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XS500 1975 -1979
<DT125MX 1980-1981
To suit RD400D 1977
XS250 1978-1981
RD350LC 1980-1982
RZ350K Boyesen Dual Stage Reed Valves DT125MX1980-1981 XS500 1975 -1979Boyesen's patented dual stage design incorporates a specially shaped top reed and a ported bottom reed. The top reed is lightweight and resilient for crisp throttle response at partial throttle or low RPMs. The stiffer, bottom reed is ported to provide maximum flow and horsepower at higher RPMs. The Benefits: Quicker acceleration for that all important holeshot Crisper throttle response for fast corner exits and surer jumps More horsepower throughout
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