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    | Polaris RZR | RZRS | RZR4 - Yoshimura Full Exhaust SystemProduct DescriptionPolaris RZR | RZRS | RZR4 - Yoshimura Full Exhaust System by DFR. Fits: 2008-2011 LESS NOISE, LESS WEIGHT, AND MORE HP! Dragonfire Racing has done it again! Through years of industry knowledge and racing experience we have sought out the perfect partnership with Yoshimura resulting in the best all around exhaust system for the RZR, RZR S, and RZR 4. Our ultimate goal for this system was to optimize HP gains, while keeping sound decibels as low as possible, and still maintaining awesome sound quality. This system was designed with strength/durability in mind and is ready to handle anything you can throw at it! Be sure to check out the PIM2 fuel controller, DFR intake, and clutching options to maximize engine performance. System Specifications: Out performs stock exhaust system throughout the entire RPM range 1.5 pounds lighter than stock exhaust system Meets or beats USFS noise and spark-arrestor specifications Constructed entirely from 304 Stainless steel for a long lasting durable and resistant life Performance Data Power OEM 39.8 HP 32.6 lb-ft TQ Yosh Open 42.8 HP 34.0lb-ft TQ Yosh w/ Spark Arrester 42.9 HP 34.7 lb-ft TQ Sound For USFS* 2m-MAX Test RPM 3000 RPM MAX rpm, 45 deg from rear axle OEM 90.2 dba 98.3 dba Yosh Open: 96.0 dba 110 dba Yosh w/ Spark Arrester 92.5 dba 107 dba Weight OEM 17.35lbs Yosh Full System 15.86lbs * United States Forestry Service NOTE: Dyno results will vary due to Weather Conditions and Dyno systems Header and Tail-pipe Features: Polished 18 gauge 304 stainless-steel CNC mandrel bent construction Oversized step tube design Mandrel bent merge tube collector Argon purged MIG welding Step-Chamber pre muffler Retains rubber insulating mounting points and “doughnut” style gaskets Intergraded O2 sensor bung Muffler Features: 20 gauge 304 stainless-steel CNC rolled, robot welded canister shell Polished 304 stainless steel “deep-draw” end-caps Modular 3-piece bracket design Articulating silicone rubber mounting bushings Stainless-steel “closed-end” rivets Hi-flow USFS approved spark arrestor “Silent Sport” Muffler packing Embossed, silk-screened, and riveted aluminum name badge For Competition Off-Road Use Only! More ImagesRelated Items
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