MBRP AT-6404SP Sport Slip-On Exhaust w/ Chambered Muffler for 98-01 Yamaha YFM60

Vehicle Fitment

• 1998-2001 Yamaha YFM600FW Grizzly 4x4 ATV
• 2001 Yamaha YFM600FWAH Grizzly 4x4 Hunter Edition

Features

• Sport Series slip-on exhaust system designed for ATV performance
• Chambered sport muffler delivers a moderate, deeper exhaust tone
• Improves exhaust flow over factory muffler while maintaining ride-friendly sound
• Black-coated aluminized steel construction for corrosion resistance
• Straight core design for balanced performance and exhaust efficiency
• Direct bolt-on installation - no cutting or welding required
• Includes USFS-approved spark arrestor for trail compliance
• 1-year manufacturer warranty for peace of mind

Specifications

• Part Number: MBRP AT-6404SP
• Series: Sport Series
• Type: Slip-On Exhaust with Sport Muffler
• Material: Black-coated aluminized steel
• Sound Profile: Moderate sport tone
• Installation: Bolt-on, no cutting/welding
• Fuel Type: Gasoline ATV applications
• Warranty: 1-year manufacturer warranty

Included Components

• 1x Sport Series slip-on exhaust muffler assembly
• 1x Exhaust slip-on inlet pipe
• 1x Exhaust clamp
• 1x USFS-approved spark arrestor
• Installation hardware kit

Product Description

The MBRP AT-6404SP Sport Slip-On Exhaust System is engineered specifically for the 1998-2001 Yamaha YFM600FW Grizzly 4x4 and the 2001 YFM600FWAH Grizzly Hunter Edition. This Sport Series exhaust combines a chambered muffler design with a straight core to deliver a more engaging sound and improved exhaust flow compared to the factory system. The black-coated aluminized steel construction offers durability and corrosion resistance, making it well-suited for trail riding and recreational use.

Installation is straightforward with a direct bolt-on design that does not require cutting or welding, and the included spark arrestor is USFS approved for trail compliance. The moderate sport tone enhances the riding experience without being overly loud, providing a balanced performance upgrade for your Yamaha Grizzly ATV. Backed by a 1-year manufacturer warranty, the AT-6404SP is an excellent choice for riders seeking better sound and flow from their exhaust system.