BOLD MAGENTA part numbers are new for 2026 EXHAUST PARTSCANADA.COM ATV/UTV | 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”. DESCRIPTION PART # EMIS* Spark arrestor for end cap outlet bases that have “ear” tab cutouts 1860-1296 3 Stainless quiet core insert for end cap outlet bases that have “ear” tab cutouts 1860-1297 3 Long spring 1860-1288 N/A Short spring 1860-1289 N/A Spring clip 1860-1298 N/A STAGE 5 EXHAUST REPLACEMENT PARTS 1860-1288 1860-1289 1860-1296 1860-1297 1860-1298 DESCRIPTION PART # EMIS* Factory 4.1™ system 1830-0410 3 FACTORY 4.1™ FOR YAMAHA YFZ450R 09-22,YFZ450X 10-11 •Complete anodized titanium system •Features stainless steel MegaBomb header and carbon fiber end cap •Superior power and performance – horsepower improved throughout the rpm range •Exclusive proprietary Chamber Core and PowerBomb technology • Factory forward engineering centralizes mass, improves handling FITS MODEL PART # EMIS* HONDA TRX400EX 99-08,TRX400X 09-14 FMF0410251 3 YAMAHA YFZ450R 09-22,YFZ450X 10-11 1831-0517 3 FITS MODEL PART # EMIS* YAMAHA (CONT) YFM700 Raptor 06-23 1831-06472 3 1 PowerCore 4 SA. 2 PowerCore4 Hex. POWERCORE 4/4 SA MUFFLERS •Modular end cap allows easy tuning alterations • Standard Hi-Flo 2” end cap boosts all-around performance; optional smaller 1 3/4” end cap smooths power delivery; spark arrestor module adds off-road versatility •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 aluminum rear can for lightweight durability •Square or round (depending on the machine) perforated steel inner cores make for optimum flow, using hi-flo technology •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 •PowerCore 4 SA (spark arrestor) features a screen-type spark arrestor that is approved by the U.S.F.S. and does not interrupt exhaust flow so there’s no performance loss •The PowerCore 4 SA system’s strategic ports allow the sonics to evacuate more effectively with the computer-designed Performance Flow end cap •Made from premium-quality American materials •Customize with performance tuning inserts and spark arrestor module FMF041025
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