{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"04273d77944a","name":"PISTON KIT 99-18 YZ250 66.40 A WOSSNER 8216DA YAMAHA MX 2 RING PISTON","sku":"56-W742.A.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":4,"price":{"amount":156.56,"formatted":"£156.56"},"summary":"Wossner forged piston kit for Yamaha YZ250 models. Bore size 66.40mm, actual piston size 66.35mm. Precision-manufactured in Germany for high durability and reliable performance. Features include optimised heat transfer and elliptical design for even load distribution. Specifications: Bore size 66.40 mm, Actual piston size 66.35 mm, Display (cm³) 249, Stroke (mm) 54.10, Clearance (mm) 0.06, Compression ratio 2-stroke, Compression height (mm) 28.00. Included components: Piston (Wossner PN# 8216DA, 2-ring), Lock (PN# CW18), Pin (PN# WP033), Ring Set (PN# RSB6640 x 2), Rod (PN# P2028). Cross-Reference OEM Part Numbers: 1P8-11631-00-A0, 1P8-11631-00-B0, 1P8-11631-00-C0, 1P8-11631-00-D0, 5CU-11603-10-00, 5UP-11633-00-00, 93450-19052-00. Weight: 320 grams.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"66.40mm"},{"label":"Variant Id","value":"257590"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W742_2EA_2EWO/ac6c221413539e6b.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W742_2EA_2EWO/ac6c221413539e6b.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W742_2EA_2EWO/cb06e39ca3ffc83e.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W742_2EA_2EWO/b5fa9098eb7d32a0.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W742_2EA_2EWO/25e8174ca6c1be78.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W742_2EA_2EWO/ee574644dd6634f6.jpg"],"description":"Wossner forged piston kit for Yamaha YZ250 models. Bore size 66.40mm, actual piston size 66.35mm. Precision-manufactured in Germany for high durability and reliable performance. Features include optimised heat transfer and elliptical design for even load distribution. Specifications: Bore size 66.40 mm, Actual piston size 66.35 mm, Display (cm³) 249, Stroke (mm) 54.10, Clearance (mm) 0.06, Compression ratio 2-stroke, Compression height (mm) 28.00. Included components: Piston (Wossner PN# 8216DA, 2-ring), Lock (PN# CW18), Pin (PN# WP033), Ring Set (PN# RSB6640 x 2), Rod (PN# P2028). Cross-Reference OEM Part Numbers: 1P8-11631-00-A0, 1P8-11631-00-B0, 1P8-11631-00-C0, 1P8-11631-00-D0, 5CU-11603-10-00, 5UP-11633-00-00, 93450-19052-00. Weight: 320 grams.","descriptionMarkdown":"### Wossner Piston Kit for Yamaha YZ250\n\nThis Wossner piston kit is engineered for high-performance Yamaha YZ250 motorcycles. Manufactured in Germany, the forged piston offers exceptional strength and durability, designed to withstand the rigors of two-stroke racing and performance riding.\n\n### Key Features\n\n \n- Forged piston construction for superior mechanical strength and longevity.\n \n- Optimized design for efficient heat transfer from the combustion chamber to the cylinder walls, enhancing thermal performance.\n \n- Elliptical piston design promotes even load distribution, reducing the risk of piston collapse and ensuring consistent operation.\n \n- Precision manufactured in Germany to exacting standards for reliable performance.\n \n- Includes a 2-ring piston (Wossner PN# 8216DA), lock (PN# CW18), pin (PN# WP033), ring set (PN# RSB6640 x 2), and rod (PN# P2028).\n\n### Specifications\n\n \n- Bore Size: 66.40 mm\n \n- Actual Piston Size: 66.35 mm\n \n- Displacement (cm³): 249\n \n- Stroke (mm): 54.10\n \n- Clearance (mm): 0.06\n \n- Compression Ratio: 2-stroke (Wossner and OEM compatible)\n \n- Compression Height (mm): 28.00","weightGrams":null,"fitments":[{"make":"FANTIC","model":"XX 250","cc":null,"notes":null,"years":"2022–2025"},{"make":"SUZUKI","model":"RM 250","cc":null,"notes":null,"years":"2003–2012"},{"make":"YAMAHA","model":"YZ 250","cc":null,"notes":null,"years":"1999–2025"},{"make":"YAMAHA","model":"YZ 250X","cc":null,"notes":null,"years":"2016–2025"}],"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-99-18-yz250-6640-a-wossner-8216da-yamaha-mx-2-ring-piston","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/04273d77944a:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/04273d77944a: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."]}}