Seller notes

Boyesen Dual Stage Power ReedsFits: Yamaha1988-1989 DT50, 1983 DT100, 1980-1982 MX80, 1990-1995 RT100, 1974-1975 TY80, 1975-1979 TY175, 1980 YZ50, 1974 YZ80 REVOLUTIONARY PERFORMANCE Boyesen'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. More valves equals m...

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