OFFROAD BOLD MAGENTA part numbers are new for 2024 PARTS-UNLIMITED.COM 2024 | OFFROAD UPDATE EXHAUST 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”. 190 FITS MODELS DESCRIPTION PART # EMIS* KAWASAKI KX450F 24 System w/ stainless header, aluminum muffler and carbon fiber end cap 1820-2045 3 System w/ blue anodized titanium muffler w/ carbon end cap 1820-2046 3 YAMAHA YZ450F 23-24 System w/ stainless header, aluminum muffler 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 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 2024 Offroad Catalog for FMF’s full line of Factory 4.1 FCT Exhaust Systems 1820-2045 1820-2047 FITS MODEL DESCRIPTION PART # EMIS* KAWASAKI KX450F 24 Blue titanium slip-on muffler w/ carbon fiber end cap 1821-2094 3 Grey aluminum slip on muffler w/ black carbon fiber end cap 1821-2093 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 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. •See pages 10-11 of the 2024 Parts Unlimited Offroad catalog for FMF’s full line of factory 4.1 RCT slip-on mufflers FITS MODEL PART # EMIS* KAWASAKI KX450F 24 1821-2092 3 THE Q SERIES Q4 HEX •Less sound equals more ground •Meets FIM World Enduro sound regulations •Power gains throughout the entire rpm range •Spark arrestor included •Pounds lighter than stock •Rugged design for off-road endurance •Made in the U.S.A. •See pages 12-13 of the 2024 Parts Unlimited Offroad catalog for FMF’s full line of Q Series slip-on mufflers NOTE: FOR CLOSED COURSE COMPETITION USE ONLY. NOT INTENDED FOR STREET USE. 1821-2093 1821-2094
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