BOYESEN Reed - CR250 '99-'00 684

If you're running a CR250 and leaving performance on the table, your reed valve design is likely the culprit. Boyesen's dual-stage reed technology has been laboratory-proven to deliver superior flow characteristics across your entire power band, translating to sharper throttle response and stronger acceleration from low RPM through top-end. For a bolt-on part that directly impacts how your engine breathes, this is one of the highest-ROI upgrades available.

The dual-stage reed geometry permits greater flow velocity under all operating pressures, eliminating the restriction that holds back stock designs. You'll feel the difference immediately—smoother power delivery, reduced hesitation, and the kind of mid-range punch that separates dialed-in machines from stock runners.

• Dual-stage reed design
• CR250 '99-'00 fitment
• Laboratory flow-tested
• Increased velocity across range
• Enhanced start-up response
• Stronger mid-range acceleration
• Improved top-end performance
• Bolt-on installation
• OEM-comparable durability
• Boyesen engineering proven