{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"097f8205019d","name":"PISTON 94-09 TM250 66.4 DOMED, WOSSNER 8136DA TWIN RING","sku":"56-W020.A.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":153.68,"formatted":"£153.68"},"summary":"Wossner forged piston kit 8136DA twin ring. Domed design, 66.40 mm piston size, 66.33 mm bore. Optimized for superior strength, performance, and heat transfer in 2-stroke engines. Elliptical design ensures uniform bearing surface under heat expansion, preventing piston collapse and distributing thrust loads evenly. Manufactured in Germany. Specifications: 249 cm&sup3; displacement, 72.00 mm stroke, 0.07 mm clearance, 38.00 mm compression height. Features forged construction, optimized heat transfer, elliptical design, domed piston, and two-ring configuration for improved sealing. Includes cross-reference for lock CW18, pin WP033, and ring set 980XSY.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"Variant Id","value":"254273"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock53216_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock53216_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock53216_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock53216_3.jpg"],"description":"Wossner forged piston kit 8136DA twin ring. Domed design, 66.40 mm piston size, 66.33 mm bore. Optimized for superior strength, performance, and heat transfer in 2-stroke engines. Elliptical design ensures uniform bearing surface under heat expansion, preventing piston collapse and distributing thrust loads evenly. Manufactured in Germany. Specifications: 249 cm&sup3; displacement, 72.00 mm stroke, 0.07 mm clearance, 38.00 mm compression height. Features forged construction, optimized heat transfer, elliptical design, domed piston, and two-ring configuration for improved sealing. Includes cross-reference for lock CW18, pin WP033, and ring set 980XSY.","descriptionMarkdown":"### Wossner 66.4mm Domed Piston Kit for 2-Stroke Engines\n\nEnhance your engine's performance and durability with this Wossner forged piston kit. Expertly engineered for 2-stroke applications, this piston is designed to optimize heat transfer, ensuring efficient operation and longevity. The advanced elliptical design combats localized pressure and uneven heat expansion, distributing thrust loads evenly to prevent piston collapse under stress. Manufactured to exacting standards in Germany, this piston features a domed crown for increased efficiency and a twin-ring configuration for superior sealing.\n\n#### Key Features:\n\n\t\n- Forged construction for exceptional strength and reliability.\n\t\n- Precision engineered for optimal heat transfer from the combustion chamber.\n\t\n- Elliptical piston design ensures uniform bearing surface and prevents collapse.\n\t\n- Domed piston top for enhanced combustion efficiency.\n\t\n- Twin-ring design provides improved cylinder sealing.\n\n#### Specifications:\n\n\t\n- Bore: 66.33 mm\n\t\n- Piston Size: 66.40 mm\n\t\n- Displacement: 249 cm&sup3;\n\t\n- Stroke: 72.00 mm\n\t\n- Clearance: 0.07 mm\n\t\n- Dome Volume: Domed\n\t\n- Compression Height: 38.00 mm","weightGrams":null,"fitments":[{"make":"MOTO TM","model":"EN 250","cc":null,"notes":null,"years":"1999–2025"},{"make":"MOTO TM","model":"MX 250","cc":null,"notes":null,"years":"1999–2025"},{"make":"TM","model":"CROSS 250","cc":null,"notes":null,"years":"1999–2019"},{"make":"TM","model":"EN 250","cc":null,"notes":null,"years":"1999–2016"},{"make":"TM","model":"ENDURO 250","cc":null,"notes":null,"years":"1999–2019"},{"make":"TM","model":"MX 250","cc":null,"notes":null,"years":"1999–2016"}],"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-94-09-tm250-664-domed-wossner-8136da-twin-ring","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/097f8205019d:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/097f8205019d: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."]}}