{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"16b47dcef8d2","name":"PISTON 05-07 CR250 66.40 1RING, WOSSNER 8172DA FORGED KIT","sku":"56-W134+00A.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":153.68,"formatted":"£153.68"},"summary":"Wossner 66.40mm forged piston kit for superior strength and durability. This single-ring piston offers optimized performance, efficient heat transfer for improved combustion, and an elliptical design for uniform bearing surface and reduced localized pressure. Precision-engineered to prevent piston collapse. Made in Germany. Bore Size: 66.40mm (66.34mm), Standard Size (STD), Displacement: 249cc, Stroke: 72.00mm, Clearance: 0.06mm, Compression Ratio: 2-stroke, Compression Height: 38.00mm, Lock Part Number: CW18, Pin Part Number: WP033, Ring Set Part Number: RSB6640, Gasket Part Number: D2009, Rod Part Number: P2020. OEM Cross-Reference: 13110-KSK-730, 860M06640.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"66.4mm"},{"label":"Variant Id","value":"254641"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock53587_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock53587_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock53587_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock53587_3.jpg"],"description":"Wossner 66.40mm forged piston kit for superior strength and durability. This single-ring piston offers optimized performance, efficient heat transfer for improved combustion, and an elliptical design for uniform bearing surface and reduced localized pressure. Precision-engineered to prevent piston collapse. Made in Germany. Bore Size: 66.40mm (66.34mm), Standard Size (STD), Displacement: 249cc, Stroke: 72.00mm, Clearance: 0.06mm, Compression Ratio: 2-stroke, Compression Height: 38.00mm, Lock Part Number: CW18, Pin Part Number: WP033, Ring Set Part Number: RSB6640, Gasket Part Number: D2009, Rod Part Number: P2020. OEM Cross-Reference: 13110-KSK-730, 860M06640.","descriptionMarkdown":"### Wossner Forged Piston Kit for Enhanced Engine Performance\n\nUpgrade your engine with the Wossner Forged Piston Kit, engineered for superior strength and precision. This high-quality piston is designed to optimize performance and durability, featuring an advanced single-ring configuration for efficient operation. Its construction promotes uniform heat transfer to the cylinder walls, ensuring consistent expansion and minimizing localized pressure points. The elliptical design of the piston is crucial for distributing thrust loads evenly, effectively preventing piston collapse and maintaining a uniform bearing surface. Manufactured with exceptional German engineering, this piston kit is built to the highest standards, guaranteeing reliable and long-lasting performance.\n\n### Key Features\n\n\t\n- Forged Construction: Wossner forged piston provides exceptional strength and enhanced durability.\n\t\n- Single-Ring Design: Optimized for peak performance and efficiency.\n\t\n- Superior Heat Transfer: Promotes improved combustion efficiency through effective heat management.\n\t\n- Elliptical Piston Design: Ensures a uniform bearing surface and reduces localized pressure for extended life.\n\t\n- Prevents Piston Collapse: Precision engineered to maintain structural integrity under demanding conditions.\n\t\n- German Quality: Manufactured in Germany to rigorous quality standards.\n\n### Specifications\n\n\t\n- Bore Size: 66.40mm (66.34mm)\n\t\n- Size Designation: Standard (STD)\n\t\n- Compression Height: 38.00mm\n\t\n- Clearance: 0.06mm\n\t\n- Lock Part Number: CW18\n\t\n- Pin Part Number: WP033\n\t\n- Ring Set Part Number: RSB6640\n\t\n- Gasket Part Number: D2009\n\t\n- Rod Part Number: P2020\n\n### Cross-Reference OEM Part Numbers\n\n\t\n- 13110-KSK-730\n\t\n- 860M06640","weightGrams":null,"fitments":[],"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-05-07-cr250-6640-1ring-wossner-8172da-forged-kit","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/16b47dcef8d2:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/16b47dcef8d2:1"}},"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."]}}