{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"2a5d50ec0672","name":"PISTON 94-09 TM250 66.4 DOMED, WOSSNER 8136DB TWIN RING","sku":"56-W020.B.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":3,"price":{"amount":153.68,"formatted":"£153.68"},"summary":"Wossner forged piston kit for 2-stroke engines, 66.4mm domed piston with twin rings. Features forged construction for enhanced durability and optimized heat transfer for improved performance. The elliptical design prevents localized pressure and piston collapse, while the domed piston design increases efficiency. Manufactured in Germany. Bore: 66.34 mm, Piston Size: 66.41 mm, Displacement: 577 cm&sup3;, Stroke: 72.00 mm, Clearance: 0.07 mm. Dome Volume: Domed, 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":"254274"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W020_2EB_2EWO/2fbb3e6f3141782a.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W020_2EB_2EWO/2fbb3e6f3141782a.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W020_2EB_2EWO/b9fdbfac544d5398.jpg"],"description":"Wossner forged piston kit for 2-stroke engines, 66.4mm domed piston with twin rings. Features forged construction for enhanced durability and optimized heat transfer for improved performance. The elliptical design prevents localized pressure and piston collapse, while the domed piston design increases efficiency. Manufactured in Germany. Bore: 66.34 mm, Piston Size: 66.41 mm, Displacement: 577 cm&sup3;, Stroke: 72.00 mm, Clearance: 0.07 mm. Dome Volume: Domed, 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\nThis Wossner forged piston kit is engineered for exceptional strength and performance in demanding 2-stroke motorcycle engines. Designed for optimal heat transfer, it efficiently moves heat from the combustion chamber to the cylinder walls, contributing to consistent performance. The innovative elliptical design ensures a uniform bearing surface even under extreme heat expansion, effectively reducing localized pressure and distributing thrust loads evenly to prevent piston collapse. Manufactured in Germany to high standards, this piston is built for durability and reliability.\n\n#### Key Features:\n\n\t\n- Forged Construction: Provides superior strength and enhanced durability over cast pistons.\n\t\n- Optimized Heat Transfer: Promotes efficient cooling for improved engine performance and longevity.\n\t\n- Elliptical Design: Prevents localized pressure and ensures even load distribution, resisting piston collapse.\n\t\n- Domed Piston Design: Engineered for increased combustion efficiency.\n\t\n- Twin Ring Configuration: Offers improved sealing for better compression and performance.\n\n#### Specifications:\n\n\t\n- Bore: 66.34 mm\n\t\n- Piston Size: 66.41 mm\n\t\n- Displacement: 577 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-8136db-twin-ring","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/2a5d50ec0672:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/2a5d50ec0672:1"}},"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."]}}