Piaggio Genuine CA50 Riva 50 0.50mm 2nd O/S piston 14T-11636-00
Piaggio Genuine CA50 Riva 50 0.50mm 2nd O/S piston 14T-11636-00
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Product Description
Brand new official Yamaha factory second oversize piston designed for classic two-stroke scooter engine overhauls. Precision-cast from advanced high-temperature aluminum alloy to exact factory 0.50mm oversize specifications, engineered to restore proper cylinder wall clearance, maximum compression retention, and superior thermal stability during top-end reboring maintenance.
Vehicle Compatibility
Engineered explicitly for Yamaha classic two-stroke scooter platforms.
Verified catalog fitment layout:
| Make | Model Family | Engine Type / Displacement | Model Years |
| Yamaha | CA50 Riva 50 / Riva 50K / 50L / 50N / 50S | 50cc (Air-Cooled 2-Stroke Single Scooter) | 1983–1986 |
| Yamaha | CY50 Jog / Riva 50 (Later variants) | 50cc (Air-Cooled 2-Stroke Single Scooter) | 1994–1995 |
Fitment & Technical Details
Verify cylinder bore measurement matches the 0.50mm second oversize specification (paired with corresponding 0.50mm oversized piston rings). Check ring end gaps and piston-to-cylinder wall clearance strictly to factory service manual specifications prior to assembly. Liberally lubricate the small-end needle bearing, wrist pin, and cylinder walls with high-grade two-stroke pre-mix oil before final installation.Verification: Piston slides smoothly through the bored cylinder sleeve with exact factory-specified clearance, ensuring optimal ring sealing, reduced mechanical friction, and maximum thermal endurance.
Important: Please ensure the part number matches your motorbike before purchasing. If you have any questions about the part or its compatibility, feel free to contact us. We’re here to help!
At Dmmotorcycles, we’ve specialized in vintage and vintage sports motorcycles and parts directly from Japan since 1998. We stock a wide selection of rare genuine and high-quality aftermarket parts and continually update our inventory to meet growing demand.
Looking for a specific part? Don’t hesitate to ask! We may have it in stock even if it’s not listed online. If not, we’ll do our best to source it for you.
We’re also happy to provide guidance on installation and offer excellent after-sales support to ensure your satisfaction.
Shipping Information
We ship worldwide, carefully inspecting and securely packing all parts to ensure safe delivery. Your order will be insured and shipped quickly, with the best available shipping option chosen for speed and reliability.
Please note:
- All parts are shipped from Cyprus (Europe).
- Customers outside the EU may incur additional import taxes based on the value of the item.
How we handle your order in 4 steps
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1. Order Verification
We confirm the order and make sure the correct part number, quantity, and any special requests match what’s on the sales confirmation
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2. Quality Check
Since our parts are new old stock we Inspect the parts for any defects, scratches, or missing components to ensure it meets quality standards. otherwise will notify you before proceeding with the order.
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3. Safe and Secure packaging
- Protective Wrapping: We use bubble wrap or foam padding to wrap the part, focusing on sharp edges or delicate components.
- Boxing: We place the wrapped part inside a sturdy box, filling gaps with packing materials to prevent movement.
- Sealing and Labeling: Securely tape the box and attach the shipping label, including orientation-specific markers like "Fragile."
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4. Finalizing of Shipment
We confirm the shipping address and contact details, give the package to the Post, keep the tracking number, and then send it to the customer along with the shipment notification.
