VForce 4R Reed Valve Metrakit – ProRace & HiperPro

The VForce 4R reed valve by Metrakit is designed specifically for their competition engine casings ProRace and HiperPro. It's the very valve fitted to their own race bike, a guarantee of top-level performance.

Its 30x32mm oval diffuser delivers smooth, consistent casing filling with an immediate response every time you open the throttle. Worth knowing: this valve is identical to the Moto Tassinari VForce 4, made on the same production line and widely regarded as one of the best reed valves in 50cc competition.

Benefits:

• 📈 Unmatched performance on ProRace and HiperPro competition engines
• 🎯 Ultra-smooth filling thanks to the 30x32mm oval diffuser
• ⚡ Immediate throttle response with no hesitation
• 🏆 Identical to the Moto Tassinari VForce 4 – benchmark quality
• 🔧 Direct fit on Metrakit ProRace and HiperPro engine casings

Note: this valve can also be fitted to stock Derbi Euro 2, 3 and 4 casings, but requires prior machining. Format: 46x46x38mm.