{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"e1c78782aff5","name":"PISTON KIT 85-87 YZ80 48.00, WOSSNER 8186DA YAMAHA MX 58T-11631-01-94","sku":"56-W520+000.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":83.92,"formatted":"£83.92"},"summary":"Wossner 8186DA Piston Kit 48.00mm Bore. Forged in Germany, this piston kit features a 48.00 mm bore with a 47.95 mm actual piston diameter. Designed for durability and thermal efficiency, it facilitates effective heat transfer from the combustion chamber to the cylinder walls. Its elliptical shape ensures uniform load distribution under thermal expansion, minimising localised stress and reducing the risk of piston failure. Specifications include a 45.60 mm stroke, 0.05 mm clearance, 26.80 mm compression height, 82 cm³ display, and 2-stroke compression ratios for both Wossner and OEM. Cross-reference OEM part numbers: 58T-11631-01-94, 520M04800. Wossner Piston Part Number: 8186DA. Lock Part Number: CW12. Pin Part Number: WP091. Ring Set Part Number: RSB4800. Alternate Part Number: 56-W520+000.WO.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"48mm"},{"label":"Variant Id","value":"256674"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock55620_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock55620_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55620_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55620_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55620_4.jpg"],"description":"Wossner 8186DA Piston Kit 48.00mm Bore. Forged in Germany, this piston kit features a 48.00 mm bore with a 47.95 mm actual piston diameter. Designed for durability and thermal efficiency, it facilitates effective heat transfer from the combustion chamber to the cylinder walls. Its elliptical shape ensures uniform load distribution under thermal expansion, minimising localised stress and reducing the risk of piston failure. Specifications include a 45.60 mm stroke, 0.05 mm clearance, 26.80 mm compression height, 82 cm³ display, and 2-stroke compression ratios for both Wossner and OEM. Cross-reference OEM part numbers: 58T-11631-01-94, 520M04800. Wossner Piston Part Number: 8186DA. Lock Part Number: CW12. Pin Part Number: WP091. Ring Set Part Number: RSB4800. Alternate Part Number: 56-W520+000.WO.","descriptionMarkdown":"### Wossner Piston Kit for Yamaha YZ80\n\nThis Wossner piston kit is engineered for performance and durability, featuring a 48.00 mm bore size. Precision forged in Germany, this piston is designed for enhanced strength and longevity, promoting effective heat transfer from the combustion chamber to the cylinder walls. Its innovative elliptical shape ensures uniform load distribution under thermal expansion, minimizing localized stress and reducing the risk of piston failure.\n\n### Key Features\n\n \n- Forged piston for superior strength and extended lifespan.\n \n- Optimized design for improved heat transfer from the combustion chamber.\n \n- Elliptical shape facilitates even thrust load distribution.\n \n- Manufactured with German precision.\n\n### Specifications\n\n \n- Bore size: 48.00 mm\n \n- Actual piston diameter: 47.95 mm\n \n- Displacement (cm³): 82\n \n- Stroke: 45.60 mm\n \n- Clearance: 0.05 mm\n \n- Compression height: 26.80 mm\n \n- Wossner compression ratio: 2-stroke\n \n- OEM compression ratio: 2-stroke\n\n### Cross-Reference OEM Part Numbers\n\n \n- 58T-11631-01-94\n \n- 520M04800\n \n- Wossner Piston Part Number: 8186DA\n \n- Lock Part Number: CW12\n \n- Pin Part Number: WP091\n \n- Ring Set Part Number: RSB4800\n \n- Alternate Part Number: 56-W520+","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-85-87-yz80-4800-wossner-8186da-yamaha-mx-58t-11631-01-94","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/e1c78782aff5:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/e1c78782aff5:1"}},"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."]}}