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YOSHIMURA RS-4 AND RS-4D EXHAUST SYSTEMS AND SLIP-ON MUFFLERS

YOSHIMURA RS-4 AND RS-4D EXHAUST SYSTEMS AND SLIP-ON MUFFLERS

1820-1302

Our Price from:$1,094.95
1820-13021820-17881820-18301820-1878

PRODUCT INFORMATION


    RS-4 Exhaust Systems and Slip-On Mufflers
    • Delivers huge power at a very light weight
    • Offers better handling thanks to a lower centralized mass coefficient
    • Uniquely-styled pentagonal muffler body with a carbon fiber cone end cap
    • Front cap design functions as a polyresonant chamber to lower dB output while improving mid- to top-end power
    • Two-staged, stepped baffle
    • Tapered headpipe delivers optimal flow and performance
    • Titanium systems include non-spark-arrested 99 dB motocross insert (unless noted)
    • Stainless systems come with 94 dB insert installed (meets AMA competition requirements), 2 meter Max insert in the box
    RS-4D Exhaust Systems and Slip-On Mufflers
    • Championship-winning exhaust system from Yoshimura
    • Dual internal baffle design increases exhaust outflow for improved throttle control and smoother power delivery
    • Boosts horsepower throughout the power curve, especially at the low- and mid-range rpms where riders and racers need it the most
    • Full titanium header pipe
    • Titanium muffler has AMA-legal sound inserts installed
    • All necessary hardware for installation included

    NOTE: Check state and local laws before purchase.


    Select the Products You Want...

    Item Description
    Our Price
    Ready to Buy?
    MUFFLER RS4 SS/CF KTM1290
    product # 1811-3423
    $578.94
    EXHAUST RS4 TI/TI CRF250R
    product # 1820-1239
    $945.00
    EXHAUST RS4D TI/CF CRF450
    product # 1820-1302
    $1,094.95
    EXHAUST RS4S SS/SS WR450F
    product # 1820-1428
    $569.00
    EXHAUST RS4 SS/AL450SX-F
    product # 1820-1429
    $639.00
    EXHAUST RS4 SS/SS RMZ250
    product # 1820-1441
    $619.00
    EXHAUST RS4 SS/SS RMZ450
    product # 1820-1442
    $599.00
    EXHAUST RS4 SS/SS CRF250
    product # 1820-1443
    $621.05
    EXHAUST RS4 SS/SS CRF250
    product # 1820-1444
    $599.00
    EXHAUST RS4 SS/SS CRF450
    product # 1820-1446
    $639.00
    EXHAUST RS4 SS/SS KX250F
    product # 1820-1449
    $621.05
    EXHAUST RS4 SS/SS KX450F
    product # 1820-1450
    $621.05
    EXHAUST RS4 SS/AL 250 SXF
    product # 1820-1454
    $639.00
    EXHAUST RS4 SS/AL 350SX-F
    product # 1820-1482
    $639.00
    EXHAUST RS4 SS/AL YZ450F
    product # 1820-1581
    $689.00
    EXHAUST RS4 SS/SS CRF250L
    product # 1820-1638
    $563.15
    EXHAUST RS4 SS/AL KX450F
    product # 1820-1676
    $619.00
    EXHAUST RS4SG SS/AL HUS
    product # 1820-1747
    $619.00
    EXHAUST RS4 SS/SS CRF250L
    product # 1820-1787
    $589.47
    EXHAUST RS4 SS/SS KX250F
    product # 1820-1788
    $619.00
    EXHAUST RS-4 SS/SS RMZ450
    product # 1820-1789
    $619.00
    EXHAUST RS4 SS/AL YZ450F
    product # 1820-1804
    $689.00
    EXHAUST RS4 SS/AL YZ250F
    product # 1820-1812
    $689.00
    EXHAUST RS4 SS/AL KTM 450
    product # 1820-1830
    $619.00
    EXHST RS4 SS/AL/CF YZ250F
    product # 1820-1878
    $689.00
    EXHAUST RS4 SS/AL/CF 450X
    product # 1820-1886
    $679.00
    MUFFLER RS4S SS/AL WR250X
    product # 1821-1499
    $499.00
    MUFFLER RS4S SS/SS WR450F
    product # 1821-1500
    $415.78
    MUFFLER RS4 SS RMZ250
    product # 1821-1507
    $409.00
    MUFFLER RS4 SS RMZ450
    product # 1821-1508
    $409.00
    MUFFLER RS4 SS CRF450
    product # 1821-1511
    $425.00
    MUFFLER RS4 SS CRF450
    product # 1821-1512
    $425.00
    MUFFLER RS4 SS YZ250F
    product # 1821-1513
    $415.78
    MUFFLER RS4 SS YZ450F
    product # 1821-1514
    $425.00
    MUFFLER RS4 SS KX250F
    product # 1821-1515
    $415.78
    MUFFLER RS4 SS KX450F
    product # 1821-1517
    $415.78
    MUFFLER RS4 SS 250SX-F
    product # 1821-1518
    $409.00
    MUFFLER RS4 AL YZ250 2014
    product # 1821-1623
    $429.00
    MUFFLER RS4SG AL YZ450F
    product # 1821-1661
    $429.00
    MUFFLER RS4 SS/SS CRF250L
    product # 1821-1700
    $457.89
    MUFFLER RS4 AL/CF KX450F
    product # 1821-1743
    $409.00
    MUFFLER RS4SG SS/AL 450SX
    product # 1821-1765
    $425.00
    MUFFLER RS4SG AL HUS FC
    product # 1821-1815
    $409.00
    MUFFLER RS4 SS/SS CRF250L
    product # 1821-1827
    $457.89
    MUFFLER RS4 SS/CF KX250F
    product # 1821-1829
    $449.00
    MUFFLER RS-4 SS/CF RMZ450
    product # 1821-1830
    $449.00
    MUFFLER RS4 SS/AL YZ450F
    product # 1821-1842
    $469.00
    MUFLR RS4 SS/AL/CF YZ250F
    product # 1821-1927
    $489.00
    MUFFLER RS4 SS/AL/CF 450X
    product # 1821-1933
    $539.00