Restore dependable top-end performance with the Athena Cast Piston Kit, Standard Bore 47.54 mm, designed for select Yamaha 50cc scooters. This complete piston kit includes the piston, piston rings, wrist pin, and circlips required for a proper replacement installation. Athena manufactures this kit to support reliable fitment and consistent engine operation in applications using the original standard-bore specification.
The Athena part number for this kit is S4C04760006A, with vendor part number 68-4510A. It fits the 2002–2005 Yamaha YJ50RA Vino Classic and 2002–2004 Yamaha YJ50 Vino. It also fits the 1998–2000 Yamaha CW50 Zuma II. Verify the model year and engine specifications before installation to ensure compatibility with your scooter.
Built for service and engine restoration, this cast piston kit provides the essential components for replacing worn or damaged piston hardware. Installation should be completed by a qualified technician using the manufacturer’s procedures, correct clearances, and suitable assembly practices. Replace related top-end gaskets and inspect the cylinder, connecting rod, and crankshaft components as needed during the rebuild.
Fitment: 2002–2005 Yamaha YJ50RA Vino Classic; 2002–2004 Yamaha YJ50 Vino; 1998–2000 Yamaha CW50 Zuma II.
Features:
- Complete kit: Includes piston, piston rings, wrist pin, and circlips
- Piston type: Cast construction for standard-bore engine applications
- Bore size: Standard 47.54 mm specification
- Brand: Athena
- Manufacturer part number: S4C04760006A
- Vendor part number: 68-4510A
- Fitment: Yamaha YJ50RA Vino Classic, YJ50 Vino, and CW50 Zuma II applications listed
Fitment:
1997 Yamaha CW50 Zuma II
1998 Yamaha CW50 Zuma II
1999 Yamaha CW50 Zuma II
2000 Yamaha CW50 Zuma II
2001 Yamaha CW50 Zuma II
2002 Yamaha YJ50 Vino
2002 Yamaha YJ50RA Vino Classic
2003 Yamaha YJ50 Vino
2003 Yamaha YJ50RA Vino Classic
2004 Yamaha YJ50 Vino
2004 Yamaha YJ50RA Vino Classic
2005 Yamaha YJ50RA Vino Classic