4 Stroke Dirt Bike Exhausts

FMF - Factory 4.1 RCT Slip-On (KTM)

• All new incorporating the latest in Resonance Chamber Technology
• Patented core shape lowers sound level while maintaining maximum power output
• Patented canister shape increases internal volume for more sound abosrbing material
• Patented chamber design to enhance and refine...

FMF - Factory 4.1 RCT Slip-On (Yamaha):

Get the factory look, sound and power without the cost with the FMF Factory 4.1 RCT Slip-on muffler for Yamaha 4-stroke motocross bikes. An all new design that incorporates the latest in resonance chamber technology, the 4.1 RCT slip-on gives an increase...

Pro Circuit - Ti-6 Titanium Exhaust System (Kawasaki)

The Pro Circuit Ti-6 Titanium Exhaust System is designed to improve performance and is constructed of titanium throughout the head pipe, mid pipe, and muffler canister while the end-cap is constructed of carbon fiber. The Ti-5 showed weak points. So with...

FMF - Factory 4.1 RCT Slip-On (Husqvarna):

• All new incorporating the latest in Resonance Chamber Technology
• Patented core shape lowers sound level while maintaining maximum power output
• Patented canister shape increases internal volume for more sound abosrbing material
• Patented chamber design to enhance and refine...

Moose Racing - Pipe Armor:
Protect your pipe from damage with the Moose Racing Pipe Armor. Easily installed in minutes on your 2-stroke or 4-stroke pipe.
Features::
• Privateer priced pipeguard with works protection
• Sturdy armor for your vulnerable and expensive exhaust
• 3mm aluminum is the thickest pipe...

Moose Racing - Pipe Guards
• Moose Racing pipe guards offer the most protection, style and durability on the market.
• Custom molded to fit perfectly every time.
• Carbon fiber, Kevlar, fiberglass and high temp resins yield an exeptional guard. 8 times stronger, two times stiffer yet 1.5 times...

FMF - Megabomb Header Titanium
• FMF's latest power booster!
• Runs well with sound-restricting mufflers
• Effectively Reduces Sound Output by as much as 1.5dB
• Less Susceptible to Damage than a Long Header
• Produces the Low End of a Long Header and the Top End of a...

FMF - Megabomb Header Stainless (Honda)
• FMF's latest power booster!
• Runs well with sound-restricting mufflers
• Effectively Reduces Sound Output by as much as 1.5dB
• Less Susceptible to Damage than a Long Header
• Produces the Low End of a Long Header and the Top End of...

FMF - Powerbomb Header
The redesigned PowerBomb is a four-stroke header that incorporates FMF's patented PowerBomb module at a precise location in the initial stage of the header. By positioning this "Bomb" at a key point in the system, increased performance and flow is achieved through the expansion and contraction...

FMF - Megabomb Header Titanium
• FMF's latest power booster!
• Runs well with sound-restricting mufflers
• Effectively Reduces Sound Output by as much as 1.5dB
• Less Susceptible to Damage than a Long Header
• Produces the Low End of a Long Header and the Top End of a...

FMF - Megabomb Header Stainless (Yamaha)
• FMF's latest power booster!
• Runs well with sound-restricting mufflers
• Effectively Reduces Sound Output by as much as 1.5dB
• Less Susceptible to Damage than a Long Header
• Produces the Low End of a Long Header and the Top End of...

FMF - Megabomb Stainless Header (KTM)
• FMF's latest power booster!
• Runs well with sound-restricting mufflers
• Effectively Reduces Sound Output by as much as 1.5dB
• Less Susceptible to Damage than a Long Header
• Produces the Low End of a Long Header and the Top End of...

FMF - Megabomb Header Titanium
• FMF's latest power booster!
• Runs well with sound-restricting mufflers
• Effectively Reduces Sound Output by as much as 1.5dB
• Less Susceptible to Damage than a Long Header
• Produces the Low End of a Long Header and the Top End of a...

FMF - Powerbomb Header
The redesigned PowerBomb is a four-stroke header that incorporates FMF's patented PowerBomb module at a precise location in the initial stage of the header. By positioning this "Bomb" at a key point in the system, increased performance and flow is achieved through the expansion and contraction...

FMF - Megabomb Header Titanium:
FMF's latest power booster!
Runs well with sound-restricting mufflers
Effectively Reduces Sound Output by as much as 1.5dB
Less Susceptible to Damage than a Long Header
Produces the Low End of a Long Header and the Top End of a Short Header
Improved Bottom to...

FMF - Megabomb Header Stainless (Kawasaki)
• FMF's latest power booster!
• Runs well with sound-restricting mufflers
• Effectively Reduces Sound Output by as much as 1.5dB
• Less Susceptible to Damage than a Long Header
• Produces the Low End of a Long Header and the Top End of...

Pro Circuit - Ti-6 Pro Titanium Exhaust System (Yamaha):
Pro Circuit's Ti-6 Pro Titanium Exhaust System was created for professional racers competing in a series such as AMA Supercross or AMA Motocross to ensure they pass AMA/FIM sound regulations. The Ti-6 Pro Titanium Exhaust System is constructed of titanium throughout...

FMF - Megabomb Header Titanium
• FMF's latest power booster!
• Runs well with sound-restricting mufflers
• Effectively Reduces Sound Output by as much as 1.5dB
• Less Susceptible to Damage than a Long Header
• Produces the Low End of a Long Header and the Top End of a...

FMF - Powerbomb Header
The redesigned PowerBomb is a four-stroke header that incorporates FMF's patented PowerBomb module at a precise location in the initial stage of the header. By positioning this "Bomb" at a key point in the system, increased performance and flow is achieved through the expansion and contraction...

FMF - Megabomb Header Stainless (Suzuki)
• FMF's latest power booster!
• Runs well with sound-restricting mufflers
• Effectively Reduces Sound Output by as much as 1.5dB
• Less Susceptible to Damage than a Long Header
• Produces the Low End of a Long Header and the Top End of...

Pro Circuit- T-6 Stainless Exhaust System (Suzuki):
The Pro Circuit T-6 Stainless Exhaust System is designed to improve performance and is constructed of stainless steel throughout the head pipe, mid pipe, and end-cap for longetivity while the muffler canister is made of aluminum. Pro Circuit wanted to focus on improving...

FMF - Factory 4.1 RCT Complete System (Husqvarna):
The Factory 4.1 RCT incorporates FMF Resonance Chamber Technology™ both internally and externally
Shorter overall length that is less susceptible to crash damage and complementary to FMF's Factory Forward Engineering - moving the muffler closer to the motor to centralize mass
The...

Pro Circuit - Ti-6 Titanium Exhaust System (Suzuki):

The Pro Circuit Ti-6 Titanium Exhaust System is designed to improve performance and is constructed of titanium throughout the head pipe, mid pipe, and muffler canister while the end-cap is constructed of carbon fiber. The Ti-5 showed weak points. So with the Pro...

FMF - Powerbomb Header
The redesigned PowerBomb is a four-stroke header that incorporates FMF's patented PowerBomb module at a precise location in the initial stage of the header. By positioning this "Bomb" at a key point in the system, increased performance and flow is achieved through the expansion and contraction...

FMF - Megabomb Header Titanium
• FMF's latest power booster!
• Runs well with sound-restricting mufflers
• Effectively Reduces Sound Output by as much as 1.5dB
• Less Susceptible to Damage than a Long Header
• Produces the Low End of a Long Header and the Top End of a...

FMF - Titanium Powerbomb Header
The redesigned PowerBomb is a four-stroke header that incorporates FMF's patented PowerBomb module at a precise location in the initial stage of the header. By positioning this "Bomb" at a key point in the system, increased performance and flow is achieved through the expansion and...

FMF - Megabomb Titanium Header (Kawasaki):
The redesigned PowerBomb is a four-stroke header that incorporates FMF's patented PowerBomb module at a precise location in the initial stage of the header. By positioning this "Bomb" at a key point in the system, increased performance and flow is achieved through the expansion...

FMF - Titanium Powerbomb Header
The redesigned PowerBomb is a four-stroke header that incorporates FMF's patented PowerBomb module at a precise location in the initial stage of the header. By positioning this "Bomb" at a key point in the system, increased performance and flow is achieved through the expansion and...