Boyesen 85mm RAD-30C Motorcycle Rad Valve

BOYESEN engineers embarked on a mission to create a new lineage of aerodynamic intake technology by refining the primary performance factors required to increase peak horsepower through design innovation: Aerodynamic Surface Optimization, Model-Specific Reed Petal Tensioning, Material Fuel Resistance, and Multi-Stage Reed Timing. Together, these innovations create a new technological benchmark in intake performance.

The Boyesen RAD-30C Motorcycle Rad Valve is designed to increase overall horsepower and throttle response through aerodynamic intake technology. Its design redirects the intake charge for more even distribution to the intake ports while maintaining constant flow velocity for responsive throttle operation and increased horsepower.

This one-piece rad valve is tailored to the specific model, year, and displacement for the intended application and is designed for easy installation. Manufacturer part number: RAD-30C. Vendor part number: 59-7730C.

Fitment includes 2002–2011 Yamaha YZ85 models: 2002 Yamaha YZ85, 2003 Yamaha YZ85, 2004 Yamaha YZ85, 2005 Yamaha YZ85, 2006 Yamaha YZ85, 2007 Yamaha YZ85, 2008 Yamaha YZ85, 2009 Yamaha YZ85, 2010 Yamaha YZ85, and 2011 Yamaha YZ85.

Features:

• Model-specific design: Tailored to the application’s model, year, and displacement.
• Intake charge redirection: Promotes more even distribution to the intake ports.
• Constant flow velocity: Designed for instant throttle response and increased horsepower.
• One-piece construction: Provides a one-piece design for easy installation.
• Fitment: Fits 2002–2011 Yamaha YZ85 models.

Fitment:
2002 Yamaha YZ85
2003 Yamaha YZ85
2004 Yamaha YZ85
2005 Yamaha YZ85
2006 Yamaha YZ85
2007 Yamaha YZ85
2008 Yamaha YZ85
2009 Yamaha YZ85
2010 Yamaha YZ85
2011 Yamaha YZ85
2012 Yamaha YZ85
2013 Yamaha YZ85
2014 Yamaha YZ85
2015 Yamaha YZ85
2016 Yamaha YZ85
2017 Yamaha YZ85
2018 Yamaha YZ85
2019 Yamaha YZ85
2020 Yamaha YZ85
2021 Yamaha YZ85
2022 Yamaha YZ85
2023 Yamaha YZ85
2024 Yamaha YZ85