{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"cb83870dc088","name":"PISTON KIT 84-85 CR250 66.75, WOSSNER 8156D075 HONDA MX","sku":"56-W526.P3.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":153.68,"formatted":"£153.68"},"summary":"Wossner piston kit for Honda CR250R and ATAC250 models. Features a 66.75 mm bore and a 66.69 mm actual piston diameter. Forged in Germany for high strength and optimized thermal efficiency, allowing effective heat transfer from the combustion chamber to the cylinder walls. Its elliptical design ensures uniform bearing surface during thermal expansion, reducing localized pressure and helping to prevent piston collapse. Forged construction for enhanced durability. Engineered for efficient heat dissipation. Elliptical profile promotes even thrust load distribution. Manufactured in Germany. Bore size: 66.75 mm. Actual piston diameter: 66.69 mm. Display (cm³): 246. Stroke: 72.00 mm. Clearance: 0.06 mm. Compression height: 38.00 mm. Wossner compression ratio: 2-stroke. OEM compression ratio: 2-stroke. Wossner Piston Part Number: 8156D075. Lock Part Number: CW18. Pin Part Number: WP033. Ring Set Part Number: RSB6675 x2. Alternate Part Number: 56-W526.P3.WO.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"66.75mm"},{"label":"Variant Id","value":"256693"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock55639_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock55639_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55639_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55639_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55639_4.jpg"],"description":"Wossner piston kit for Honda CR250R and ATAC250 models. Features a 66.75 mm bore and a 66.69 mm actual piston diameter. Forged in Germany for high strength and optimized thermal efficiency, allowing effective heat transfer from the combustion chamber to the cylinder walls. Its elliptical design ensures uniform bearing surface during thermal expansion, reducing localized pressure and helping to prevent piston collapse. Forged construction for enhanced durability. Engineered for efficient heat dissipation. Elliptical profile promotes even thrust load distribution. Manufactured in Germany. Bore size: 66.75 mm. Actual piston diameter: 66.69 mm. Display (cm³): 246. Stroke: 72.00 mm. Clearance: 0.06 mm. Compression height: 38.00 mm. Wossner compression ratio: 2-stroke. OEM compression ratio: 2-stroke. Wossner Piston Part Number: 8156D075. Lock Part Number: CW18. Pin Part Number: WP033. Ring Set Part Number: RSB6675 x2. Alternate Part Number: 56-W526.P3.WO.","descriptionMarkdown":"### Wossner Piston Kit for Honda CR250R and ATAC250\n\nThis Wossner piston kit is engineered for superior performance and durability. Crafted with a forged construction in Germany, it boasts optimized thermal efficiency to effectively transfer heat from the combustion chamber to the cylinder walls. The piston's unique elliptical design ensures a uniform bearing surface during thermal expansion, which minimizes localized pressure and helps prevent piston collapse.\n\n### Key Features\n\n- Forged construction for enhanced strength and longevity\n\n- Designed for efficient heat dissipation\n\n- Elliptical profile promotes even thrust load distribution for reduced wear\n\n- Manufactured to high standards in Germany\n\n### Specifications\n\n- Bore size: 66.75 mm\n\n- Actual piston diameter: 66.69 mm\n\n- Display (cm³): 246\n\n- Stroke: 72.00 mm\n\n- Clearance: 0.06 mm\n\n- Compression height: 38.00 mm\n\n- Wossner compression ratio: 2-stroke\n\n- OEM compression ratio: 2-stroke\n\n### Wossner Part Numbers\n\n- Piston Kit: 8156D075\n\n- Lock: CW18\n\n- Pin: WP033\n\n- Ring Set: RSB6675 x2","weightGrams":null,"fitments":[{"make":"HONDA","model":"ATC R 250","cc":null,"notes":null,"years":"1985–1986"},{"make":"HONDA","model":"CR 250","cc":null,"notes":null,"years":"1984–1985"},{"make":"HONDA","model":"TRX 250","cc":null,"notes":null,"years":"1985–1989"}],"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-84-85-cr250-6675-wossner-8156d075-honda-mx","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/cb83870dc088:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/cb83870dc088:1"}},"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."]}}