{"product_id":"wossner-pro-series-piston-kit-for-250cc-4-stroke-78-00mm-bore","title":"Wossner Pro Series Piston Kit for 250cc 4-Stroke 78.00mm Bore","description":"\u003cp\u003eElevate your engine's performance and reliability with the \u003cstrong\u003eWossner Pro Series 250cc 4-Stroke Piston Kit\u003c\/strong\u003e, engineered for demanding motorcycle applications. This high-performance kit, featuring a precise 78.00 mm bore, delivers exceptional durability and power output for your 250cc 4-stroke engine.\u003c\/p\u003e\n\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eDesigned for the ultimate riding experience, the Wossner Pro Series piston kit is a testament to superior engineering and material science. Each \u003cstrong\u003eforged motorcycle piston\u003c\/strong\u003e is meticulously crafted from aerospace-grade aluminum alloy, ensuring unparalleled strength and heat resistance under extreme conditions. The optimized machining process achieves an ideal balance of lightness and structural integrity, particularly in critical areas like the crown and skirt wall cross-section. This results in reduced reciprocating mass for quicker throttle response and sustained power. The piston features a high 14.5:1 compression ratio, further enhancing combustion efficiency and overall engine performance. A permanent Molybdenum Disulphite (Moly) skirt coating significantly reduces friction and piston rock, contributing to quieter operation, improved longevity, and aiding in the critical break-in period. This \u003cstrong\u003e78.00 mm bore piston\u003c\/strong\u003e is a standard size A fitment, making it an ideal replacement or performance upgrade. The kit comes complete with a dual-ring piston, nitride-coated steel and cast rings, a piston pin, and retaining clips, providing everything needed for a comprehensive top-end refresh.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures \u0026amp; Highlights\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAerospace-Grade Forged Aluminum:\u003c\/strong\u003e Constructed from premium aerospace-grade aluminum alloy, these pistons offer superior strength, durability, and resistance to high temperatures and pressures compared to standard cast pistons.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAdvanced Molybdenum Disulphite Skirt Coating:\u003c\/strong\u003e Each piston skirt is treated with a permanent Moly coating, drastically reducing friction and piston rock, leading to quieter operation, extended engine life, and improved break-in efficiency.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOptimized Lightweight Design:\u003c\/strong\u003e Precision machining ensures the piston is lightweight for quicker engine response, while maintaining robust strength in crucial areas like the crown and skirt for maximum reliability.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEnhanced Compression Ratio:\u003c\/strong\u003e Engineered with a 14.5:1 compression ratio, this \u003cstrong\u003eWossner Pro Series piston\u003c\/strong\u003e optimizes combustion, delivering a noticeable boost in power and overall engine performance for your 250cc 4-stroke.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eComplete Dual Ring Piston Kit:\u003c\/strong\u003e This comprehensive kit includes the high-quality, dual-ring piston, durable nitride-coated steel and cast rings, a sturdy piston pin, and secure retaining clips, ensuring a complete and reliable installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003eProduct Name: Piston Kit\u003c\/li\u003e\n    \u003cli\u003eBrand: Wossner\u003c\/li\u003e\n    \u003cli\u003eModel: Pro Series\u003c\/li\u003e\n    \u003cli\u003eEngine Type: 4-Stroke\u003c\/li\u003e\n    \u003cli\u003eDisplacement: 250 cc\u003c\/li\u003e\n    \u003cli\u003ePiston Type: Dual Ring\u003c\/li\u003e\n    \u003cli\u003ePiston Size: Standard Size A\u003c\/li\u003e\n    \u003cli\u003eBore Size: 78.00 mm\u003c\/li\u003e\n    \u003cli\u003ePiston Diameter: 77.96 mm\u003c\/li\u003e\n    \u003cli\u003eCompression Ratio: 14.5:1\u003c\/li\u003e\n    \u003cli\u003ePiston Material: Forged Aluminum Alloy\u003c\/li\u003e\n    \u003cli\u003eSkirt Coating: Molybdenum Disulphite\u003c\/li\u003e\n    \u003cli\u003eRing Material: Nitride Coated Steel, Cast\u003c\/li\u003e\n    \u003cli\u003eUnits: Kit\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Wossner","offers":[{"title":"Default Title","offer_id":62381570425162,"sku":"09107110","price":1949.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0016\/9546\/files\/6bfa08f00e41d1542593858f849be5b8_9170d555-7d88-44fa-b827-093d59bfa4c9.webp?v=1781742708","url":"https:\/\/partsdenmark.dk\/products\/wossner-pro-series-piston-kit-for-250cc-4-stroke-78-00mm-bore","provider":"Parts Denmark","version":"1.0","type":"link"}