Piston and Ring Gasket kit for Yamaha YFM 350 Grizzly 350 Raptor 350 Wolverine Big Bear Bruin Moto 4 350 1987-2011

HANQI piston ring gasket kit with a diameter of 80mm; Material: Aluminum alloy; No surface coating; Flat type Pistons are components of engines, pumps, and gas compressors. It is located inside the cylinder and achieves airtightness through piston rings.The piston is a cylindrical engine component that slides back and forth in the cylinder bore under the force generated during combustion. The piston is the movable end of the combustion chamber, while the fixed end of the combustion chamber is the cylinder head.Packaging: 1 x piston kit 1 x piston ring kit 1 x gasket kit 1 x spark plugSuitable for Yamaha Big Bear 350 4x4 (YFM350FW) 1987-1999Suitable for Yamaha Big Bear 350 2x4 (YFM350U) 1996-1999Suitable for Yamaha Bruin 350 4x4 (YFM350FA) 2004-2006Suitable for Yamaha Bruin 350 2x4 (YFM350A) 2004-2006Suitable for Yamaha Grizzly 350 2x4 (YFM350G) 2007-2011Suitable for Yamaha Grizzly 350 4x4 (YFM350FG) 2007-2014Suitable for Yamaha Grizzly 350 4x4 IRS (YFM350FGI) 2007-2011 Moto-4 350（YFM350ER）1987 - 1995Suitable for Yamaha Raptor 350 (YFM350R) 2004-2013Suitable for Yamaha Warrior 350 (YFM350X) 1987-2004Suitable for Yamaha Wolverine 350 4x4 (YFM350FX) 1995-2005Suitable for Yamaha Wolverine 350 2x4 (YFM350X) from 2006 to 2009

• ‌Broad Model Compatibility‌ – Confirmed fit for: Big Bear 350 4x4 (YFM350FW, 1987–1999), Big Bear 350 2x4 (YFM350U, 1996–1999), Bruin 350 4x4 (YFM350FA, 2004–2006), Bruin 350 2x4 (YFM350A, 2004–2006), Grizzly 350 2x4 (YFM350G, 2007–2011), and Grizzly 350 4x4 (YFM350FG, 2007–2014).
• ‌Complete Top-End Rebuild Kit‌ – Includes 1 high-precision piston (5UH-11631-00), 1 piston ring assembly (4GB-11610-00), 1 cylinder gasket (4KB-11351-00), 1 cylinder head gasket (1UY-11181-01), 2 piston pin clamps (93450-19095), 1 piston pin (55V-11633-00), and 1 spark plug — everything required for a full engine top-end overhaul on compatible Yamaha models.
• ‌Precise OEM Fitment‌ – Engineered as a direct replacement for factory components across YFM350 platforms, ensuring seamless installation and fa
• ‌High-Durability Construction‌ – Piston and internal components are manufactured to withstand extreme combustion pressures and thermal cycling, delivering consistent power delivery and extended service life under heavy-duty ATV conditions.
• ‌Critical Installation Note‌ – Always verify your existing part numbers and physical dimensions against the product images before purchase.