{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"e929b6e89a11","name":"PISTON KIT 11-12 TM250F FI 77, FORGED WOSSNER 8839DB","sku":"56-W4958.B.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":155.58,"formatted":"£155.58"},"summary":"Wossner 8839DB forged piston kit with a 77.00mm bore (76.97mm actual) and a +0.02mm oversizing. Engineered for superior strength and design, these pistons optimize combustion chamber heat transfer and feature an elliptical design for uniform bearing surfaces under heat expansion, preventing piston collapse and distributing thrust loads evenly. Made in Germany. Includes lock part number CW16, pin part number WP059, and ring set part number 770XAS-2. Specifications: 250 cm3 displacement, 53.60mm stroke, 0.04mm clearance, -2.10 cm3 dome volume, and 22.20mm compression height. Weight is 280g.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"77mm"},{"label":"Variant Id","value":"256468"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4958_2EB_2EWO/fe9cc221dea49a62.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4958_2EB_2EWO/fe9cc221dea49a62.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4958_2EB_2EWO/a45257ae80c66f58.jpg"],"description":"Wossner 8839DB forged piston kit with a 77.00mm bore (76.97mm actual) and a +0.02mm oversizing. Engineered for superior strength and design, these pistons optimize combustion chamber heat transfer and feature an elliptical design for uniform bearing surfaces under heat expansion, preventing piston collapse and distributing thrust loads evenly. Made in Germany. Includes lock part number CW16, pin part number WP059, and ring set part number 770XAS-2. Specifications: 250 cm3 displacement, 53.60mm stroke, 0.04mm clearance, -2.10 cm3 dome volume, and 22.20mm compression height. Weight is 280g.","descriptionMarkdown":"### Wossner 8839DB Forged Piston Kit\n\nThis Wossner piston kit is precision engineered for optimal performance and durability. Designed with superior strength and advanced thermal management, this kit ensures efficient combustion and even load distribution.\n\n#### Key Features:\n\n\t\n- Forged construction for enhanced strength and longevity.\n\t\n- Engineered for superior heat transfer from the combustion chamber to cylinder walls.\n\t\n- Elliptical design provides a uniform bearing surface under heat expansion, preventing localized pressure and distributing thrust loads evenly.\n\t\n- Made in Germany.\n\t\n- Kit includes: Piston, Lock P/N CW16, Pin P/N WP059, Ring Set P/N 770XAS-2.\n\n#### Specifications:\n\n\t\n- Bore Size: 76.97mm (77.00mm nominal)\n\t\n- Dome Volume: -2.10 cm3\n\t\n- Compression Height: 22.20 mm\n\t\n- Stroke: 53.60 mm\n\t\n- Clearance: 0.04 mm\n\t\n- Weight: 280 grams","weightGrams":null,"fitments":[{"make":"TM","model":"EN F 250","cc":null,"notes":null,"years":"2011–2012"},{"make":"TM","model":"MX F 250","cc":null,"notes":null,"years":"2011–2012"},{"make":"TM","model":"TM F 250","cc":null,"notes":null,"years":"2011–2012"}],"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-11-12-tm250f-fi-77-forged-wossner-8839db","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/e929b6e89a11:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/e929b6e89a11:1"}},"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."]}}