotal:
  • FMF Factory 4.1 RCT Muffler - Anodized Titanium 045561

    FMF Factory 4.1 RCT Muffler - Anodized Titanium 045561

    FMF

    $649.99
    If you're serious about extracting maximum power while keeping weight down, the FMF Factory 4.1 RCT Muffler delivers measurable gains across the entire RPM band without the fragility of longer designs. By centralizing mass closer to the engine through...
    18211631
    SKU:
    18211631
    Availability:
    Ships Same Business Day
    Weight:
    6.00 LBS
    END CAP MATERIAL:
    CARBON FIBER
    MODEL:
    FACTORY 4.1 RCT
    MUFFLER COLOR/FINISH:
    ANODIZED BLUE
    MUFFLER MATERIAL:
    TITANIUM
    PRODUCT NAME:
    MUFFLER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    UNITS:
    EACH
    PIPE MATERIAL:
    TITANIUM
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    $649.99
    Qty in Cart: 0
    Quantity:
    Price:
    $649.99
    Subtotal:
  • FMF Factory 4.1 RCT Muffler - Aluminum 045558

    FMF Factory 4.1 RCT Muffler - Aluminum 045558

    FMF

    $549.99
    If you're serious about extracting maximum performance from your machine while reducing unsprung weight, the FMF Factory 4.1 RCT delivers measurable gains across the entire RPM range without compromise. By centralizing mass closer to the motor and...
    18211633
    SKU:
    18211633
    Availability:
    Ships Same Business Day
    Weight:
    6.12 LBS
    END CAP MATERIAL:
    CARBON FIBER
    MODEL:
    FACTORY 4.1 RCT
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    UNITS:
    EACH
    MUFFLER MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    MUFFLER
    MUFFLER COLOR/FINISH:
    RAW
    PIPE MATERIAL:
    STAINLESS STEEL
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    $549.99
    Qty in Cart: 0
    Quantity:
    Price:
    $549.99
    Subtotal:
  • FMF Powercore 4 Muffler 044448

    FMF Powercore 4 Muffler 044448

    FMF

    $399.99
    The FMF Powercore 4 Muffler delivers measurable power gains across the entire RPM range without compromising rideability or durability. Whether you're pushing hard on the track or tackling varied terrain, this muffler balances increased horsepower and...
    18211028
    SKU:
    18211028
    Availability:
    Ships Same Business Day
    Weight:
    5.30 LBS
    PRODUCT NAME:
    MUFFLER
    TYPE:
    SLIP-ON
    END CAP MATERIAL:
    STAINLESS STEEL
    MODEL:
    POWERCORE 4
    STYLE:
    OVAL
    BASE COLOR:
    SILVER
    END CAP STYLE:
    CONICAL
    MUFFLER MATERIAL:
    ALUMINUM
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    UNITS:
    EACH
    $399.99
    Qty in Cart: 0
    Quantity:
    Price:
    $399.99
    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

SECURE & SAFE PAYMENT

EASY RETURNS

FAST DELIVERY

AUTHORIZED DEALER