APRILIA
REF 15539 Original Size: 40 × 39.2 (50 cc) Big bore Size: 47 × 39.2 (67.9…
APRILIA Platforms
| Model | APRILIA SR50 |
|---|---|
| Reference | 15539 |
| Platform / Series | APRILIA Platforms |
| Country of origin | Taiwan |
| Original size | ø40 × 39.2 mm — 50 cc |
| Big bore size | ø47 × 39.2 mm — 67.9 cc |
| Displacement gain | +17.9 cc (+35.8%) |
| Manufacturer specification | Original Size: 40 × 39.2 (50 cc) Big bore Size: 47 × 39.2 (67.9 cc) |
CHAR MO reference 15539; origin: Taiwan.
Stock specification: ø40 × 39.2 mm — 50 cc
Big-bore specification: ø47 × 39.2 mm — 67.9 cc
The listed displacement increases by 17.9 cc (35.8%), calculated from the specifications above.
Before ordering, provide the vehicle model and engine information so the sales team can confirm the applicable part number.

Send us the model or the engine details — we usually reply within one working day. OEM / ODM enquiries welcome.