Boyesen 615 Power Reed For: Cagiva 250 WMX 1984-1989; Cagiva 260 all models; Cagiva 500 WMX all models; Husqvarna 260 all models, CR250 and WR250 1989-1998, WXC250 and WXE250 1996 For: Kawasaki KX250 1983-1988, KX500 1986-2004, Tecate 3 all models, Tecate 4 all models; Suzuki LT250 1987, LT500 1987, RM250 1981-1986, RM465 and RM500 all models 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 Longer overall life: Boyesen power reeds outlast all other aftermarket reed petals Power reeds use a patented dual stage fiberglass design for more air flow, more air velocity and more power; minor change gives major horsepower improvements and fuel economy