{"product_id":"athena-p400485100024-392cc-big-bore-cylinder-kit-with-cylinder-head-68mm-bore-premium-twin-cylinder-2-stroke-performance-upgrade-compatible-with-yamaha-banshee-350-1987-2006","title":"Athena P400485100024 392cc Big Bore Cylinder Kit with Cylinder Head (68mm Bore) - Premium Twin-Cylinder 2-Stroke Performance Upgrade, Compatible with Yamaha Banshee 350 1987-2006","description":"UPGRADE YOUR SPORT ATV TO THE NEXT LEVEL OF PERFORMANCE Extract massive power, aggressive low-end torque, and unmatched acceleration from your legendary 350cc twin-cylinder, two-stroke sport ATV with the Athena Big Bore Cylinder Kit (Part No. P400485100024), a premium race-proven package engineered in Italy to seamlessly convert your factory setup into a high-revving, high-output 392cc powerhouse. Both cylinders are entirely cast from high-grade aluminum and treated with a specialized Motor-Nicksil (Nickel-Silicon) coating, ensuring exceptional thermal dissipation, minimal friction, and optimal wear resistance to deliver a substantial increase along the entire power curve while maintaining strict reliability. This complete bolt-on kit comes fully loaded with everything required for a flawless installation—including two precision-machined 68mm big bore cylinders, a dedicated high-compression modular aluminum cylinder head with redesigned combustion domes, dual premium cast piston assemblies, rings, wrist pins, clips, and a specific high-tightness multi-layer gasket set—allowing you to dramatically increase sand dune and trail performance without requiring any complex machining or structural modifications to your factory crankcase.","brand":"Athena","offers":[{"title":"Default Title","offer_id":52665839649055,"sku":"P400485100024","price":1297.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0813\/2195\/1519\/files\/ATHENA-P400485100024-detailed-image-1-01.jpg?v=1783606320","url":"https:\/\/massdepot.com\/products\/athena-p400485100024-392cc-big-bore-cylinder-kit-with-cylinder-head-68mm-bore-premium-twin-cylinder-2-stroke-performance-upgrade-compatible-with-yamaha-banshee-350-1987-2006","provider":"Mass Depot","version":"1.0","type":"link"}