Yoshimuro RS-4 Full System

£ 551.99
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The RS-4 is a technological marvel. It features a Yoshimura duplex chamber which cancels out negative exhaust pulses; and effectively acts as a mechanical baffle before the actual perforated baffle area. This in turn improves power while lowering dB. Stainless/aluminum muffler construction with carbon fiber tip and a 96dB spark arrested insert. Optional inserts available are motocross 99dB non-spark arrested insert, and 94dB motocross non-spark arrested or 94 dB off-road spark arrested insert. Stainless tailpipe bolts right onto stock header for easy installation. Replacement Mufflers Complete Muffler Assembly Spring-mounted muffler Please call to insure correct replacement muffler Replacement Sleeves Replace your scratched, dented or discolored muffler with a new sleeve Please call to insure correct replacement sleeve Replacement Packing/Rivets Repack Kits Include Space-Age Packing Material, Rivets, and Rivet Bands Repack should be done every 6-8 Hours of use Steel Wool Baffle Wrap available upon request Replacement Nameplate/Rivets Replace your scratched, dented, or discolored muffler badge with a fresh one Low Volume Inserts/Spark Arrestors Reduce dB levels in minutes for noise sensitive race tracks or trails

Honda - CRF 250 10-14
            CRF 450 09-14
Kawasaki KXF 250 11-14
               KXF 450 10-14
KTM SXF 250 11-14
        SXF 350 11-14
        SXF 450 11-14
Suzuki RMZ 250 10-14
           RMZ 450 09-14
Yamaha YZF 250 07-14
             YZF 450 10-14
             WRF 450 12-14
The RS-4 is a technological marvel. It features a Yoshimura duplex chamber which cancels out negative exhaust pulses; and effectively acts as a mechanical baffle before the actual perforated baffle area. This in turn improves power while lowering dB. Stainless/aluminum muffler construction with carbon fiber tip and a 96dB spark arrested insert. Optional inserts available are motocross 99dB non-spark arrested insert, and 94dB motocross non-spark arrested or 94 dB off-road spark arrested insert. Stainless tailpipe bolts right onto stock header for easy installation. Replacement Mufflers Complete Muffler Assembly Spring-mounted muffler Please call to insure correct replacement muffler Replacement Sleeves Replace your scratched, dented or discolored muffler with a new sleeve Please call to insure correct replacement sleeve Replacement Packing/Rivets Repack Kits Include Space-Age Packing Material, Rivets, and Rivet Bands Repack should be done every 6-8 Hours of use Steel Wool Baffle Wrap available upon request Replacement Nameplate/Rivets Replace your scratched, dented, or discolored muffler badge with a fresh one Low Volume Inserts/Spark Arrestors Reduce dB levels in minutes for noise sensitive race tracks or trails

Honda - CRF 250 10-14
            CRF 450 09-14
Kawasaki KXF 250 11-14
               KXF 450 10-14
KTM SXF 250 11-14
        SXF 350 11-14
        SXF 450 11-14
Suzuki RMZ 250 10-14
           RMZ 450 09-14
Yamaha YZF 250 07-14
             YZF 450 10-14
             WRF 450 12-14
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