Skip to content
  • 💰 Save big on your entire purchase with 20-40% off! 💰
  • 💰 Save big on your entire purchase with 20-40% off! 💰
Motorcycle Equipment StoreMotorcycle Equipment Store
  • Helmets
    • Helmet Accessories
    • Full Face
    • Modular
    • Dirt
    • Dual Sport
    • Half Helmets
    • Open Face & 3/4
  • Motorcycle Parts
    • Handlebars & Controls
    • Exhaust
    • Brakes
    • Engine
    • Audio & Speakers
    • Air & Fuel
    • Drive & Transmission
    • Batteries & Electrical
    • Lighting
    • Foot Controls
    • Filters
    • Gas & Oil Tanks
    • Bike Protection
    • Dash & Gauges
    • Body, Fairing & Fender
  • Riding Gear
    • Boots
    • Pants
    • Jackets & Vests
    • Heated Gear
    • Casual Clothing
    • Base & Mid Layers
    • Rain Gear
    • Riding Suits
    • Eyewear
    • Protection
    • Gloves
    • Jerseys
    • Race Suits
  • Motorcycle Accessories
    • Electronics & Mounts
  • Air Intake & Fuel Systems
    • Tools
    • Handlebars & Controls
    • Air Intake & Fuel Systems
    • Engine
    • Brakes
    • Seats
    • Suspension
    • Electrical & Wiring
    • Tires & Tubes
    • Fenders
    • Frame & Chassis
    • Wheels & Wheel Components
    • Drivetrain & Transmission
    • Exhaust
    • Oil Tanks
  • Best Seller
    • No products in the cart.

      Return to shop

  • Cart

    No products in the cart.

    Return to shop

 

FMF Q4 HEX S/A Slip-On Exhaust Yamaha YZ450F / FX / WR450F 2018-2023 Stainless Steel/Aluminum/Stainless Steel [Blemished – Very Good]

Home / Motorcycle Parts / Exhaust
Sale!
FMF Q4 HEX S/A Slip-On Exhaust Yamaha YZ450F / FX / WR450F 2018-2023 Stainless Steel/Aluminum/Stainless Steel [Blemished - Very Good]
FMF Q4 HEX S/A Slip-On Exhaust Yamaha YZ450F / FX / WR450F 2018-2023 Stainless Steel/Aluminum/Stainless Steel [Blemished - Very Good] - Image 2
FMF Q4 HEX S/A Slip-On Exhaust Yamaha YZ450F / FX / WR450F 2018-2023 Stainless Steel/Aluminum/Stainless Steel [Blemished - Very Good] - Image 3
FMF Q4 HEX S/A Slip-On Exhaust Yamaha YZ450F / FX / WR450F 2018-2023 Stainless Steel/Aluminum/Stainless Steel [Blemished - Very Good] -Motorcycle Equipment Store fmfq4 hexsa slip on exhaust yamaha yz450 ffxwr450 f20182023 stainless steel aluminum stainless steel blemished very good stainless steel aluminum stainless steel 1
FMF Q4 HEX S/A Slip-On Exhaust Yamaha YZ450F / FX / WR450F 2018-2023 Stainless Steel/Aluminum/Stainless Steel [Blemished - Very Good] -Motorcycle Equipment Store fmfq4 hexsa slip on exhaust yamaha yz450 ffxwr450 f20182023 stainless steel aluminum stainless steel blemished very good stainless steel aluminum stainless steel 2

$314.99 Original price was: $314.99.$97.99Current price is: $97.99.

SKU: P1041654 Categories: Exhaust, Motorcycle Parts
  • Buy with Confidence, Get Quality
  • No-Questions-Asked Returns
  • Safe Payments, the Smart Choice
  • Efficiency meets excellence in customer care.
Browse
  • Air Intake & Fuel Systems
    • Air Intake & Fuel Systems
    • Brakes
    • Drivetrain & Transmission
    • Electrical & Wiring
    • Engine
    • Exhaust
    • Fenders
    • Frame & Chassis
    • Gas tanks
    • Gauges & Instruments
    • Handlebars & Controls
    • License Plates
    • Manuals
    • Oil Tanks
    • Seats
    • Sissy Bars
    • Suspension
    • Tires & Tubes
    • Tools
    • Wheels & Wheel Components
  • Helmets
    • Dirt
    • Dual Sport
    • Full Face
    • Half Helmets
    • Helmet Accessories
    • Modular
    • Open Face & 3/4
  • Motorcycle Accessories
    • Electronics & Mounts
  • Motorcycle Parts
    • Air & Fuel
    • Audio & Speakers
    • Batteries & Electrical
    • Bike Protection
    • Body, Fairing & Fender
    • Brakes
    • Dash & Gauges
    • Drive & Transmission
    • Engine
    • Exhaust
    • Filters
    • Foot Controls
    • Gas & Oil Tanks
    • Handlebars & Controls
    • Lighting
  • Riding Gear
    • Base & Mid Layers
    • Boots
    • Casual Clothing
    • Eyewear
    • Gloves
    • Heated Gear
    • Jackets & Vests
    • Jerseys
    • Pants
    • Protection
    • Race Suits
    • Rain Gear
    • Riding Suits
  • Description
  • Reviews (0)

Item Condition: This is a new item that has light cosmetic damage which may include, but is not limited to scuffs, scratches, stains, chips or dings. The damage affects the aesthetics but not the function of the item. The original packaging may or may not be present. Indent at the end of exhaust pipe.

FMF Q4 HEX S/A Slip-On Exhaust Yamaha YZ450F / FX / WR450F

Loud pipes might save lives on the street but in the dirt sound is the number one killer of riding trails and regulated track hours. If you have been searching for a performance enhancing muffler that does not wake the dead, then the FMF Q4 HEX is the muffler for you. FMF approached the design process of the Q4 HEX with the goal of achieving more power, while keeping noise levels to a minimum. After countless hours of testing, FMF proved you don’t have to settle for a plugged up, horsepower-robbing moto muffler to remain sound compliant.

Features:

  • Less sound equals more ground (helps keep our riding areas open)
  • Meets USFS and FIM World Enduro sound regulations
  • Power gains throughout the entire RPM range
  • Spark arrestor included
  • Pounds lighter than stock
  • Rugged design for off-road endurance
  • Only US manufacturer to offer dedicated quiet exhaust systems
  • Can be used with stock or FMF Header
  • Weight: 6.1 lbs
  • 100% Made in the USA

Made in the USA

Reviews

There are no reviews yet.

Be the first to review “FMF Q4 HEX S/A Slip-On Exhaust Yamaha YZ450F / FX / WR450F 2018-2023 Stainless Steel/Aluminum/Stainless Steel [Blemished – Very Good]” Cancel reply

Related products

Sale!
Hogtunes 425-Watt Ultra 6 Pack Amp And Speaker Kit For Harley Touring 1998-2013
Quick View

Audio & Speakers

Hogtunes 425-Watt Ultra 6 Pack Amp And Speaker Kit For Harley Touring 1998-2013

$342.00 Original price was: $342.00.$95.99Current price is: $95.99.
Sale!
Trask Slip On Mufflers For Indian Scout 2015-2023
Quick View

Exhaust

Trask Slip On Mufflers For Indian Scout 2015-2023

$377.00 Original price was: $377.00.$97.99Current price is: $97.99.
Sale!
BMW Adjustable Footpeg F900R / F900XR 2020-2023
Quick View

Foot Controls

BMW Adjustable Footpeg F900R / F900XR 2020-2023

$150.00 Original price was: $150.00.$95.99Current price is: $95.99.
Sale!
Kaoko Throttle Stabilizer For Barkbusters BMW 2008-2013
Quick View

Handlebars & Controls

Kaoko Throttle Stabilizer For Barkbusters BMW 2008-2013

$139.99 Original price was: $139.99.$99.99Current price is: $99.99.
Sale!
KST Kustoms 1 1/2" Comanche Bagger Handlebars For Indian Challenger 2020-2023
Quick View

Handlebars & Controls

KST Kustoms 1 1/2″ Comanche Bagger Handlebars For Indian Challenger 2020-2023

$385.00 Original price was: $385.00.$99.99Current price is: $99.99.
Sale!
905 Racing Stunt Pegs Kawasaki ZX6R 2009-2011 Black [Open Box]
Quick View

Foot Controls

905 Racing Stunt Pegs Kawasaki ZX6R 2009-2011 Black [Open Box]

$99.97 Original price was: $99.97.$69.98Current price is: $69.98.
Sale!
S&S Cycle 883 To 1200 Conversion Kit For Harley Sportster 1986-2021
Quick View

Engine

S&S Cycle 883 To 1200 Conversion Kit For Harley Sportster 1986-2021

$398.00 Original price was: $398.00.$95.99Current price is: $95.99.
Sale!
Emgo Megaphone 1 3/4" Universal Muffler
Quick View

Exhaust

Emgo Megaphone 1 3/4″ Universal Muffler

$93.56 Original price was: $93.56.$65.49Current price is: $65.49.
MY ACCOUNT
  • My account
  • Wishlist
  • Checkout
  • Cart
ABOUT US
  • About Us
  • Returns & Exchanges
  • Delivery
  • FAQ
  • Contact Us
LEGAL
  • Privacy Policy
  • Shipping & Returns
  • Payment Method
  • Term and Conditions
Signup for Newsletter

Sign up for exclusive offers, original stories, events and more.

    Copyright 2026 © www.motorcycle-active.com
    • Helmets
      • Helmet Accessories
      • Full Face
      • Modular
      • Dirt
      • Dual Sport
      • Half Helmets
      • Open Face & 3/4
    • Motorcycle Parts
      • Handlebars & Controls
      • Exhaust
      • Brakes
      • Engine
      • Audio & Speakers
      • Air & Fuel
      • Drive & Transmission
      • Batteries & Electrical
      • Lighting
      • Foot Controls
      • Filters
      • Gas & Oil Tanks
      • Bike Protection
      • Dash & Gauges
      • Body, Fairing & Fender
    • Riding Gear
      • Boots
      • Pants
      • Jackets & Vests
      • Heated Gear
      • Casual Clothing
      • Base & Mid Layers
      • Rain Gear
      • Riding Suits
      • Eyewear
      • Protection
      • Gloves
      • Jerseys
      • Race Suits
    • Motorcycle Accessories
      • Electronics & Mounts
    • Air Intake & Fuel Systems
      • Tools
      • Handlebars & Controls
      • Air Intake & Fuel Systems
      • Engine
      • Brakes
      • Seats
      • Suspension
      • Electrical & Wiring
      • Tires & Tubes
      • Fenders
      • Frame & Chassis
      • Wheels & Wheel Components
      • Drivetrain & Transmission
      • Exhaust
      • Oil Tanks
    • Best Seller
    • Login

    Login

    Lost your password?

    Register

    Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.