{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"1091548b3e1a","name":"PISTON KIT 87-89 KX250 69.50, WOSSNER 8129D210 KAWASAKI MX","sku":"56-W556+210.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":159.46,"formatted":"£159.46"},"summary":"Wossner 69.50mm forged piston kit for Kawasaki KX250 models. Features a forged construction and elliptical design for enhanced thermal expansion behaviour and thrust load distribution. Manufactured in Germany, this piston supports efficient heat transfer from the combustion chamber to the cylinder walls. Specifications include a bore of 69.50mm, actual diameter of 69.44mm, displacement of 249 cm&sup3;, stroke of 70.00mm, clearance of 0.06mm, compression height of 37.00mm, and a 2-stroke compression ratio. Part number 8129D210. Includes lock CW18, pin WP033, and two RSB6950 ring sets.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"69.5mm"},{"label":"Variant Id","value":"256792"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock55738_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock55738_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55738_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55738_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55738_4.jpg"],"description":"Wossner 69.50mm forged piston kit for Kawasaki KX250 models. Features a forged construction and elliptical design for enhanced thermal expansion behaviour and thrust load distribution. Manufactured in Germany, this piston supports efficient heat transfer from the combustion chamber to the cylinder walls. Specifications include a bore of 69.50mm, actual diameter of 69.44mm, displacement of 249 cm&sup3;, stroke of 70.00mm, clearance of 0.06mm, compression height of 37.00mm, and a 2-stroke compression ratio. Part number 8129D210. Includes lock CW18, pin WP033, and two RSB6950 ring sets.","descriptionMarkdown":"### Wossner 69.50mm Forged Piston Kit for Kawasaki KX250 (1987-1989)\n\nEnhance the performance and durability of your two-stroke engine with this Wossner forged piston kit. Designed specifically for Kawasaki KX250 models, this piston offers superior strength and optimized thermal expansion. Manufactured with precision in Germany, this kit is built to withstand the demands of high-performance riding.\n\n**Key Features:**\n\n \n- Forged piston construction for exceptional strength and longevity.\n \n- Elliptical design ensures uniform bearing surface during thermal expansion.\n \n- Even distribution of thrust loads to prevent piston collapse and reduce localized stress.\n \n- Engineered for efficient transfer of combustion heat to cylinder walls for optimal operation.\n \n- German engineering ensures high quality and reliability.\n\n**Specifications:**\n\n \n- Bore Size: 69.50mm\n \n- Actual Piston Diameter: 69.44mm\n \n- Displacement: 249 cm&sup3;\n \n- Stroke: 70.00mm\n \n- Piston Clearance: 0.06mm\n \n- Compression Height: 37.00mm\n \n- Compression Ratio: 2-stroke\n\n**Included Components:**\n\n \n- Piston Kit Part Number: 56-W556+\n \n- Wossner Piston Kit Number: 8129D210\n \n- Lock Ring: CW18\n \n- Piston Pin: WP033\n \n- Ring Set: RSB6950 (x2)","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-kit-87-89-kx250-6950-wossner-8129d210-kawasaki-mx","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/1091548b3e1a:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/1091548b3e1a: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."]}}