EXHAUST
Natural
Blue Anodized
TITANIUM POWERCORE
SLIP-ON MUFFLERS
  • Incredible horsepower gains with 99 dB sound level or less
  • 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
  • Utilize advanced multistage packing material and a Hi-Flo stainless steel formed front end cap and mid-pipe
  • PowerCore 4 HEX features a unique canister design; internal shape of core uses Hi-Flo technology that provides enhanced sonic evacuation for
  • higher flow and increased power
  • Removable spark arrestor included and optional 94 dB insert available
  • separately; see page 22
  • Natural or blue anodized muffler body
  • SUG. RETAIL ............................................................ $379.99 BODY
    FITS MODEL
    DESCRIPTION
    P ART  #
    FITS MODEL
    DESCRIPTION
    P ART  #
    HONDA
    YAMAHA
    CRF250R 04-05
    Natural
    1821-0393
    WR250F 07-14
    Natural
    1821-0579
    CRF250R 11-13
    HEX design, natural
    1821-1552
    Blue anodized
    1821-0580
    CRF250X 04-09/12-17
    Natural
    1821-0393
    YZ250F 06-09
    Natural
    1821-0579
    CRF450R 05-08
    Natural
    1821-0394
    Blue anodized
    1821-0580
    KAWASAKI
    YZ250F 10-13
    HEX design, natural
    1821-1573
    KX450F 12-15
    HEX design, natural
    1821-1561
    HEX design, blue anodized
    1821-1574
    SUZUKI
    WR450F 07-11
    Natural
    1821-0579
    RMZ450 11-12
    Natural
    1821-1527
    Blue anodized
    1821-0580
    RMZ450 13-15
    HEX design, blue anodized
    1821-1567
    YZ450F 06-09
    Natural
    1821-0579
    Blue anodized
    1821-0580
    THE Q SERIES
    Q4
    SLIP-ON MUFFLERS
  • 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
  • Q4 slip-on muffler unless noted
  • Q4
  • 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
  • Q4Hex
    Q4 HEX
  • Less sound equals more ground
  • Meets FIM World Enduro sound regulations
  • Power gains throughout the entire rpm range
  • Spark arrestor included
  • Pounds lighter than stock
  • Rugged design for off-road endurance
  • Made in the U.S.A.
  • MANUFACTURER NOTE: FOR CLOSED COURSE COMPETITION USE ONLY. NOT
    INTENDED FOR STREET USE.
    FITS MODEL
    DESCRIPTION
    P ART  #
    SUG. RETAIL FUEL/AIR
    BETA
    RR/RS 350/ 400/ 450/ 498/ 520 10-13
    Hex spark arrestor muffler
    1811-2618
    $379.99
    X-T rainer 300 15-16
    Spark arrestor muffler
    1821-1709
    179.99
    HONDA
    CRF150F 03-17
    Spark arrestor muffler
    1821-0887
    319.99 HARDWARE &
    CRF150R 07-16
    Spark arrestor muffler
    1821-0543
    379.99 MERCHANDISING
    CRF230F 03-17
    Spark arrestor muffler
    1821-0887
    319.99
    CRF230L 08-09, CRF230M 09
    Spark arrestor muffler
    1821-1017
    319.99
    CRF250L 13-15
    Hex spark arrestor muffler
    1821-1447
    389.99 CROSS
    CRF250R 04-05
    Spark arrestor muffler
    1821-0653
    379.99 REFERENCE
    CRF250R 06-09
    Spark arrestor muffler (single muffler)
    1821-0655
    379.99
    THE Q SERIES continued on next page.
    DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES.
    SEE PAGE 4 FOR IMPORTANT EMISSION DEFINITIONS AND REGULATORY COMPLIANCE AND WARRANTY INFORMATION.
    2018 PARTS UNLIMITED OFFROAD