Product Overview This high-performance Piston Ring Set is engineered specifically for the CG 125cc 4-stroke vertical engine. Crafted from premium alloy steel, these rings are designed to restore engine compression, improve combustion efficiency, and ensure a long-lasting seal between the piston and cylinder wall under extreme riding conditions. Product Compatibility Optimized for the classic CG 125cc (Pushrod/OHV) vertical engine platform. Vehicle Type Common Compatible Brands & Models ATV / Quad TaoTao, Buyang, Coolster, Kazuma, Sunl (125cc Vertical Models) Dirt Bike Apollo, SSR, X-Pro, and other 125cc Pit Bikes Moped / Scooter 125cc Vertical Engine Mopeds Engine Series CG125, 156FMI, 157FMI (Vertical Pushrod Engine) Engine Brands Lifan, Zongshen, Loncin, YinXiang Specifications Component Metric Measurement Material / Type Compatible Bore 56.5mm Standard CG125 Size Engine Type 4-Stroke Vertical Pushrod / OHV Ring Material High-Strength Alloy Steel High-Temperature Resistant Surface Treatment Reduced Friction Coating Anti-Wear / Rustproof Package Includes Full Set (Compression & Oil Rings) Ready to Install Key Features High-Strength Alloy Steel: Constructed from premium materials that offer exceptional resistance to high temperatures and abrasion, even under heavy-duty operation. Enhanced Compression Ratio: Precision-engineered to ensure a tight fit against the cylinder wall, effectively preventing blow-by gas leakage and maximizing power output. Reduced Friction Technology: The surface-treated rings minimize mechanical friction with the cylinder, significantly extending the service life of both the piston and the engine block. Precision Manufacturing: Every ring is machined to exacting tolerances, meeting rigid quality standards to ensure high performance and mechanical reliability. Optimized Combustion Efficiency: By providing a superior airtight seal, this kit helps the engine achieve more complete fuel combustion and smoother idling.