{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"fc5008cbb2d1","name":"PISTON KIT 76-80 YZ80 50.00, FORGED WOSSNER 8183D100","sku":"56-W457+100.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":false,"stock":0,"price":{"amount":94.28,"formatted":"£94.28"},"summary":"Wossner 50mm forged piston kit 8183D100. Forged construction for superior strength and durability. Optimized heat transfer to cylinder walls. Elliptical design ensures uniform bearing surface under heat expansion. Reduces localized pressure and evenly distributes thrust loads. Prevents piston collapse under high-stress conditions. Bore Size: 50mm. Lock Part Number: CW12. Pin Part Number: WP091. Ring Set Part Number: RSB5000. Displacement: 79 cm³. Stroke: 42.00mm. Clearance: 0.05mm. Compression Ratio: 2-stroke. Compression Height: 29.50mm. Made in Germany.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"50mm"},{"label":"Variant Id","value":"255717"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W457_2B100_2EWO/481d11e816d9b3b1.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W457_2B100_2EWO/481d11e816d9b3b1.jpg"],"description":"Wossner 50mm forged piston kit 8183D100. Forged construction for superior strength and durability. Optimized heat transfer to cylinder walls. Elliptical design ensures uniform bearing surface under heat expansion. Reduces localized pressure and evenly distributes thrust loads. Prevents piston collapse under high-stress conditions. Bore Size: 50mm. Lock Part Number: CW12. Pin Part Number: WP091. Ring Set Part Number: RSB5000. Displacement: 79 cm³. Stroke: 42.00mm. Clearance: 0.05mm. Compression Ratio: 2-stroke. Compression Height: 29.50mm. Made in Germany.","descriptionMarkdown":"### Wossner 76-80 YZ80 50.00mm Forged Piston Kit\n\nEnhance your motorcycle's performance with this high-quality forged piston kit from Wossner. Specifically engineered for Yamaha YZ80 models from 1976 to 1980, this piston kit is designed in Germany to deliver superior strength, durability, and optimal engine operation.\n\nThe advanced forged construction provides exceptional resistance to stress and wear, ensuring longevity even under demanding conditions. Wossner pistons feature an optimized design for efficient heat transfer to the cylinder walls, promoting uniform temperature distribution and preventing localized hot spots. The elliptical shape of the piston ensures a consistent bearing surface, even as the piston expands with heat, which helps to reduce pressure and evenly distribute thrust loads. This meticulous engineering actively prevents piston collapse, a common failure point in high-performance engines.\n\n**Key Features:**\n\n\t\n- Forged Construction: Offers unparalleled strength and durability over cast pistons.\n\t\n- Optimized Heat Transfer: Promotes efficient cooling and reduces thermal stress.\n\t\n- Elliptical Design: Guarantees uniform bearing surface and load distribution under heat.\n\t\n- Reduced Localized Pressure: Prevents hot spots and uneven wear.\n\t\n- Prevents Piston Collapse: Engineered to withstand extreme operating conditions.\n\t\n- German Engineering: Manufactured to the highest standards for reliability and performance.\n\n**Specifications:**\n\n\t\n- Bore Size: 50.00mm\n\t\n- Wossner Part Number: 8183D100\n\t\n- Lock Ring Part Number: CW12\n\t\n- Piston Pin Part Number: WP091\n\t\n- Ring Set Part Number: RSB5000\n\t\n- Displacement: 79 cm&sup3;\n\t\n- Stroke: 42.00mm\n\t\n- Piston Clearance: 0.05mm\n\t\n- Compression Height: 29.50mm\n\t\n- Compression Ratio: 2-stroke","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-76-80-yz80-5000-forged-wossner-8183d100","buyOneNow":null,"basketWithThis":null}},"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."]}}