{"product_id":"wossner-pro-series-piston-kit-for-4-stroke-77-01mm-bore","title":"Wossner Pro Series Piston Kit for 4-Stroke 77.01mm Bore","description":"\u003cp\u003eElevate your motorcycle's performance with the Wossner Pro Series 4-stroke piston kit, engineered for superior power and reliability. This premium kit delivers enhanced durability and a significant boost to your engine's efficiency, making it an ideal upgrade for demanding riders and engine builders.\u003c\/p\u003e\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eDesigned by Wossner, a leader in high-performance engine components, this Pro Series 4-stroke piston kit is crafted from a robust forged aluminum alloy, ensuring exceptional strength and longevity under extreme conditions. With a precise 77.01 mm bore size and a 13.7:1 compression ratio, it’s built to maximize power output and optimize combustion efficiency. The piston features advanced lubrication enhancements, including expanded piston pin oiling slots, radial boss machining, and annular grooves, all working in concert to significantly improve wrist pin lubrication and extend component life. Its lightweight design coupled with a tight piston wall clearance contributes to a noticeably quieter running engine, while the specialized skirt coating reduces friction, promoting a smoother break-in and sustained performance. Furthermore, the ring land treatment ensures an improved ring seal and superior oil control, critical for maintaining peak engine health and reducing oil consumption. This kit provides a comprehensive solution for engine rebuilds or performance enhancements, embodying Wossner's commitment to quality and innovation.\u003c\/p\u003e\n\u003ch2\u003eFeatures \u0026amp; Highlights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Wrist Pin Lubrication:\u003c\/strong\u003e Enhanced piston pin oiling slots, radial boss machining, and annular grooves dramatically improve lubrication, reducing wear and extending the lifespan of your wrist pin.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet \u0026amp; Efficient Operation:\u003c\/strong\u003e A lightweight piston design combined with a tight piston wall clearance minimizes mechanical noise, resulting in a smoother and quieter running engine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Friction \u0026amp; Improved Break-in:\u003c\/strong\u003e The advanced skirt coating significantly lowers friction, leading to a more efficient engine operation and a quicker, more effective break-in period.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Ring Seal \u0026amp; Oil Control:\u003c\/strong\u003e Specialized ring land treatment ensures an excellent seal for piston rings, optimizing combustion efficiency and maintaining precise oil control within the cylinder.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExceptional Durability:\u003c\/strong\u003e Featuring a double bridged forging design (where applicable), this piston offers superior structural integrity and resilience against the stresses of high-performance riding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Rebuild Solution:\u003c\/strong\u003e Each kit comes complete with the high-performance piston, precision-matched rings, a durable wrist pin, and secure pin locks, providing everything needed for a seamless installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\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\u003ePiston Material: Forged Aluminum Alloy\u003c\/li\u003e\n\u003cli\u003eCompression Ratio: 13.7:1\u003c\/li\u003e\n\u003cli\u003eBore Size: 77.01 mm\u003c\/li\u003e\n\u003cli\u003ePiston Size: 76.96 mm\u003c\/li\u003e\n\u003cli\u003eStroke Length: 53.60 mm\u003c\/li\u003e\n\u003cli\u003eBore - Oversize: +0.01 mm\u003c\/li\u003e\n\u003cli\u003eStyle: Standard Size B\u003c\/li\u003e\n\u003cli\u003eUnits: Kit\u003c\/li\u003e\n\u003cli\u003eVendor Part Number: 8942DB\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Wossner","offers":[{"title":"Default Title","offer_id":62381494272330,"sku":"09105298","price":207.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0016\/9546\/files\/6c429b4bf7f2ce4e4c3ae4fce70b801f.webp?v=1781740685","url":"https:\/\/partsdenmark.com\/it\/products\/wossner-pro-series-piston-kit-for-4-stroke-77-01mm-bore","provider":"Parts Denmark","version":"1.0","type":"link"}