Home/All Parts/MBRP/MBRP Sport Muffler. USFS Approved Spark Arrestor Included. — 2004-2009 Yamaha YFZ450 (AT6403SP)

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MBRP muffler.

CLEAN LOOKS AND A PERFORMANCE SOUND - MBRP SPORT SERIES, Quickly bolt on an MBRP Sport Series exhaust and enjoy the new deep tumble coming from your ATV or SXS. Slam the throttle for an aggressive sound, or cruise all day long without worrying about being obnoxious. This exhaust focuses on enjoying the trails and delivering a balanced tone.

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Confirm this fits your vehicle. Use the “Check Fit” selector, or see the Vehicle Compatibility list below for confirmed years, makes and models.

MBRP

MBRP Sport Muffler. USFS Approved Spark Arrestor Included. — 2004-2009 Yamaha YFZ450 (AT6403SP)

Name: MBRP Sport Muffler. USFS Approved Spark Arrestor Included. — 2004-2009 Yamaha YFZ450 (AT6403SP)
Brand: MBRP
SKU: MBRAT-6403SP
Price: 394.99 CAD
Availability: InStock

Part #: MBRAT-6403SP In stock

$394.99

Price in CAD. Taxes & shipping calculated at checkout.

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Arrives within 1 week.Estimate, not a guarantee — if an order will take longer we contact you before taking payment.

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Fits these vehicles

2004–2009 Yamaha YFZ450

Fitment data is provided as a guide — please verify before purchase.

Vehicle fitment

Verified fitment (manufacturer data)

Years	Make	Model
2004–2009	Yamaha	YFZ450

Check fitment before you order. We publish fitment from manufacturer and industry data and take care with it, but fit can depend on trim, cab and bed configuration, factory options and any modifications already on your vehicle. If you are unsure, contact us before ordering — and if fitment we published turns out to be wrong, we cover the return.