GCIUEMMH 125cc 4-Stroke Engine Motor Kit - 5.5KW Electric Start Replacement Engine Motor Transmission, Air Cooled, CDI Ignition for ATV, Dirt Bike, Go Kart, Pit Bike (Fits Atomik, Pitpro, TDR, Hummer

【Military-Grade Durable Construction】 - Engineered with premium iron-aluminum alloy through precision die-casting and spray painting, this semi auto engine delivers unmatched rustproof and impact-resistant performance. The reinforced housing withstands extreme stress without cracking, offering 3X longer lifespan than standard engines - built to conquer the toughest terrains year after year 【5.5KW Beast Performance】 - Experience dominating power with our 4-stroke single-cylinder engine that generates 7500±375 RPM and 8.5N·m torque - enough to handle steep inclines, muddy trails, and heavy loads effortlessly. The parallel cylinder design ensures smoother acceleration and 25% better fuel efficiency compared to conventional engines 【Precision Direct Replacement】 - The motor complete kit is designed as an exact OEM replacement with trouble-free installation. All mounting points, connectors, and interfaces match factory specifications perfectly - no modifications required. Comes with comprehensive instructions for a seamless 30-minute swap that even DIY beginners can complete 【Safety-Enhanced Engineering】 - Our 4 speed cdi engine motor features advanced vibration dampening and thermal management systems that reduce failure risks by 40%. The balanced crankshaft design minimizes harmonic vibrations for improved vehicle control, while the reinforced casing protects critical components from trail debris impact 【Pro-Level Refinement】 - Manufactured with aircraft-grade machining tolerances for buttery-smooth operation. Noticeably quieter than competitors with 35% reduced mechanical noise. The precision-finished components deliver car-like refinement while maintaining brutal off-road capability - the ultimate combination of comfort and performance.