Description
If you’re running a CR250 and want immediate throttle response without sacrificing low-end torque, the Boyesen Radiator Valve is the bolt-on upgrade that delivers. By maintaining flow velocity through the intake charge and redirecting it evenly across all ports, this valve sharpens your power delivery across the entire RPM range. Built with Boyesen’s proprietary dual-stage reed design, it’s engineered to extract measurable gains in both horsepower and torque—the kind of performance upgrade that makes a real difference on the track or trail.
Installation is straightforward: the one-piece cast aluminum construction bolts directly into your engine without requiring fabrication work. Order one set per cylinder.
- Boyesen dual-stage reeds
- One-piece cast aluminum
- Bolt-on installation
- Improves intake distribution
- Increases throttle response
- Boosts torque output
- Full RPM range gains
- CR250 ’04 specific
- MPN: RAD-02H
