EXHAUST
FACTORY 4.1 RCT
SLIP-ON MUFFLERS
  • RCT (Resonance Chamber Technology) features a patented core shape that lowers
  • decibels while maintaining maximum power output
  • Internal ducts in the chambers of the RCT system increase internal volume for improved
  • exhaust flow, resulting in power gains throughout the entire range of power
  • FMF’s Factory Forward Engineering centralizes mass and is less prone to crash damage
  • Innovative rear end cap features simple installation of tuning tip inserts or spark arrestor
  • with the removal of four screws
  • Compatible with stock header or FMF header
  • Meet AMA and FIM sound requirements
  • QuietCore 94db insert included
  • Spark arrestor included in muffler
  • Available in natural titanium or blue anodized finish with titanium or carbon fiber end caps
  • Made in the U.S.A.
  • SUG.
    SUG.
    FITS MODEL DESCRIPTION
    P ART  #
    RETAIL
    FITS MODEL DESCRIPTION
    P ART  #
    RETAIL
    HONDA
    KAWASAKI (CONT)
    CRF250R 11-13 Stainless steel slip-on muffler w/ carbon fiber end cap 1821-1385
    $449.99
    KX450F 09-11
    Stainless steel slip-on muffler w/ carbon fiber end cap 1821-1392
    $424.99
    Titanium slip-on muffler w/ carbon fiber end cap
    1821-1212
    599.99
    Stainless steel/ aluminum slip-on muffler
    1821-1398
    399.99
    CRF250R 14-17 Single slip-on muffler RCT, titanium, carbon fiber end
    Titanium slip-on muffler w/ carbon fiber end cap
    1821-1227
    549.99
    cap and UFO side panel
    1821-1599 2
    599.99
    KX450F 12-15
    Stainless steel slip-on muffler w/ carbon fiber end cap 1821-1393
    424.99
    Single slip-on muffler RCT, titanium, and
    Stainless steel/ aluminum slip-on muffler
    1821-1399
    399.99
    UFO side panel
    1821-1600 2
    599.99
    Titanium slip-on muffler
    1821-1335
    499.99
    Single slip-on muffler, aluminum, carbon fiber end
    Anodized titanium slip-on muffler
    1821-1336
    499.99
    cap, and UFO side panel
    1821-1601 2
    499.99
    Titanium slip-on muffler w/ carbon fiber end cap
    1821-1337
    549.99
    Dual mufflers, anodized Ti, carbon fiber end caps
    1821-1597
    899.99
    KX450F 16-17
    Stainless steel slip-on muffler w/ carbon fiber end cap 1821-1726
    424.99
    Dual mufflers, stainless/ aluminum, carbon fiber
    Anodized titanium slip-on muffler w/ carbon fiber
    end caps
    1821-1598
    699.99
    end cap
    1821-1728
    549.99
    CRF450R 09-10 Stainless steel slip-on muffler
    1821-1065 1
    449.99
    KTM
    CRF450R 11-12 Stainless steel slip-on muffler w/ carbon fiber
    250/ 350/ 450 Stainless steel slip-on muffler w/ carbon fiber end cap 1821-1633
    399.99
    end caps
    1821-1386
    449.99
    SX-F 07-15,
    Titanium slip-on muffler
    1821-1630
    449.99
    Stainless steel aluminum slip-on muffler
    1821-1390
    424.99
    XCF 07-15,
    Titanium slip-on muffler
    1821-1215
    549.99
    XCFW 08-14, Anodized titanium slip-on muffler w/ carbon fiber
    CRF450R 13-16 Dual mufflers, stainless steel w/ carbon fiber end cap 1821-1470
    699.99
    SMR 07-10
    end cap
    1821-1631
    499.99
    Dual mufflers, blue anodized titanium w/ carbon fiber
    250/ 350/ 450
    end caps
    1821-1471
    899.99
    SX-F/XC-F
    Anodized titanium slip-on muffler w/ carbon fiber
    Stainless steel/ aluminum single slip-on muffler w/
    16-17
    end cap
    1821-1698
    499.99
    carbon fiber end cap and UFO side panel
    1821-1541 2
    499.99
    250/ 450 SX-F
    Stainless steel/ aluminum slip-on muffler w/ carbon
    Blue anodized titanium single slip-on muffler w/
    FE 15
    fiber end cap
    1821-1719
    399.99
    carbon fiber end cap and UFO side panel
    1821-1542 2
    599.99
    Titanium slip-on muffler
    1821-1720
    449.99
    Titanium single slip-on muffler and UFO side panel
    1821-1543 2
    599.99
    Anodized titanium slip-on muffler
    1821-1721
    449.99
    CRF450R/
    Dual mufflers, stainless steel w/ carbon fiber end caps 1821-1813
    774.99
    350 EXC-F
    RX17-18
    Dual mufflers, anodized Ti, carbon fiber end caps
    1821-1814
    949.99
    12-15, 500
    Aluminum slip-on muffler, carbon fiber end caps w/
    EXC 12-15
    Titanium slip-on muffler
    1821-1416
    449.99
    side panel
    1821-1825
    499.99
    SUZUKI
    Anodized titanium slip-on muffler w/ carbon fiber end
    RM-Z250 10-12 Stainless steel slip-on muffler w/ carbon fiber end cap 1821-1400
    424.99
    cap w/ side panel
    1821-1826
    599.99
    Titanium slip-on muffler w/ carbon fiber end cap
    1821-1232
    549.99
    CRF450X
    RM-Z250 13-17 Stainless steel slip-on muffler w/ carbon fiber end cap 1821-1477
    424.99
    05-09/12-14 Stainless steel/ aluminum slip-on muffler
    1821-1563
    399.99
    Stainless steel/ aluminum slip-on muffler
    1821-1476
    399.99
    HUSQVARNA
    Anodized titanium slip-on muffler
    1821-1479
    499.99
    FE 250/ 350
    Stainless steel slip-on muffler w/ carbon fiber end cap 1821-1633
    399.99
    Anodized titanium slip-on muffler w/ carbon fiber
    14-16
    Titanium slip-on muffler
    1821-1630
    449.99
    end cap
    1821-1480
    549.99
    Anodized titanium slip-on muffler w/ carbon fiber
    RMZ450 11-17 Stainless steel slip-on muffler w/ carbon fiber end cap 1821-1401
    424.99
    end cap
    1821-1631
    499.99
    Stainless steel/ aluminum slip-on muffler
    1821-1405
    399.99
    FC 250/ 450
    Stainless steel/ aluminum slip-on muffler
    1821-1640
    374.99
    RMX450Z 10
    Titanium slip-on muffler w/ carbon fiber end cap
    1821-1237
    549.99
    14-15, FE 501 Stainless steel slip-on muffler w/ carbon fiber end cap 1821-1641
    399.99
    YAMAHA
    14-15
    Titanium slip-on muffler
    1821-1642
    449.99
    YZ250F 10-13
    Stainless steel slip-on muffler w/ carbon fiber end cap 1821-1406
    424.99
    Anodized titanium slip-on muffler
    1821-1643
    449.99
    Stainless steel/ aluminum slip-on muffler
    1821-1410
    399.99
    Anodized titanium slip-on muffler w/ carbon fiber
    Anodized titanium slip-on muffler
    1821-1261
    499.99
    end cap
    1821-1644
    499.99
    Titanium slip-on muffler w/ carbon fiber end cap
    1821-1262
    549.99
    FC 250/ 350 16 Stainless steel/ aluminum slip-on muffler w/ carbon
    YZ250F 14-17
    Stainless steel/ aluminum slip-on muffler w/ carbon
    fiber end cap
    1821-1719
    399.99
    fiber end cap
    1821-1610 3
    449.99
    Titanium slip-on muffler
    1821-1720
    449.99
    Titanium slip-on muffler
    1821-1611
    599.99
    Anodized titanium slip-on muffler
    1821-1721
    449.99
    Anodized titanium slip-on muffler w/ carbon fiber
    TE250 10-12,
    end cap
    1821-1612
    599.99
    TE310 11
    Stainless steel/ aluminum slip-on muffler
    1811-2624
    424.99
    YZ450F 10-13
    Stainless steel slip-on muffler w/ carbon fiber end cap 1821-1407
    399.99
    TC449 11-13
    Titanium slip-on muffler
    1821-1318
    499.99
    Titanium slip-on muffler w/ carbon fiber end cap
    1821-1267
    499.99
    FC 450 16
    Stainless steel/ aluminum slip-on muffler w/ carbon
    fiber end cap
    1821-1719
    399.99
    YZ450F 14-17
    Stainless steel slip-on muffler w/ carbon fiber end cap 1821-1535
    449.99
    Titanium slip-on muffler
    1821-1720
    449.99
    Titanium slip-on muffler
    1821-1536
    599.99
    Anodized titanium slip-on muffler w/ carbon fiber
    Anodized titanium slip-on muffler
    1821-1721
    449.99
    end cap
    1821-1537
    599.99
    KAWASAKI
    YZ450F 18
    Stainless steel/ aluminum slip-on muffler w/ carbon
    KX250F 09-16
    Stainless steel slip-on muffler w/ carbon fiber end cap 1821-1391
    424.99
    fiber end cap
    1821-1838
    449.99
    Stainless steel/ aluminum slip-on muffler
    1821-1397
    399.99
    Titanium slip-on muffler
    1821-1839
    599.99
    Titanium slip-on muffler w/ carbon fiber end cap
    1821-1222
    549.99
    Titanium slip-on muffler w/ carbon fiber end cap
    1821-1840
    649.99
    KX250F 17-18
    Stainless steel/ aluminum slip-on muffler w/ carbon
    1 No spark arrestor.
    fiber end cap
    1821-1796
    424.99
    2 Includes left-side rear number plate by UFO, designed for use with a single muffler,
    Titanium slip-on muffler
    1821-1797
    499.99
    P ART #0520-1300 (also available separately).
    Anodized titanium slip-on muffler w/ carbon fiber
    3 QuietCore not included.
    end cap, V2
    1821-1820
    549.99
    Stainless steel/ aluminum slip-on muffler w/ carbon
    fiber end cap
    1821-1828
    424.99
    Titanium slip-on muffler
    1821-1835
    499.99
    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