BOLD MAGENTA part numbers are new for 2025 EXHAUST PARTSCANADA .COM OFFROAD | 2025 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* SUZUKI RMZ450 18-23 System w/ MegaBomb header, anodized, w/ carbon fiber end cap 1820-1819 3 YAMAHA WR250F 15-18 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 19-24 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 YZ450F 20-22 System w/ aluminum muffler and stainless steel Megabomb header and carbon fiber end cap 1820-1931 3 System w/ anodized muffler w/ carbon fiber end cap and titanium MegaBomb header 1820-1932 3 YZ450F 23-24 System w/ stainless steel/aluminum slip-on muffler and stainless steel Megabomb header and carbon fiber end cap 1820-2047 3 YZ450F 23-25 System w/ anodized muffler w/ carbon fiber end cap and titanium MegaBomb header 1820-2048 3 FITS MODEL DESCRIPTION PART # EMIS* BETA 350/390/430/480 RR 20-25 Anodized titanium slip-on muffler w/ carbon fiber end cap 1821-2007 3 450 RX 24-25 Anodized titanium slip-on muffler w/ carbon fiber end cap 1821-2102 3 GASGAS EC 250/350F 21 Anodized titanium slip-on muffler w/ carbon fiber end cap 1821-2001 3 EC 250/350F 21 Slip-on muffler w/ stainless steel mid-pipe 1821-2000 3 EX/MC 250F 21-23 Anodized titanium slip-on muffler 1821-1925 3 EX/MC 350F/450F 21-23 Stainless steel/aluminum slip-on muffler w/ carbon fiber end cap 1821-1920 3 Anodized titanium slip-on muffler 1821-1921 3 FACTORY 4.1 RCT SLIP-ON MUFFLERS • RCT (Resonance Chamber Technology) features a 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 FACTORY 4.1 RCT (CONT) •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, blue anodized titanium or stainless steel/aluminum mufflers with titanium or carbon fiber end caps •Made in the U.S.A. 1821-2007 1821-2035 FACTORY 4.1 RCT continued on next page.
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