EXHAUST
1820-1421
1820-1419
1820-1424
1820-1504
RACING LINE
  • Same as the Evolution system, only constructed with stainless steel
  • Connected with a sleeve joint held together with a silicon-shielded tensioning spring
  • Hexagonal mufflers feature a composite plastic outlet cap to match the design of each bike; BN mufflers use a titanium end cap
  • Carbon-fiber heat shield included where needed
  • Laser-engraved spark arrestor in certain models
  • Yamaha YZ450F muffler has an additional chamber for better torque and throttle response with less sound
  • RACING LINE WITH BN MUFFLER
    FITS MODEL
    HEADER/ MUFFLER TYPE
    PART #
    SUG. RETAIL
    FITS MODEL
    HEADER/ MUFFLER TYPE
    PART #
    SUG. RETAIL
    HONDA
    YAMAHA
    CRF250R 11-13
    Stainless/ titanium
    1820-1418 1
    $604.95
    YZ250F 10-13
    Stainless/ titanium
    1820-1423 1
    $604.95
    KAWASAKI
    YZ250F 14-16, YZ250FX 15-16
    Stainless/ titanium
    1820-1504
    897.95
    KX250F 09-16
    Stainless/ titanium
    1820-1419 1
    897.95
    YZ250F 17, YZ250FX 17
    Stainless/ titanium
    1820-1740
    1,007.95
    KX250F 17
    Stainless/ titanium
    1820-1738
    909.95
    WR250F 15-16
    Stainless/ titanium
    1820-1504
    897.95
    KX450F 09-15
    Stainless/ titanium
    1820-1420 1
    897.95
    WR250F 17
    Stainless/ titanium
    1820-1740
    1,007.95
    KX450F 16-17
    Stainless/ titanium
    1820-1669
    897.95
    YZ450F 10-13
    Stainless/ titanium
    1820-1424 1
    604.95
    SUZUKI
    YZ450F 14-17
    Stainless/ titanium
    1820-1506
    897.95
    RM-Z250 10-16
    Stainless/ titanium
    1820-1421 1
    897.95
    WR450F 16-17
    Stainless/ titanium
    1820-1506
    897.95
    RM-Z450 08-17
    Stainless/ titanium
    1820-1422 1
    897.95
    1 With spark arrestor.
    RACING LINE WITH HEXAGONAL MUFFLER
    RACING LINE WITH OVAL/D MUFFLER
    FITS MODEL
    HEADER/ MUFFLER TYPE
    PART #
    SUG. RETAIL
    FITS MODEL
    HEADER/ MUFFLER TYPE
    P ART  #
    SUG. RETAIL
    HONDA
    YAMAHA
    Stainless/ titanium (dual mufflers)
    1820-1502
    $960.95
    WR450F 12-15
    Stainless/ titanium
    1820-1311
    $873.95
    CRF250R 16-17
    Stainless/ titanium (dual mufflers)
    1820-1688
    960.95
    CRF450R 15-16
    Stainless/ titanium (dual mufflers)
    1820-1577
    960.95
    To avoid blueing, consider properly tuning the vehicle; however, the vehicle must always remain within the legal standards for emissions controls as
    defined by EPA, CARB and any other applicable state laws.
    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.
    2017 PARTS UNLIMITED OFFROAD