{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"3cf7d0ca5292","name":"PISTON KIT 99-18 YZ250 1-RING, WOSSNER 8217DA 66.40 A","sku":"56-W742.A.WO.1R","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":153.68,"formatted":"£153.68"},"summary":"Wossner piston kit with a 66.40mm bore (actual size 66.35mm) and single-ring design. Forged in Germany, it offers durability, thermal efficiency, and reduced friction. Features include an elliptical design for even load distribution, engineered heat dissipation, and precision manufacturing. Specifications: Bore size 66.40 mm, actual piston size 66.35 mm, Display (cm³) 249, Stroke (mm) 68.00, Clearance (mm) 0.05, Compression ratio 2-stroke (Wossner and OEM), Compression height (mm) 38.00. Includes piston Wossner PN# 8217DA, gasket PN# D2041, lock PN# CW18, pin PN# WP033, ring set PN# RSB6640, and rod PN# P2028. Old OEM part number: 56-W056.WO.A. Weight 316 grams.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"Variant Id","value":"257591"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock56537_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock56537_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock56537_2.jpg"],"description":"Wossner piston kit with a 66.40mm bore (actual size 66.35mm) and single-ring design. Forged in Germany, it offers durability, thermal efficiency, and reduced friction. Features include an elliptical design for even load distribution, engineered heat dissipation, and precision manufacturing. Specifications: Bore size 66.40 mm, actual piston size 66.35 mm, Display (cm³) 249, Stroke (mm) 68.00, Clearance (mm) 0.05, Compression ratio 2-stroke (Wossner and OEM), Compression height (mm) 38.00. Includes piston Wossner PN# 8217DA, gasket PN# D2041, lock PN# CW18, pin PN# WP033, ring set PN# RSB6640, and rod PN# P2028. Old OEM part number: 56-W056.WO.A. Weight 316 grams.","descriptionMarkdown":"### Wossner 66.40mm Single-Ring Piston Kit\n\nEnhance the performance and durability of your two-stroke engine with this high-quality Wossner piston kit. Engineered for precision and built to last, this kit features a forged single-ring piston designed to minimize friction and optimize power delivery. Manufactured in Germany, Wossner pistons are renowned for their superior thermal efficiency and robust construction, ensuring reliable performance even under demanding conditions.\n\nThe advanced elliptical design of the piston helps distribute load evenly, preventing localized pressure points and the risk of piston collapse. This results in a more stable and consistent operation of your engine. This kit includes all necessary components for a complete installation.\n\n#### Key Features:\n\n \n- Forged single-ring piston design for reduced friction and improved engine response.\n \n- Engineered for efficient heat dissipation to cylinder walls, promoting cooler operation.\n \n- Elliptical piston shape for even load distribution, preventing localized pressure and potential piston failure.\n \n- Precision manufactured in Germany for exceptional reliability and consistent quality.\n \n- Designed for high-performance two-stroke applications.\n\n#### Specifications:\n\n \n- Bore Size: 66.40 mm\n \n- Actual Piston Size: 66.35 mm\n \n- Display (cm³): 249\n \n- Stroke (mm): 68.00\n \n- Clearance (mm): 0.05\n \n- Compression Ratio: 2-stroke (Wossner and OEM)\n \n- Compression Height (mm): 38.00\n\n#### Included Components:\n\n \n- Piston: Wossner PN# 8217DA (Single ring)\n \n- Gasket: PN# D2041\n \n- Lock: PN# CW18\n \n- Pin: PN# WP033\n \n- Ring Set: PN# RSB6640\n \n- Rod: PN# P2028","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-yz250-1-ring-wossner-8217da-6640-a","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/3cf7d0ca5292:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/3cf7d0ca5292:1"}},"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."]}}