- 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 -- YZ 250 -- (2012, 2013, 2011, 2014, 2015, 2010, 2019, 2020, 2008, 2007, 2005, 2009, 2006, 2022, 2021, 2023, 2016, 2017, 2018); Yamaha -- YZ 250 X -- (2019, 2022, 2020, 2021, 2023, 2016, 2018, 2017)