BOLD MAGENTA part numbers are new for 2026 PARTS-UNLIMITED.COM 2026 | STREET EXHAUST EXHAUST 56 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* 50-State 1810-28901 1 DESCRIPTION PART # EMIS* Race only 1810-2851 3 1 Exempt per CARB Executive Order (E.O.) #K-010-19 for all 19-21 Royal Enfield 650 Twin models. QUALIFIER 2-INTO-1 EXHAUST SYSTEMS FOR ROYAL ENFIELD 650 TWINS 19-24 •Stainless steel construction for durability and lasting good looks • Shed 28 lbs. while improving performance and sound •Aggressive 2:1 race styling •Deep performance sound •Removable dB insert included (race-only system) •SAE J2825 Sound Level 1 compliant •All hardware included •Made in the U.S.A. DESCRIPTION PART # EMIS* Muffler for Honda Grom 1811-4298 4 SLIP-ON MUFFLER FOR HONDA GROM 22-23 •Flat-track racer inspired styling • 3.5” diameter muffler body with a brushed stainless steel finish •Removable dB reducer •Made in the U.S.A. NOTE: Qualified manufacturer declared 50-state legal emissions-compliant part for all 22-23 Grom models. DESCRIPTION PART # EMIS* Stainless steel/black Grand National 1811-4786 4 GRAND NATIONAL SLIP-ON MUFFLER FOR TRIUMPH SPEED 400/SCRAMBLER 400X 24-25 •Stainless steel muffler body with a brushed satin finish •Race-inspired black Grand National end cap •Approximately 3 1/2 lbs. lighter than the stock muffler •Approximately 4% increase in power compared to the stock muffler •Removable dB reducer is J2825 compliant •Made in the U.S.A. Manufacturer Declared U.S. 50-state legal emissions replacement part for all 24-25 Triumph models listed. 1810-2890 1810-2851
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