{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"216e33a6ca34","name":"PISTON KIT YAM XS650 77.00, WOSSNER K8818D200-2 688cc","sku":"56-W9899.200.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":415.09,"formatted":"£415.09"},"summary":"This Wossner piston kit includes a set of four forged pistons with a +2.00mm oversize bore of 77.00mm, designed for Yamaha XS650 motorcycles. The pistons feature an elliptical construction for even thrust load distribution and superior heat expansion management, aiming to improve combustion heat transfer. Manufactured in Germany, this kit maintains OEM compression characteristics and fits within the standard displacement range for an approximate displacement of 679 / 688cm³. Additional specifications include a 74.00mm stroke, 0.06mm clearance, 8.40:1 OEM compression ratio, +23.40cm³ dome volume, and 29.00mm compression height. The kit includes clips (CW20), piston pin (WP068), and rings (770XDS). Part number K8818D200-2.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"77.00mm"},{"label":"Variant Id","value":"259111"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W9899_2E200_2EWO/5f3be2beb23e4fa7.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W9899_2E200_2EWO/5f3be2beb23e4fa7.jpg"],"description":"This Wossner piston kit includes a set of four forged pistons with a +2.00mm oversize bore of 77.00mm, designed for Yamaha XS650 motorcycles. The pistons feature an elliptical construction for even thrust load distribution and superior heat expansion management, aiming to improve combustion heat transfer. Manufactured in Germany, this kit maintains OEM compression characteristics and fits within the standard displacement range for an approximate displacement of 679 / 688cm³. Additional specifications include a 74.00mm stroke, 0.06mm clearance, 8.40:1 OEM compression ratio, +23.40cm³ dome volume, and 29.00mm compression height. The kit includes clips (CW20), piston pin (WP068), and rings (770XDS). Part number K8818D200-2.","descriptionMarkdown":"### Wossner Piston Kit for Yamaha XS650 - 77.00mm Bore\n\nEnhance the performance and durability of your Yamaha XS650 with this premium Wossner Piston Kit. This kit features four forged pistons designed for a +2.00mm oversized bore, bringing the bore size to 77.00mm. Wossner pistons are engineered with an elliptical design to ensure even thrust load distribution and superior heat expansion management, crucial for maximizing engine efficiency and longevity.\n\nManufactured in Germany, these pistons are crafted to maintain original equipment manufacturer (OEM) compression characteristics, providing a reliable upgrade for your engine. The advanced design also improves combustion heat transfer to the cylinder walls.\n\n**Key Features:**\n\n \n- Set of 4 high-quality forged Wossner pistons\n \n- +2.00mm oversized bore (77.00mm) with an actual piston diameter of 76.94mm\n \n- Elliptical construction for consistent load distribution and thermal stability\n \n- Designed to optimize combustion heat transfer\n \n- German engineering and manufacturing for superior quality\n \n- Maintains OEM compression ratio\n\n**Specifications:**\n\n \n- Part Number: K8818D200-2\n \n- Bore Size: 77.00mm\n \n- Oversize: +2.00mm\n \n- Displacement: 679 / 688cm&sup3;\n \n- Stroke: 74.00mm\n \n- Clearance: 0.06mm\n \n- Wossner Compression Ratio: OEM\n \n- OEM Compression Ratio: 8.40:1\n \n- Dome Volume: +23.40cm&sup3;\n \n- Compression Height: 29.00mm\n\n**Included Components:**\n\n \n- Piston Rings (Part Number: 770XDS)\n \n- Piston Pins (Part Number: WP068)\n \n- Clips (Part Number: CW20)","weightGrams":null,"fitments":[{"make":"YAMAHA","model":"XS 650","cc":null,"notes":null,"years":"1974–1981"}],"collections":[{"name":"Engine","url":"https://www.2brosparts.com/api/agent/collection/GB/engine"},{"name":"Pistons & Kits","url":"https://www.2brosparts.com/api/agent/collection/GB/pistons-kits"}],"links":{"page":"https://www.2brosparts.com/products/piston-kit-yam-xs650-7700-wossner-k8818d200-2-688cc","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/216e33a6ca34:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/216e33a6ca34:1"}},"market":{"country":"GB","countryName":"United Kingdom","locale":"en-gb","currency":"GBP","exchangeRateFromGbp":1,"pricesIncludeUkVat":true,"checkoutTax":null,"delivery":[{"name":"Standard","description":"Orders £15.00–£59.99 · 2–4 business days","carrier":null,"estimatedDays":"2–4 business days","price":{"amount":4.99,"formatted":"£4.99"},"free":false,"minimumOrder":{"amount":0,"formatted":"£0.00","gbp":0},"weightGrams":null},{"name":"Standard","description":"Orders £60.00 and up · 2–4 business days","carrier":null,"estimatedDays":"2–4 business days","price":{"amount":0,"formatted":"£0.00"},"free":true,"minimumOrder":{"amount":60,"formatted":"£60.00","gbp":60},"weightGrams":null}],"storeUrl":"https://www.2brosparts.com"},"navigate":{"start":"https://www.2brosparts.com/api/agent","search":"https://www.2brosparts.com/api/agent/search/GB/{words+joined+with+plus}"},"howToBuy":{"summary":"Build a basket for the shopper and give them one checkout link. Every URL is a plain path (no query string) and a GET. Nothing is stored between calls.","checkoutLinkFormat":"https://www.2brosparts.com/api/agent/checkout/GB/{basketKey}:{quantity},{basketKey}:{quantity}","steps":["1. Find products: follow links in these responses, or fetch https://www.2brosparts.com/api/agent/search/GB/{words+joined+with+plus} (e.g. https://www.2brosparts.com/api/agent/search/GB/brake+pads). Every product has a basketKey.","2. Optional check: https://www.2brosparts.com/api/agent/basket/GB/{basketKey}:{quantity},{basketKey}:{quantity} returns stock, totals per delivery option and the checkout link.","3. Give the shopper the checkout link. Opening it fills their basket with exactly these items (replacing what was there) and opens checkout for United Kingdom. They pay on 2brosparts.com through Stripe."],"noFetchNeeded":"You can write the checkout link yourself from basketKeys and quantities; nothing has to be fetched first. Each product also has links.buyOneNow, a ready link for one unit.","stateless":"Nothing is saved on our side. The items part of the URL is the whole basket: to change it, write the link again with the new list.","itemsFormat":"basketKey:quantity pairs joined by commas, e.g. 04f24aad4d68:2,7c1e9a0b3f2d:1. Quantity defaults to 1. Up to 50 products, 100 each.","country":"GB is the shopper's delivery country. Swap it for theirs (US, DE, FR…) in any URL; currency, tax and delivery follow it.","tips":["Put everything the shopper wants in one link.","Optionally add your name as a last path segment on checkout links (…/checkout/GB/<items>/claude) so the sale is credited to you.","The checkout link is for the shopper's browser. Do not open it yourself.","Signed-in trade account holders see their trade prices at checkout."]}}