BOLD MAGENTA part numbers are new for 2025 PARTS-UNLIMITED.COM 2025 | ATV/UTV EXHAUST EXHAUST 18 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”. 4-STROKE EXHAUST SYSTEMS/SLIP-ONS The product of state-of-the-art technology and extensive real-world testing, Pro Circuit 4-stroke systems boost overall performance with explosive bottom, mid-range and peak power.And because they’re constructed to withstand even the most abusive conditions, these systems are sure to give you years of unrivaled performance off road or on the track. T-6 DUAL EXHAUST SYSTEM FOR YAMAHA RAPTOR 700R 15-20 •Designed to improve performance and power over previous systems •The ideal system for any rider or racer looking for improved performance, durability and a professional look •Features stainless steel construction throughout headpipe, Y-collector mid pipe and aluminum silencer canister •Features a removable USFS spark arrestor making it easy and fast to alternate between closed-course and off-road riding •Machined aluminum muffler brackets for increased strength and durability T-4 SILENCERS AND EXHAUST SYSTEMS •Improved power delivery and exhaust note •Body is made from lightweight 6061-T6 brushed aluminum and the end cap and intake tube are stainless steel •Tunable end caps allow fine-tuning of power delivery for different types of riding and terrain •Silencer includes wire-meshed spark arrestor that can be removed for closed-course racing EXHAUST REPLACEMENT PARTS • Quiet Tip inserts produce a more subdued exhaust note •End caps offered in a variety of sizes to allow fine-tuning of power delivery for different types of riding and terrain •Asymmetrical muffler configuration for increased packing volume •TIG precision welding •Made in the U.S.A. •Steel Allen-head screws make repacking an easy task •Exclusive E-glass pillow packing (extra packing included) PART # EMIS* 1830-0397 3 FITS MODEL DESCRIPTION PART # EMIS* HONDA TRX90 FourTrax/Sportrax 99-16 System 4QH900902 3 TRX400EX/X FourTrax/Sportrax 99-14 Silencer 4QH99400 3 TRX450R Sportrax 04-05 System 1830-00651, 2 3 FITS MODEL DESCRIPTION PART # EMIS* KAWASAKI KFX90 07-16 System 1830-0259 3 YAMAHA YFM700R Raptor 06-14 Silencer 1831-0165 3 1 Includes connector pipe. 2 Includes headpipe. DESCRIPTION PART # End cap, Quiet Tip w/ 4” base and 1.5” insert assembly kit (billet) 1861-0312 Modular Quiet Tip for 3.5” canister 1861-0019 Modular Quiet Tip for 4.0” canister 1861-0020 End cap for 3.5” canister (stainless) (pre-07 models) 1861-0017 End cap for 4.0” canister (stainless) (pre-07 models) 1861-0016 DESCRIPTION PART # Insert, 1.50”/4” base (07 models) 1861-0445 Insert, 1.625”/4” base (07 models) 1861-0444 Insert, 1.75”/4” base (07 models) 1861-0446 Spark arrestor screen 1861-0015 4QH90090 1831-0165 1861-0015 1861-0017 1861-0019 1861-0020 1861-0444 1861-0445
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