Proton Adapter Bracket + 33mm Venturi – Vforce 85cr AM6 Spacing

The Proton adapter bracket changes the fixing-screw spacing of your Vforce 85cr reed valve block to the AM6 pattern: fitting it on a 50cc crankcase becomes much simpler.

The stock 31mm oval venturi isn't ideal for our engines. The included Proton 33mm venturi gives a measured gain of over half a horsepower on the dyno.

The pack includes:

• The AM6 spacing adapter bracket
• The Proton 33mm venturi

Benefits:

• 📈 Over half a horsepower gained on the dyno
• 🎯 33mm venturi calibrated for 50cc engines
• 🔧 Simplified fitting thanks to AM6 spacing
• ⚙️ Vforce 85cr reed block finally usable on an AM6 crankcase