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FMF 4-STROKE FACTORY 4.1 SLIP-ON MUFFLER For yamaha YZ250F 06-11, YZ450F 06-09, WR250F 07-13, WR450F 07-11


$424.99  $373.99
Sale: 12% off

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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.

  • -blue anodized finish.
  • -Horsepower gains throughout RPM range.
  • -Available with titanium or high strength stainless steel midpipe.
  • -94dB Insert Included

Applications:

  • Yamaha YZ250F 06-11
  • Yamaha YZ450F 06-09
  • Yamaha WR250F 07-13
  • Yamaha WR450F 07-11
  • Model: T/ 271935 -: M/ 044235
  • Manufactured by: FMF

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