Wiseco
Wiseco Piston Kit Yamaha YZ250F '01-11 "290cc" 13.0:1
Part number: W4982M08300
€240.56
Sales price · excluding VAT and shipping
3 available from supplierCatalogue updated: 6 Nov 2026, 08:59
Supplier stock; quantities are not reserved.Supplier stock is separate from stock physically held at Nick's Garage. Delivery to Cyprus and the final quotation are confirmed before ordering.
Technical specifications
- Bore - Standard
- 77.00 mm
- Bore - Actual
- 83.00 mm
- Bore - Oversize
- 6.00 mm
- Compression Ratio - Actual
- 13.0:1
- Compression Ratio - Over Stock
- +0.5
- Total Height
- 33.00 mm
- Piston Pin Hole Diameter
- 16.00 mm
- Compression Height
- 14.30 mm
- Boss Spacing
- 20.10 mm
- Piston Head Type
- Hollow
- Skirt Coating
- Armorglide Coating
- Additional Info
- 5 Valve Pockets, Forged Piston
- OEM Reference No
- 5NL-11631-20
- Country of Origin
- USA
- GTIN
- 00193564141323
- Piston Ring Part #
- W3268ZG
- Piston Pin Part #
- WS677
- Circlip Part #
- WCW16
- Package Height
- 105,41 mm
- Package Length
- 105,41 mm
- Package Weight
- 272.16 g
- Package Width
- 105,41 mm