4 Stroke Dirt Bike Exhausts

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

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...

Pro Circuit- T-6 Stainless Exhaust System (KTM):
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...

Pro Circuit - Ti-6 Pro Titanium Exhaust System (Husqvarna):
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...

T-6 Stainless Exhaust System (Husqvarna):
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 the power...

FMF - Powercore 4 Hex Slip-On Muffler (Suzuki):
The FMF Powercore 4 Hex Slip-On is designed specifically to provide riders with a race-inspired exhaust muffler at an affordable price! The Powercore 4 Hex gives your Suzuki the torque and horsepower you demand out of an aftermarket FMF exhaust. FMF created...

Powercore 4 Hex Slip-On (Husqvarna):
Let your new Husqvarna scream with a fresh new exhaust from FMF! This Powercore 4 Hex Slip-On is the perfect solution for those looking for a fast, easy, and affordable way to crank out a few more horses from their Husqvarana. This Powercore 4 Hex...

Pro Circuit - T-6 Stainless Slip-On Exhaust (Suzuki):
The T-6 Stainless Slip-On Silencer is designed for a rider looking for an inexpensive, easy-to-install, durable performance silencer that can bolt onto their stock head pipe. This slip-on silencer is constructed of stainless steel throughout the mid pipe and end-cap while the...

Pro Circuit -T-4 Exhaust System (Honda):
Exhaust Description:
The T-4 System is designed to increase performance from bottom to top, making it easier to ride faster. The stainless steel and aluminum construction offer increased strength and durability; ideal for racing and off-road riding. This system is also tunable, meaning you can...

FMF - Powercore 4 Muffler (Yamaha)
• We developed the PowerCore4 to increase the horsepower and torque throughout the entire power curve and give you a noticeable power increase that is very usable and beneficial, no matter what your riding style or ability is.
• Space Age internal packing for...

Pro Circuit -T-4 Exhaust System (Suzuki Mini Bikes):
Exhaust Description:
The T-4 System is designed to increase performance from bottom to top, making it easier to ride faster. The stainless steel and aluminum construction offer increased strength and durability; ideal for racing and off-road riding. This system is also tunable,...

Pro Circuit -T-4 Exhaust System (Kawasaki Mini Bikes):
Exhaust Description:
The T-4 System is designed to increase performance from bottom to top, making it easier to ride faster. The stainless steel and aluminum construction offer increased strength and durability; ideal for racing and off-road riding. This system is also tunable,...

Pro Circuit - T-6 Stainless Exhaust System (Gas Gas):
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...

FMF - Powercore 4 Hex Slip-On Muffler (Gas Gas):
Let your new Husqvarna scream with a fresh new exhaust from FMF! This Powercore 4 Hex Slip-On is the perfect solution for those looking for a fast, easy, and affordable way to crank out a few more horses from their Husqvarana....

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 - Q4 Hex Slip-On Muffler (Husqvarna):
Features: The Q4 employs intricate chambers, baffles and proprietary multistage packing material
With the Q4 you don’t need to hear the power, just feel the power!
Less sound equals more ground
Meets USFS and FIM World Enduro sound regulations
Power gains throughout the...

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...

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

• 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...

FMF - Factory 4.1 RCT Complete System (Gas Gas):
Features: 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 absorbing material
Patented chamber design to enhance and refine exhaust pressure
...

FMF - Factory 4.1 RCT Complete System (KTM):
Features: 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 absorbing material
Patented chamber design to enhance and refine exhaust pressure
Factory...