FMF Powercore 4 Slip-On Muffler (Aluminum) 044222 - Yamaha WR450F 2003-2006 / YZ450F 2003-2005

Product Description

Boost your machine's performance across the entire power curve with the FMF Powercore 4 Slip-On Muffler, engineered to deliver noticeable horsepower and torque gains compatible with every riding style.

Constructed from lightweight aluminum with stainless steel Hi-Flo end caps, this slip-on muffler provides the ultimate balance of durability and exhaust efficiency, complete with a removable spark arrestor for trail compliance.

Top Features: FMF Powercore 4

• Developed to increase horsepower and torque throughout the entire power curve for a noticeable, usable power increase.
• Compatible with every style of riding, from off-road trails to adventure touring and dual-sport applications.
• Lightweight aluminum construction paired with stainless steel Hi-Flo end caps delivers an optimal balance of performance and strength.
• Includes a removable spark arrestor for easy maintenance and versatile trail compliance.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: Does this muffler include a spark arrestor?
A: Yes, it comes equipped with a removable spark arrestor for off-road and trail riding.

Q: Is this slip-on compatible with both WR and YZ 450 models?
A: Yes, it is engineered to fit 2003-2006 Yamaha WR450F and 2003-2005 Yamaha YZ450F models.

Expert Pro-Tip

Expert Pro-Tip: Always apply a thin layer of high-temp silicone sealant at the slip-joint connection during installation to prevent exhaust leaks and maintain optimal backpressure.

Recommended Pairings:

• Yamaha 4-Stroke Performance Parts
• MX Chains
• Motorcycle Tools & Accessories

About Moto-House MX

At Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. We pride ourselves on great customer service, and every item ships FAST - straight to your door.

Moto-House MX - Choice of Champions - Your premier powersports source with great customer service and lightning-fast shipping straight to your door.