BOYESEN Radiator Valve - CR125 '04 RAD-01I

If you're running a CR125 and want measurable gains in throttle response and mid-to-top-end horsepower, the Boyesen Radiator Valve is a proven intake modification that actually delivers. By optimizing intake charge distribution and maintaining flow velocity through the valve, this part sharpens your power delivery across the entire RPM range while building noticeably stronger torque. It's the kind of bolt-on upgrade that separates dialed-in machines from stock setups.

The RAD-01I uses Boyesen's patented dual-stage reed design housed in a specially-engineered reed cage to redirect the incoming charge for even distribution across your intake ports. Installation is straightforward—the one-piece cast aluminum construction bolts in without fabrication, and you'll need one set per cylinder.

• Boyesen RAD-01I valve
• CR125 '04+ fitment
• One-piece cast aluminum
• Dual-stage reed design
• Optimized flow velocity
• Improved throttle response
• Increased horsepower
• Enhanced torque delivery
• Bolt-on installation
• One set per cylinder