- Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports
- Provide quicker, sharper throttle response and more horsepower throughout rpm range
- Specially-designed reed cage holds Boyesen's patented dual-stage reeds
- Boyesen's hot RAD valves ratchet up your torque
- One-piece cast aluminum bolts in easily
- Order one set per cylinder
Yamaha -- Blaster 200 4x2 -- (1991, 1994, 1997, 1992, 1989, 2004, 2000, 2003, 2001, 2006, 2002, 1999, 1988, 1996, 1993, 1995, 1998, 2005, 1990)