Power, Precision & Performance
PROX RACING PARTS
Discover top-tier racing components with PROX.
Built to endure, engineered to win.
| Size | Stock | Date |
|---|---|---|
| A - Ø47.44MM | In stock, ready to ship | 2026-06-08 |
| B - Ø47.45MM | In stock, ready to ship | 2026-06-08 |
| C - Ø47.46MM | Estimated shipping on | 2026-06-12 |
PROX piston for Yamaha YZ 85 2-stroke engines is engineered for reliable performance, optimal compression, and high durability under demanding motocross and off-road conditions. Ideal OEM replacement with professional-grade quality.
Stock Status Indicators:
🟢 Green – Item is in stock and available for immediate delivery.
🟡 Yellow – Item is in stock at the supplier. Please check the estimated shipping date.
🔴 Red – Item is out of stock.
Discover top-tier racing components with PROX.
Built to endure, engineered to win.
