BOLD MAGENTA part numbers are new for 2026 EXHAUST PARTSCANADA .COM OFFROAD | 2026 EXHAUST 9 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* KTM 350 SX-F/XC-F 19-22 System w/ MegaBomb titanium header w/ carbon fiber end cap 1820-1874 3 500 XCF-W 20-23 System w/ single stainless steel aluminum muffler, carbon fiber end cap and stainless steel MegaBomb header w/ side panel 1820-1959 3 System w/ single anodized titanium muffler, carbon fiber end cap and stainless steel MegaBomb header w/ side panel 1820-1960 3 YAMAHA WR250F 23-24 System w/ stainless steel/aluminum slip-on muffler and stainless steel MegaBomb header and carbon fiber end cap 1820-1840 3 System w/ blue anodized titanium, titanium Megabomb header and carbon fiber end cap 1820-1841 3 YZ250F 19-26 System w/ stainless steel/aluminum slip-on muffler and stainless steel MegaBomb header and carbon fiber end cap 1820-1840 3 System w/ blue anodized titanium, titanium Megabomb header and carbon fiber end cap 1820-1841 3 YZ250FX 20-26 System w/ stainless steel/aluminum slip-on muffler and stainless steel MegaBomb header and carbon fiber end cap 1820-1840 3 System w/ blue anodized titanium, titanium MegaBomb header and carbon fiber end cap 1820-1841 3 WR450F 24-26 System w/ stainless steel/aluminum slip-on muffler and stainless steel MegaBomb header and carbon fiber end cap 1820-2047 3 System w/ blue anodized titanium muffler w/ carbon end cap 1820-2048 3 Y 450F 23-25 System w/ stainless steel/aluminum slip-on muffler and stainless steel MegaBomb header and carbon fiber end cap 1820-2047 3 System w/ blue anodized titanium muffler w/ carbon end cap 1820-2048 3 YZ450FX 24-26 System w/ stainless steel/aluminum slip-on muffler and stainless steel Megabomb header and carbon fiber end cap 1820-2047 3 System w/ blue anodized titanium muffler w/ carbon end cap 1820-2048 3 FACTORY 4.1 RCT continued on next page. FACTORY 4.1 RCT (CONT) 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 94 dB 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. FITS MODEL DESCRIPTION PART # EMIS* BETA 450 RX 15-23 Blue anodized titanium slip-on muffler w/ carbon fiber end cap 1821-2102 3 GASGAS EC 250/350F 21-23 Anodized titanium slip-on muffler w/ carbon fiber end cap 1821-2001 3 EX 350/450F, MC 450F 21-23 Stainless steel/aluminum slip-on muffler w/ carbon fiber end cap 1821-1920 3 Blue anodized titanium slip-on muffler 1821-1921 3 HONDA CRF250R 22-24 Natural aluminum finish with carbon fiber end cap 1821-2052 3 Blue anodized finish, titanium with carbon fiber end cap 1821-2053 3 1821-2102
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