Wiseco
Wiseco Piston Kit Yamaha YZ250F '05-07 + WR250F'05-13 13.5:1
Part number: W4881M07700
€222.32
Sales price · excluding VAT and shipping
Not currently in supplier stockCatalogue updated: 6 Nov 2026, 08:21
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
- Piston Size
- 76.95 mm
- Compression Ratio - Actual
- 13.5:1
- Compression Ratio - Over Stock
- +1.0
- Total Height
- 37.70 mm
- Piston Pin Hole Diameter
- 16.00 mm
- Compression Height
- 14.30 mm
- Boss Spacing
- 17.40 mm
- Piston Head Type
- Raised top
- Skirt Coating
- Armorglide Coating
- Additional Info
- 5 Valve Pockets, Forged Piston
- OEM Reference No
- 5NL-11631-20
- Country of Origin
- USA
- GTIN
- 00193564140999
- Piston Ring Part #
- W7700YC
- Piston Pin Part #
- WS742
- Circlip Part #
- WCW16
- Package Height
- 105,41 mm
- Package Length
- 105,41 mm
- Package Weight
- 272.16 g
- Package Width
- 105,41 mm