{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"a957fcd2412b","name":"PISTON KIT 10-13 CRF250 76.80, 8775DA WOSSNER HONDA, 13110-KRN-A40","sku":"56-W950.A.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":201.1,"formatted":"£201.10"},"summary":"Wossner forged piston kit with a 76.80mm bore size (76.76mm actual). Features a two-ring configuration and is made in Germany for superior strength and efficient heat transfer. The elliptical profile ensures even thrust load distribution, minimising wear and risk of collapse under thermal stress. Specifications include a 249 cm&sup3; displacement, 53.80 mm stroke, 0.04 mm clearance, 14.20:1 compression ratio (Wossner), 13.20:1 compression ratio (OEM), +0.10 cm&sup3; dome volume, 29.00 mm compression height, 19.50 g theoretical weight, CW16 lock part number, WP070 pin part number, and 768XAS-2 ring set part number. Cross-references OEM part number 13110-KRN-A40.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"76.80mm"},{"label":"Variant Id","value":"258327"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W950_2EA_2EWO/bf600faefdcd398c.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W950_2EA_2EWO/bf600faefdcd398c.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W950_2EA_2EWO/8802b67fb0df4968.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W950_2EA_2EWO/cef2982fc30a0d30.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W950_2EA_2EWO/ac62856101a728a9.jpg"],"description":"Wossner forged piston kit with a 76.80mm bore size (76.76mm actual). Features a two-ring configuration and is made in Germany for superior strength and efficient heat transfer. The elliptical profile ensures even thrust load distribution, minimising wear and risk of collapse under thermal stress. Specifications include a 249 cm&sup3; displacement, 53.80 mm stroke, 0.04 mm clearance, 14.20:1 compression ratio (Wossner), 13.20:1 compression ratio (OEM), +0.10 cm&sup3; dome volume, 29.00 mm compression height, 19.50 g theoretical weight, CW16 lock part number, WP070 pin part number, and 768XAS-2 ring set part number. Cross-references OEM part number 13110-KRN-A40.","descriptionMarkdown":"### Wossner Forged Piston Kit for Honda CRF250\n\nThis Wossner forged piston kit is engineered for high-performance applications, offering superior strength and durability. Designed with a two-ring configuration, it provides enhanced sealing and improved combustion efficiency. The piston features an elliptical profile that ensures even thrust load distribution, minimizing wear and preventing distortion under thermal stress.\n\n### Key Features\n\n\t\n- Forged piston construction for exceptional strength and longevity.\n\t\n- Two-ring design enhances sealing and combustion performance.\n\t\n- Elliptical piston profile promotes uniform thrust load distribution.\n\t\n- Optimized for efficient heat transfer to cylinder walls.\n\t\n- Precision manufactured in Germany.\n\n### Specifications\n\n\t\n- Bore Size: 76.80mm (actual 76.76mm)\n\t\n- Displacement: 249 cm&sup3;\n\t\n- Stroke: 53.80 mm\n\t\n- Clearance: 0.04 mm\n\t\n- Wossner Compression Ratio: 14.20:1\n\t\n- OEM Compression Ratio: 13.20:1\n\t\n- Dome Volume: +0.10 cm&sup3;\n\t\n- Compression Height: 29.00 mm\n\t\n- Theoretical Weight: 19.50 g\n\t\n- Lock Part Number: CW16\n\t\n- Pin Part Number: WP070\n\t\n- Ring Set Part Number: 768XAS-2\n\n### Cross-Reference OEM Part Numbers\n\n\t\n- 13110-KRN-A40","weightGrams":null,"fitments":[{"make":"HONDA","model":"CRF 250","cc":null,"notes":null,"years":"2010–2013"},{"make":"HONDA","model":"CRF 250R","cc":null,"notes":null,"years":"2010–2013"}],"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-10-13-crf250-7680-8775da-wossner-honda-13110-krn-a40","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/a957fcd2412b:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/a957fcd2412b: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."]}}