52.4mm Big Bore Cylinder Liner Rebuild Kit — Cylinder, Piston, Rings & Gaskets for 110–125cc 4‑Stroke Engines (Lifan‑compatible) Key benefits — why you need this kit Restores engine compression and performance by replacing worn cylinder, piston, rings, and gaskets in one package. Eliminates common symptoms of wear: poor acceleration, reduced speed, hard starting, excess oil consumption, and loss of power. Saves time and cost compared with sourcing parts separately; everything needed for a standard rebuild is included. What's included 52.4mm cylinder liner assembly (big bore) Matching piston Piston ring set Full gasket set for end rebuild Compatibility and fit Designed for 4stroke engines from 110cc to 125cc. Compatible with Lifanstyle engines and other 110–125cc 4‑stroke motorcycles, pocket bikes, gokarts, and small ATVs. Suited for 4wheel motorcycles and other smallengine recreational vehicles that use Lifancompatible 110–125cc 4‑stroke platforms. Materials and durability Made from grade metal components engineered to withstand heat and combustion pressure. Precision machining and durable metallurgy reduce wear and extend service life under everyday and demanding riding conditions. Gaskets are sized and matched to the cylinder and piston for proper sealing and reliable operation after rebuild. Performance impact Replaces worn parts to restore compression and engine efficiency. Results typically include smoother acceleration, more responsive throttle feel, improved fuel economy, and regained power output. Properly installed, the kit helps maintain consistent performance over longer periods. Practical applications — how customers use it Dirt bike restoration: a scored cylinder and worn piston after heavy offroad use to recover lost power and reliability. Pocket bike or minibike : Rebuild the end on a small bike or scooter after years of riding or poor storage to avoid buying a full engine. Gokart and recreational vehicle maintenance: Upgrade or a 110–125cc go‑kart engine to restore performance and reduce smoke or oil consumption. Quick notes for buyers Ensure your engine is a 4‑stroke 110–125cc Lifancompatible model before ordering. This is a end rebuild kit; other engine components (crank, bearings, camshaft) are not included. Professional installation or a service manual is recommended if you are not experienced with engine rebuilds. Reliable replacement parts that restore function and performance for small 4‑stroke engines without additional guesswork.