Power, Precision & Performance
PROX RACING PARTS
Discover top-tier racing components with PROX.
Built to endure, engineered to win.
| Size | Stock | Date |
|---|---|---|
| A - Ø53.95MM | Estimated shipping on | 2026-07-15 |
| B - Ø53.96MM | In stock, ready to ship | 2026-07-09 |
| C - Ø53.97MM | Estimated shipping on | 2026-07-15 |
The ProX piston is designed for Yamaha YZ 125 2-stroke competition engines from 2005 to 2021. Supplied as a kit, it delivers high performance, sealing, and durability in a critical component for motocross engines.
Manufactured with forged piston technology, the kit includes precision rings, a lightweight and durable piston pin, and retention clips. The pin bearing is not included, in accordance with specifications for 2-stroke engines.
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.
