MBRP AT-6406SP Sport Series Slip-On Exhaust System for 2002-2008 Yamaha YFM660F Grizzly

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. ATV Exhaust System With Sport Muffler; Slip-On System; 1.75 in. Inlet; 4.25 in. Diameter Body; Chambered Muffler; Chambered Muffler.

• Reliable and Dependable Chambered Design. Bolt-on Installation. Mild Exhaust Note.
• Sport Muffler

The MBRP AT-6406SP Sport Series slip-on exhaust system delivers a clean appearance and balanced performance sound for select Yamaha YFM660F Grizzly 4x4 ATVs. Designed as a direct bolt-on upgrade, this ATV exhaust system produces a deeper, more aggressive tone under throttle while remaining comfortable for extended trail riding.

Featuring a chambered Sport muffler, the MBRP AT-6406SP is engineered for reliable service and straightforward installation. Its 1.75-inch inlet and 4.25-inch muffler body support a practical fit and performance-focused design without excessive noise. The chambered construction helps provide a mild exhaust note during normal cruising and a stronger sound when the throttle is opened.

Key Product Specifications & Technical Data:

• Brand: MBRP
• Part Number: AT-6406SP
• Product Type: ATV slip-on exhaust system
• Muffler Style: Sport Series chambered muffler
• Inlet Size: 1.75 inches
• Muffler Body Diameter: 4.25 inches
• Installation: Bolt-on replacement system
• Application: Yamaha YFM660F Grizzly 4x4

What's Included: One MBRP Sport Series slip-on exhaust system with chambered Sport muffler. Installation hardware and components are supplied as applicable to the system design.

Fitment: Fits 2002, 2003, 2004, 2005, 2006, 2007, and 2008 Yamaha YFM660F Grizzly 4x4 models. This product is not CARB approved; review applicable emissions regulations before installation. Professional installation is recommended if required by the vehicle or local regulations.

Features:

• Sport Muffler: Provides a deeper, balanced exhaust tone with an aggressive sound under throttle and a mild note during cruising.
• Chambered Design: Supports dependable performance and a practical sound profile for recreational trail use.
• Bolt-On Installation: Designed as a slip-on replacement for straightforward installation on compatible Yamaha Grizzly models.
• Trail-Focused Performance: Enhances exhaust character while maintaining a clean appearance and comfortable riding experience.

Fitments:
2002 Yamaha YFM660F Grizzly 4x4 Base
2003 Yamaha YFM660F Grizzly 4x4 Base
2004 Yamaha YFM660F Grizzly 4x4 Base
2005 Yamaha YFM660F Grizzly 4x4 Base
2006 Yamaha YFM660F Grizzly 4x4 Base
2007 Yamaha YFM660F Grizzly 4x4 Base
2008 Yamaha YFM660F Grizzly 4x4 Base

Air Freight Prohibited: false
Not Carb Approved: false
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: powersports
Epa: N/A
Regular Stock: t
Units Per Sku: 1