FMF has their full lineup of exhausts and slip-on systems available for the 2010 Yamaha YZ250F, and you can check them out below, or for the whole brochure, you can download it here.

FACTORY 4.1
SLIP ON - FROM $424.99 SYSTEM - FROM $624.99
• Premier MX racing exhaust
• Race tested for proven reliability and performance
• Includes Park Legal 96dB and AMA Pro Race legal
94dB insert
• Lightest full system available
• Available in carbon, titanium natural or blue anodized finish
• Utilizes the new RCT - Resonance Chamber Technology
• 4.1 slip on uses FMF or stock header
• Easily serviced for repacking

POWERCORE 4
SLIP ON - $299.99
• Used of MX and Offroad riding
• Value priced slip-on exhaust
• Aluminum performance muffler with durable
stainless steel components
• Includes park legal 96dB insert and spark arrestor
• AMA pro race legal 94dB insert available for purchase
• Easily serviced for repacking
• Use with FMF or stock header

Q4 / Ti Q4 PATENT #7552797
SLIP ON Q4 - $359.99 SLIP ON Ti Q4 - $399.99
• Used for Park and Off-Road Racing
• Max Sound Output 96dB most models well below 93dB
• Developed over years of Championship off-road racing
• In Most cases, the only exhaust accepted by the USFS
U.S. Forest Service
• Removable spark arrestor included
• Official exhaust of soundoffmc.com
• Use with FMF or stock header

MEGABOMB PATENT #7510050
TITANIUM - $349.99
• Increases output from stock motor as much as 15%
• Produces long header torque and short header over-rev
• Reduces sound output as much as 1.5dB
• Made from premium American
TiMetal® material
• Patented design

POWERBOMB PATENT #7510050
TITANIUM - $299.99 STAINLESS - $199.99
• Up to 10% horsepower gain
• Patented technology
• Pre-muffler lowers sound output as much as 1.5dB
• The most copied header in the world

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