BOLD MAGENTA part numbers are new for 2025 EXHAUST DRAGSPECIALTIES.COM OFFROAD UPDATE | 2025 EXHAUST OFFROAD DISCLAIMER: *EMIS (EMISSIONS CATEGORIZATION CODE). SEE PAGES 3-5 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”. 179 FITS MODELS DESCRIPTION PART # EMIS* KAWASAKI KX250 25 System w/ stainless header, aluminum muffler and carbon fiber end cap 1820-2083 3 System w/ blue anodized titanium muffler w/ carbon end cap 1820-2084 3 FACTORY 4.1 RCT EXHAUST SYSTEMS • 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 •Meet AMA and FIM sound requirements •QuietCore 94 dB insert included •Spark arrestor included in muffler • Feature titanium PowerBomb header and midpipe, except where noted •Made in the U.S.A. •See pages 8-9 of the Parts Unlimited 2025 Offroad Catalog for FMF’s full line of Factory 4.1 FCT Exhaust Systems 1820-2084 1820-2083 FITS MODEL DESCRIPTION PART # EMIS* KAWASAKI KX250 25 Anodized gray aluminum w/ carbon fiber end cap 1821-2163 3 Blue anodized titanium w/ black carbon fiber end cap 1821-2164 3 TRIUMPH TF 250-X 24 Anodized gray aluminum w/ carbon fiber end cap 1821-2159 3 Blue anodized titanium w/ black carbon fiber end cap 1821-2160 3 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 anodized gray aluminum or blue anodized titanium with carbon fiber end caps •Made in the U.S.A. •See pages 10-11 of the 2025 Parts Unlimited Offroad catalog for FMF’s full line of factory 4.1 RCT slip-on mufflers 1821-2160 1821-2163
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