The latest carbon fiber technology with all the advantages of Boyesens patented dual-stage reed design. Utilizes a carbon fiber top reed and a durable fiberglass/epoxy bottom reed. Offers the quickest acceleration any reed can offer; maximizes horsepower and torque. Responds quickly and accurately to changes in piston speed for smooth dependable throttle response. No sacrifice in reed life like traditional carbon fiber reeds. Designed for the newest 2-stroke technologies. This item fits the following vehicle applications: 1981-1986 fits HON ATC250R 1978-1987 fits HON CR250R 1985 fits HON FL350R Odyssey 1989 fits HON FL400R Pilot 1986-1989 fits HON TRX250R 1994-1995 fits POL 300 2x4 1994-1995 fits POL 300 4x4 1994-1995 fits POL 400L 2x4 1994 fits POL 400L 4x4 1994 fits POL Big Boss 300 6x6 1993 fits POL Big Boss 350L 6x6 1994-1997 fits POL Big Boss 400L 6x6 2000-2001 fits POL Scrambler 400 2x4 1995-2000 fits POL Scrambler 400 4x4 2002 fits POL Scrambler 400 4x4 1994-1999 fits POL Sport 400L 1994-1996 fits POL Sportsman 400 4x4 1997 fits POL Sportsman 400L 1990-1992 fits POL Trail Boss 350L 2x4 1990-1992 fits POL Trail Boss 350L 4x4 1996-1999 fits POL Xplorer 300 4x4 1995-2001 fits POL Xplorer 400 4x4 1996-1997 fits POL Xpress 300 1996-1997 fits POL Xpress 400L