Offroad Catalog

Features

• Complete systems and slip-on mufflers
• Systems feature titanium PowerBomb header and midpipe, except where noted
• Factory 4.1 muffler available in natural titanium or blue anodized titanium with titanium end caps
• Factory 4.1C muffler constructed from carbon fiber with titanium end caps
• The lightest mufflers and full systems available
• Superior power and performance – horsepower improved throughout the rpm range
• Features exclusive proprietary Chamber Core and PowerBomb technology
• Factory forward engineering centralizes mass, improves handling
• Ti or carbon muffler with titanium end caps, mid-pipe and PowerBomb header
• Made from premium quality American materials
• Customize with performance tuning inserts and spark arrestor module
• Meets AMA sound requirements on most models; inserts available for others
• Incredible horsepower gains with 99 dB sound level
• Titanium construction with American TIMETAL® canister and rear end cap
• Designed with FMF’s exclusive Factory Forward Engineering – lowering the center of gravity and centralizing mass
• Utilizes advanced multistage packing material and a Hi-Flo stainless steel formed front end cap and mid-pipe
• Removable spark arrestor included and optional 96 dB insert available separately
• Offers an increase of power that starts from the low end of the rpm scale and continues on through the mid with a huge increase in top-end rpm power
• Constructed from military-grade titanium – the lightest and strongest metal on the planet
• Substantial power gains over standard systems
• Space-age internal packing for maximum packing life
• The Q series features advanced engineering to precisely locate baffles and chambers to absorb sound
• Less mass to enhance power-to-weight ratio
• Quiet power with minimal sacrifice for performance
• Developed over years of championship off-road racing
• Twin-stage core design for lower sound output and extended life of packing material
• Comes standard with spark arrestor
• Developed over years of championship off-road racing
• Max sound output 96 dB; most models below 94 dB
• American TIMETAL® canister, end caps and mid-pipe
• Comes standard with spark arrestor
• High performance
• Quiet technology
• Weighs 10% less than the original Q
• Consistently meters below 96 dB
• Maintenance-free U.S.F.S.-approved spark arrestor
• Fits stock and PowerBomb header
• Advanced sound-deadening baffles and chambers, an internal spark arrestor and durable packing material
• Computer designed and dyno tested for each 4-stroke application
• Fits stock and PowerBomb header
• New modular end cap allows easy tuning alterations
• Standard Hi-Flo 2” end cap boosts all-around performance; optional smaller 13/4” end cap smooths power delivery; spark arrestor module adds off-road versatility
• Computer designed and dyno tested for every 4-stroke application
• Enhanced sonic evacuation delivers a higher flow of exhaust gases which increases power
• A stainless steel mid-pipe mates to the computer-designed rear can for lightweight durability
• Square or round (depending on the machine) perforated steel inner cores make for optimum flow, using hi-flo technology
• FMF’s exclusive cross-weave internal packing provides longevity and maximum sound dispersion
• Elliptical aluminum can offers strategic sizing for superior performance
• Optional Quiet Core insert will provide a decrease in sound level if desired
• PowerCore 4 SA system features a patented screen-type spark arrestor that is approved by the U.S.F.S. and does not interrupt exhaust flow so there’s no performance loss
• The PowerCore 4 SA system’s strategic ports allow the sonics to evacuate more effectively with the computer-designed Performance Flow end cap
• Finally, the PowerCore 4 SA system is the new power standard via square inner-core technology; big weight savings over stock
• Combines the huge weight savings of titanium with the performance traits gleaned from FMF’s association with factory motocross teams
• Thousands of hours of both track and dyno time have resulted in power gains averaging just under 20%
• Made from military grade titanium that is light and durable – in most cases the Ti 4 is 50% lighter than stock

Images

Descriptions and notes

FOR YAMAHA 4-STROKES

FMF040145: To be used with FMF mid-pipe.