Boyesen RAD-34J Rad Valve Reed Cage – Yamaha YZ250 / YZ250X (2005–2025)
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BOYESEN RAD Valve Reed Cage Assembly – Fits YZ250 & YZ250X (2005–2025)
✅ Dual-Stage Power Boost | ⚙️ Easy Bolt-On | 🔥 Sharper Throttle Response
What’s Included:
• 1x Boyesen RAD Valve Reed Cage Assembly (Part #: RAD-34J)
• Pre-installed dual-stage reeds
• Aluminum casting – no modifications required
Key Features:
🔧 Easy Installation – Bolts in directly with no cutting or fab work required.
⚡ Dual-Stage Reed Technology – Patented Boyesen design increases throttle snap and broadens power.
💨 Optimized Flow – Evenly distributes intake charge for consistent combustion and better low-to-mid torque.
🏁 Track-Tested Performance – Proven gains in horsepower and response across the RPM range.
🛠️ Durable Construction – One-piece aluminum with carbon fiber reeds for long-lasting performance.
Compatibility:
• 2005–2025 Yamaha YZ250
• 2016–2025 Yamaha YZ250X
Why Choose Boyesen RAD Valves?
Designed for serious two-stroke riders, the Boyesen RAD Valve system combines precision intake tuning with innovative dual-stage reed performance. Expect faster throttle response, better low-end torque, and improved top-end pull – all without opening the motor. A go-to upgrade for racers and woods riders alike.
📦 Shipping Information
In-stock items ship next business day. ModQuad parts dispatch Monday through Thursday.
Made-to-order and custom powder coat items show their lead time at the top of this page, right next to the truck icon. These are built fresh for you, so timing varies by brand and current backlog.
Need something by a specific date? Call us at 541-668-7503 before ordering and we will check stock and ETA on that exact part. We can often point you to an in-stock alternative from another distributor.
Questions? Contact us, we respond within 24 hours.