The Athena S5F05300001B Piston Kit is a replacement B Cast Lite piston assembly designed for select Yamaha YZ85 two-stroke models. With a 52.96 mm piston size and a 13.8:1 compression ratio, this kit is engineered to support dependable engine performance, consistent combustion, and proper fitment when servicing a compatible top end.
Manufactured by Athena, this piston kit is suitable for 2002–2011 Yamaha YZ85 motorcycles. It is intended for riders, technicians, and builders completing piston replacement or top-end maintenance using components matched to the original application. Confirm cylinder condition, piston clearance, and installation specifications before assembly to ensure proper operation and service life.
The Athena S5F05300001B manufacturer part number and vendor part number identify this B Cast Lite piston kit for accurate ordering and application reference. Follow the motorcycle manufacturer’s service procedures and Athena installation guidance during installation.
Features:
- Product Type: B Cast Lite piston kit
- Piston Size: 52.96 mm
- Compression Ratio: 13.8:1
- Application: Replacement top-end component for compatible Yamaha YZ85 models
- Fitment: 2002–2011 Yamaha YZ85
- Brand: Athena
- Manufacturer Part Number: S5F05300001B
- Vendor Part Number: 68-4869B
Fitment:
2002 Yamaha YZ85
2003 Yamaha YZ85
2004 Yamaha YZ85
2005 Yamaha YZ85
2006 Yamaha YZ85
2007 Yamaha YZ85
2008 Yamaha YZ85
2009 Yamaha YZ85
2010 Yamaha YZ85
2011 Yamaha YZ85
2012 Yamaha YZ85
2013 Yamaha YZ85
2014 Yamaha YZ85
2015 Yamaha YZ85
2016 Yamaha YZ85
2017 Yamaha YZ85
2018 Yamaha YZ85
2019 Yamaha YZ85
2020 Yamaha YZ85
2021 Yamaha YZ85
2022 Yamaha YZ85
2023 Yamaha YZ85
2024 Yamaha YZ85