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Factory4.1 SL (Slip-On) ()

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The Factory 4.1 is FMF Racing's premier performance exhaust. With 30 years of racing experience behind it, the Factory 4.1 takes advantage of everything we've learned on the race track.

-Available in natural or blue anodized finish.

-Horsepower gains throughout RPM range.

-Available with titanium or high strength stainless steel midpipe.

-94dB Insert Included

Notice: Closed Course Use Only
Item ID: 044235
Type: Slip-On
Configuration: Single
Const: Titanium
Finish: Blue Anodized
Midpipe: Stainless Steel
Endcap: Stainless Steel
Spark Arrestor: Screen Insert (included)
Quiet Insert: 94dB Insert (included)
Weight: 5.2 lbs.

Make Model Year Make Model Year
YAMAHA WR250F 07-13 YAMAHA WR450F 07-11
YAMAHA WR450F 07-11
YAMAHA YZ250F 06-09 YAMAHA YZ450F 06-09
YAMAHA YZ450F 06-09
    YAM YZ250F'06-09/YZ450F'06-09/WR250F'07-13/450F'07-11 Q4 S/A MFLR   Item ID: 044232 - Q4
    For: YAMAHA WR250F 2009


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