MBRP AT-6400SP Sport Slip-On Exhaust System for 2001–2005 Yamaha YFM660R Raptor

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, Enhanced Flow.
• Sport Muffler

Improve the sound and exhaust flow of your Yamaha ATV with the MBRP AT-6400SP Sport Series Slip-On Exhaust System. Designed for a straightforward bolt-on installation, this chambered muffler system delivers a deeper, more aggressive exhaust tone under acceleration while maintaining a balanced sound for comfortable trail riding. The Sport muffler provides enhanced flow and a clean appearance without an overly loud or disruptive note.

The MBRP AT-6400SP features a 1.75-inch inlet and a 4.25-inch diameter muffler body engineered for reliable powersports use. Its chambered design supports consistent performance and dependable operation in demanding riding environments. This slip-on system is a practical upgrade for riders seeking improved exhaust character, efficient installation, and the trusted fit and finish of MBRP.

Fitment: Fits 2001–2005 Yamaha YFM660R Raptor models and 2003–2004 Yamaha YFM660RLE Raptor models. This product is not CARB approved; verify local emissions requirements before installation. Professional installation is recommended, and all supplied hardware and instructions should be reviewed before beginning work.

What's Included: One MBRP Sport Series slip-on exhaust system with chambered Sport muffler. The system is supplied as a vehicle-specific exhaust upgrade intended for the listed Yamaha ATV applications.

Features:

• Sport Muffler: Produces a deeper, aggressive exhaust tone under throttle while maintaining a balanced sound for trail riding.
• Chambered Design: Supports enhanced exhaust flow and dependable performance in demanding powersports applications.
• Bolt-On Installation: Slip-on configuration is designed for a straightforward installation using the vehicle's existing exhaust connection points.
• Vehicle-Specific Fitment: Engineered for 2001–2005 Yamaha YFM660R Raptor and 2003–2004 Yamaha YFM660RLE Raptor models.

Fitments:
2001 Yamaha YFM660R Raptor Base
2002 Yamaha YFM660R Raptor Base
2003 Yamaha YFM660R Raptor Base
2004 Yamaha YFM660R Raptor Base
2005 Yamaha YFM660R Raptor 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