{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"38193530e337","name":"PISTON 99-09 TM250 66.4 DOME, WOSSNER 8137DA FORGED KIT, SINGLE RING","sku":"56-W021.A.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":4,"price":{"amount":153.68,"formatted":"£153.68"},"summary":"Wossner 56-W021.A.WO forged piston kit for 2-stroke engines. Features include forged construction for enhanced durability, optimized heat transfer, an elliptical design to prevent localized pressure and piston collapse, a domed piston design for increased efficiency, and a single-ring configuration for reduced friction. Specifications: Bore 66.33 mm, Piston Size 66.40 mm, Displacement 249 cm&sup3;, Stroke 72.00 mm, Clearance 0.07 mm, Dome Volume Domed, Compression Height 38.00 mm. Includes lock CW18, pin WP033, and ring set RSB6640 x2. Manufactured in Germany.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"Variant Id","value":"254279"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W021_2EA_2EWO/25d13a8e53b2be8f.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W021_2EA_2EWO/25d13a8e53b2be8f.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W021_2EA_2EWO/adccbbd54ff20fb9.jpg"],"description":"Wossner 56-W021.A.WO forged piston kit for 2-stroke engines. Features include forged construction for enhanced durability, optimized heat transfer, an elliptical design to prevent localized pressure and piston collapse, a domed piston design for increased efficiency, and a single-ring configuration for reduced friction. Specifications: Bore 66.33 mm, Piston Size 66.40 mm, Displacement 249 cm&sup3;, Stroke 72.00 mm, Clearance 0.07 mm, Dome Volume Domed, Compression Height 38.00 mm. Includes lock CW18, pin WP033, and ring set RSB6640 x2. Manufactured in Germany.","descriptionMarkdown":"### Wossner Forged Piston Kit - 66.4mm Dome, Single Ring\n\nEnhance the strength and performance of your 2-stroke engine with this Wossner forged piston kit. Engineered in Germany, this piston is designed for superior heat transfer from the combustion chamber to the cylinder walls. Its unique elliptical design ensures a uniform bearing surface even under heat expansion, effectively reducing localized pressure and distributing thrust loads evenly to prevent piston collapse.\n\n**Key Features:**\n\n\t\n- Forged construction for exceptional durability and longevity.\n\t\n- Optimized heat transfer for improved engine efficiency and performance.\n\t\n- Elliptical piston design to prevent localized pressure buildup and potential piston collapse.\n\t\n- Domed piston shape contributes to increased combustion efficiency.\n\t\n- Single-ring configuration reduces friction and enhances overall performance.\n\n**Specifications:**\n\n\t\n- Bore Size: 66.33 mm\n\t\n- Piston Diameter: 66.40 mm\n\t\n- Displacement: 249 cm&sup3;\n\t\n- Stroke: 72.00 mm\n\t\n- Piston Clearance: 0.07 mm\n\t\n- Dome Volume: Domed\n\t\n- Compression Height: 38.00 mm","weightGrams":null,"fitments":[{"make":"TM","model":"CROSS 250","cc":null,"notes":null,"years":"1999–2019"},{"make":"TM","model":"EN 250","cc":null,"notes":null,"years":"1999–2013"},{"make":"TM","model":"ENDURO 250","cc":null,"notes":null,"years":"1999–2019"},{"make":"TM","model":"MX 250","cc":null,"notes":null,"years":"1999–2013"},{"make":"TM","model":"TM 250","cc":null,"notes":null,"years":"1999–2013"}],"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-99-09-tm250-664-dome-wossner-8137da-forged-kit-single-ring","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/38193530e337:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/38193530e337:1"}},"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."]}}