{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"41e6dab5803e","name":"PISTON 94-09 TM250 66.4 DOMED, WOSSNER 8136DD TWIN RING","sku":"56-W020.D.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":6,"price":{"amount":153.68,"formatted":"£153.68"},"summary":"Wossner 56-W020.D.WO Forged Piston Kit. This piston features a domed design for increased efficiency and a twin ring configuration for improved sealing. Engineered for superior strength and performance in 2-stroke engines, it is designed for optimal heat transfer from the combustion chamber to cylinder walls. The elliptical design ensures a uniform bearing surface under heat expansion, reducing localized pressure and distributing thrust loads evenly to prevent piston collapse. Manufactured in Germany. Bore: 66.36 mm. Piston Size: 66.43 mm. Displacement: 577 cm&sup3;. Stroke: 72.00 mm. Clearance: 0.07 mm. Compression Height: 38.00 mm. Cross-reference OEM Part Numbers: Lock CW18, Pin WP033, Ring Set 980XSY.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"Variant Id","value":"254277"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W020_2ED_2EWO/2fbb3e6f3141782a.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W020_2ED_2EWO/2fbb3e6f3141782a.jpg"],"description":"Wossner 56-W020.D.WO Forged Piston Kit. This piston features a domed design for increased efficiency and a twin ring configuration for improved sealing. Engineered for superior strength and performance in 2-stroke engines, it is designed for optimal heat transfer from the combustion chamber to cylinder walls. The elliptical design ensures a uniform bearing surface under heat expansion, reducing localized pressure and distributing thrust loads evenly to prevent piston collapse. Manufactured in Germany. Bore: 66.36 mm. Piston Size: 66.43 mm. Displacement: 577 cm&sup3;. Stroke: 72.00 mm. Clearance: 0.07 mm. Compression Height: 38.00 mm. Cross-reference OEM Part Numbers: Lock CW18, Pin WP033, Ring Set 980XSY.","descriptionMarkdown":"### Wossner 66.4mm Domed Twin Ring Forged Piston Kit\n\nEnhance the performance and durability of your 2-stroke engine with this Wossner forged piston kit. Engineered in Germany, this piston is designed for superior strength and optimal heat transfer, channeling heat from the combustion chamber directly to the cylinder walls. Its innovative elliptical design ensures a consistent bearing surface even under extreme heat expansion, effectively reducing localized pressure and evenly distributing thrust loads to prevent piston collapse.\n\n**Key Features:**\n\n\t\n- Forged construction for exceptional strength and longevity.\n\t\n- Optimized heat transfer for improved engine efficiency and performance.\n\t\n- Elliptical design promotes uniform bearing surface and prevents piston collapse by evenly distributing thrust loads.\n\t\n- Domed piston design contributes to increased combustion efficiency.\n\t\n- Twin ring configuration provides superior sealing for optimal compression.\n\n**Specifications:**\n\n\t\n- Bore Diameter: 66.36 mm\n\t\n- Piston Diameter: 66.43 mm\n\t\n- Displacement: 577 cm&sup3;\n\t\n- Stroke: 72.00 mm\n\t\n- Piston Clearance: 0.07 mm\n\t\n- Compression Height: 38.00 mm\n\t\n- Dome Volume: Domed\n\n**Included Components:**\n\n\t\n- Lock Ring: CW18\n\t\n- Piston Pin: WP033\n\t\n- Ring Set: 980XSY","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-8136dd-twin-ring","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/41e6dab5803e:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/41e6dab5803e: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."]}}