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Original Kymco piston ring set for 50cc 4-stroke scooter engines with a cylinder diameter of 39mm. With OEM part number 13011-KBG-9010, this is the factory specification — not an aftermarket alternative, but the purity installed by Kymco itself. Piston rings ensure the seal between the piston and the cylinder wall: they maintain compression, prevent oil leakage into the combustion chamber, and contribute to determining oil consumption and engine power.
The set fits Kymco Agility and Filly 50cc 4-stroke models, as well as Benzhou and similar Chinese 4-stroke 50cc scooter engines with the same 39mm bore. When replacing due to wear or during a cylinder overhaul: always check the cylinder diameter against the inner measurement before installing the new rings — a worn cylinder may need honing.
| Product type | Piston ring |
|---|---|
| Brand | Kymco |
| Suitable for brand | Benzhou, Kymco |
| Suitable for model | Agility, filly, Kymco Agility, Kymco Filly |
| Vehicle type | Moped, Scooter |
| Type | 4-stroke |
| OEM | Ja |
| Size | 39 mm |
The expected delivery time is indicated above with the item. Shipped with tracking; free shipping from €75 (NL, BE, DE). Not satisfied? Return within 28 days via our return form.
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