BOLD MAGENTA part numbers are new for 2025 EXHAUST PARTS-UNLIMITED.COM OFFROAD | 2025 EXHAUST 15 DISCLAIMER: *EMIS (EMISSIONS CATEGORIZATION CODE). SEE PAGES 4-6 FOR CATEGORY CODES, IMPORTANT EPA/CARB EMISSION DEFINITIONS AND REGULATORY COMPLIANCE AND NOTICE REGARDING NOISE REGULATIONS. PRODUCTS NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES IF NOT CATEGORIZED AS “1” OR “4”. FITS MODEL DESCRIPTION PART # EMIS* HONDA XR50 00-03, CRF50F 04-21 System w/ aluminum muffler and stainless steel Hi-Flo header 1820-1341 3 System w/ aluminum spark arrestor muffler and stainless steel Hi-Flo header 1820-1317 3 Big Bore system w/ aluminum muffler and stainless steel Hi-Flo header 1820-1342 3 CRF70F 04, XR70R 01-03 System w/ aluminum muffler and stainless steel Hi-Flo header FMF041016 3 System w/ aluminum spark arrestor muffler and stainless steel Hi-Flo header FMF041017 3 CRF70F 05-12 System w/ aluminum muffler and stainless steel Hi-Flo header 1820-0252 3 System w/ aluminum spark arrestor muffler and stainless steel Hi-Flo header 1820-0253 3 XR80 86-90/93-00 System w/ aluminum muffler and stainless steel Hi-Flo header FMF040083 3 System w/ aluminum spark arrestor muffler and stainless steel Hi-Flo header FMF040084 3 XR80R 01-03, CRF80F 04-13 System w/ aluminum muffler and stainless steel Hi-Flo header FMF041014 3 System w/ aluminum spark arrestor muffler and stainless steel Hi-Flo header FMF041015 3 XR100R 86-00 System w/ aluminum muffler and stainless steel Hi-Flo header FMF040083 3 System w/ aluminum spark arrestor muffler and stainless steel Hi-Flo header FMF040084 3 XR100R 01-03, CRF100F 04-13 System w/ aluminum muffler and stainless steel Hi-Flo header FMF041014 3 System w/ aluminum spark arrestor muffler and stainless steel Hi-Flo header FMF041015 3 FITS MODEL DESCRIPTION PART # EMIS* HONDA (CONT) CRF110F 13-18 System w/ aluminum muffler and stainless steel Hi-Flo header 1820-1402 3 System w/ aluminum spark arrestor muffler and stainless steel Hi-Flo header 1820-1403 3 CRF125F 14-18 System w/ aluminum muffler and stainless steel Hi-Flo header 1820-1539 3 System w/ aluminum spark arrestor muffler and stainless steel Hi-Flo header 1820-1543 3 KAWASAKI KLX110/L 02-24 System w/ aluminum muffler and stainless steel Hi-Flo header FMF042005 3 System w/ aluminum spark arrestor muffler and stainless steel Hi-Flo header FMF042002 3 SUZUKI DR-Z110 03-05 System w/ aluminum muffler and stainless steel Hi-Flo header FMF042005 3 System w/ aluminum spark arrestor muffler and stainless steel Hi-Flo header FMF042002 3 YAMAHA TTR50 06-09, 13-24 System w/ aluminum muffler and stainless steel Hi-Flo header 1820-1321 3 System w/ aluminum spark arrestor muffler and stainless steel Hi-Flo header 1820-1322 3 TTR90 00-07 System w/ aluminum muffler and stainless steel Hi-Flo header FMF040080 3 TTR110 08-24 System w/ aluminum muffler and stainless steel Hi-Flo header 1820-0739 3 TTR125 00-21 (all) System w/ aluminum muffler and stainless steel Hi-Flo header 1820-0248 3 System w/ aluminum spark arrestor muffler and stainless steel Hi-Flo header FMF040071 3 MINI POWERCORE 4 EXHAUST SYSTEMS •Hi-Flo end cap boosts all-around performance •Computer designed and dyno-tested for every 4-stroke application •Enhanced sonic evacuation delivers a higher flow of exhaust gases, which increases power •A stainless steel mid-pipe mates to the computer-designed rear can for lightweight durability •Round perforated steel inner cores make for optimum flow, using hi-flo technology FITS MODEL DESCRIPTION PART # EMIS* SUZUKI DR-Z125 03-21, DR-Z125L 17-21 Slip-on muffler 1821-0521 3 RM-Z250 04-06 Spark arrestor slip-on muffler 1821-0671 3 RM-Z250 19-24 HEX spark arrestor muffler 1821-1956 3 DR-Z400 00-05 Spark arrestor muffler FMF043010 3 DR-Z400 06-07 Spark arrestor muffler 1821-2016 3 DR-Z400S 00-21 Spark arrestor muffler 1821-2016 3 DR-Z400SM 05-21 Spark arrestor muffler 1821-2016 3 RM-Z450 18-21 HEX spark arrestor muffler 1821-1855 3 DR650SE 97-20 HEX slip-on muffler 1821-2040 3 YAMAHA TW200 87-21 Spark arrestor muffler 1821-1027 3 TTR230 05-24 Spark arrestor muffler 1821-0363 3 WR250F 03-06 Spark arrestor slip-on muffler 1821-0680 3 WR250F 07-14 Spark arrestor slip-on muffler 1821-0578 3 FITS MODEL DESCRIPTION PART # EMIS* YAMAHA (CONT) XT250 08-21 Spark arrestor muffler 1821-1028 3 YZ250F 03-05 Spark arrestor slip-on muffler 1821-0680 3 YZ250F 06-09 Spark arrestor slip-on muffler 1821-0578 3 YZ250F 14-18,YZ250FX 15-19 HEX slip-on muffler 1821-1606 3 YZ250F 19-21 HEX slip-on muffler 1821-1881 3 WR450F 03-06 Spark arrestor slip-on muffler 1821-0681 3 WR450F 07-11 Spark arrestor slip-on muffler 1821-0578 3 WR450F 12-15 HEX slip-on muffler 1821-1572 3 WR450F 20 HEX slip-on muffler 1821-2010 3 YZ450F 03-05 Spark arrestor slip-on muffler 1821-0681 3 YZ450F 06-09 Spark arrestor slip-on muffler 1821-0578 3 YZ450F 10-13 HEX spark arrestor slip-on muffler 1821-1571 3 YZ450F 14-17 HEX slip-on muffler 1821-1534 3 YFZ450R 09-22 HEX slip-on muffler 1821-1836 3 YFZ450X 10-11 HEX slip-on muffler 1821-1836 3 •FMF’s exclusive cross-weave internal packing provides longevity and maximum sound dispersion •Elliptical aluminum can offers strategic sizing for superior performance •Optional Quiet Core insert will provide a decrease in sound level if desired •Available with a screen-type spark arrestor that does not interrupt exhaust flow or performance 1820-0252 POWERCORE 4 (CONT)
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