(designed by Eric Gorr for Magnum distributing under the brand name MAGNUM MX-COMPONENTS) Magnum MX National Big Bore Kit YZ250 Compression Ratio: STD Cylinder Diameter: 72 mm Cylinder Kit Type: Big Bore Displacement: 295 cc Engine Type: 2-Cycle Includes: Cylinder, Cylinder Head, Power Valve Kit, Piston Kit, Top End Gasket Kit & Wrist Pin. Size Over Standard5.60mm What’s Included? All of our kits include cylinder porting, head mods, and powervalve service. You get your choice of 3 powerbands and 2 fuel types. All the top end parts are included too like a Wiseco piston kit, top end bearing, alignment pins, and oversized gasket kit. Introducing our revolutionary 295cc 2-stroke big bore engine – a powerhouse designed to redefine performance and exhilaration in the world of motorcycling. Here’s why it outshines the standard 250cc engine: Raw Power: The 295cc displacement means more fuel-air mixture is being ignited with each stroke compared to the 250cc engine. This translates to a significant boost in horsepower and torque, giving you unparalleled acceleration and top-end speed. Torque Sensation: With the increased displacement, our 295cc engine delivers a noticeable surge of torque at lower RPMs, providing instant response and thrilling acceleration out of corners or during overtakes. This translates to a more exhilarating riding experience, especially in off-road or track environments. Enhanced Performance: The larger bore size allows for better airflow and improved combustion efficiency, resulting in smoother power delivery across the entire RPM range. Whether you’re cruising on the highway or pushing the limits on the racetrack, you’ll feel the difference in performance with every twist of the throttle. Improved Durability: Despite the increased power output, our 295cc engine is engineered with durability in mind. Advanced materials and precision engineering ensure reliable performance, ride after ride, making it suitable for both recreational riders and competitive racers alike. Lightweight Design: Despite its larger displacement, our 295cc engine is designed to maintain a lightweight and compact profile, optimizing the motorcycle’s handling characteristics. This ensures agility and nimbleness, allowing riders to confidently tackle tight corners and technical terrain with ease. Exhilarating Sound: The distinctive sound of a 2-stroke engine is amplified with the larger displacement of our 295cc model, delivering an unmistakable and adrenaline-inducing exhaust note that adds to the overall riding experience. In conclusion, our 295cc 2-stroke big bore engine represents the pinnacle of performance and excitement in the world of motorcycles. With its unparalleled power, torque, and durability, it’s the ultimate choice for riders who demand nothing but the best from their machines. Experience the thrill of the ride like never before with our 295cc powerhouse.