AUDIO / VIDEO / NAVIGATION EXHAUST BODY / FRAME GRAPHICS / SEATS OFFROAD LUGGAGE SNOW BIKE SECURITY HANDLEBARS / CONTROLS LEVERS CABLES FOOTPEGS / FOOT CONTROLS INTAKE / FUEL SYSTEMS AIR FILTERS OIL FILTERS LIGHTING / GAUGES BATTERIES / CHARGERS ELECTRICAL SPARK PLUGS ENGINE PISTONS CLUTCH / DRIVE SUSPENSION / BEARINGS CHAIN SPROCKETS BRAKES PIT BIKE CHINESE VEHICLE PARTS INDEX x X X X X 66 EXHAUST Building performance exhaust systems for the factory race efforts improves our research and development, which improves the overall performance of our products. Adapting technology we learn on the track to our consumer products is what makes the Yoshimura name synonymous with quality and performance. One look at our RS-9 and RS-4 exhaust systems illustrates the endless cycle of development. Working in conjunction with the factory teams has provided us with new ways to increase performance, lower sound levels and centralize mass. The end result is a product that gives you an unparalleled competitive advantage. RS9 DUAL TAPERED • Dyno and track tested by Honda R&D in Japan, American Honda MX Team, and HRC All Japan MX Racing Team • 3-stage header provides broader overall range of power and throttle response. • New tail pipe divider creates smoother exhaust flow and better velocity to the right and left tail pipe • New compact forward positioned RS-9T dual muffler design provides lower center of gravity for better mass centralization • Larger RS-9T core creates improved throttle response, and power in mid and top end NEW RS-9T E-S • Enduro series mufflers have more volume than stock to provide a decrease in overall dB noise level • Includes installed spark arrestor that means it’s 100% ready to go on trails in all 50 states RS9 DUAL/RS • Parallelogram-shape muffler • Maximized internal volume • Straight, single core baffle • Tunable insert system • Spark Arrestor/Sound Insert Compatible RS4 • Pentagonal-shaped muffler • Maximized internal volume • Polyresonant duplex front chamber • Stepped, two-stage core baffle • Spark Arrestor/Sound Insert Compatible RS3 • Oval-shape muffler • Maximized internal volume • Straight, single core baffle • Spark Arrestor / Sound Insert Compatible RS2 • Diamond-shape muffler • Maximized internal volume • Straight, single core baffle • Spark Arrestor / Sound Insert Compatible RS2 ENDURO SERIES • Enduro series mufflers have more volume than stock to provide a decrease in overall dB noise level • Includes installed spark arrestor that means it’s 100% ready to go on trails in all 50 states EXHAUST
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