{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"81f9b3a8c597","name":"PISTON KIT 81-19 PW50 40.50, WOSSNER 8267D050 YAMAHA","sku":"56-W938+050_WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":83.92,"formatted":"£83.92"},"summary":"Wossner forged piston kit 8267D050 is a +0.50mm oversize replacement for Yamaha PW50 models. Engineered with precision and manufactured in Germany, it provides enhanced strength and consistent performance for two-stroke engine applications requiring a slightly larger bore size. Features forged piston construction for superior strength and durability, elliptical design for a consistent bearing surface during heat expansion, and promotes efficient heat dissipation to cylinder walls. Prevents localised stress and piston collapse. Manufactured in Germany. Specifications: Bore Size: 40.50mm, Actual Piston Size: 40.45mm, Stroke: 39.20mm, Piston Clearance: 0.05mm, Wossner Compression Ratio: 2-stroke, OEM Compression Ratio: 2-stroke, Compression Height: 24.90mm, Lock Part Number: CW10, Pin Part Number: WP105, Ring Set Part Number: RSB4050. Cross-Reference OEM Part Numbers: Part No: 8267D050.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"40.50mm"},{"label":"Variant Id","value":"258285"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W938_2B050_5FWO/2cb96c8ea17516a6.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W938_2B050_5FWO/2cb96c8ea17516a6.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W938_2B050_5FWO/afd34083e3dc43a9.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W938_2B050_5FWO/34b3261a1db120dd.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W938_2B050_5FWO/b8e521d92cbe91b1.jpg"],"description":"Wossner forged piston kit 8267D050 is a +0.50mm oversize replacement for Yamaha PW50 models. Engineered with precision and manufactured in Germany, it provides enhanced strength and consistent performance for two-stroke engine applications requiring a slightly larger bore size. Features forged piston construction for superior strength and durability, elliptical design for a consistent bearing surface during heat expansion, and promotes efficient heat dissipation to cylinder walls. Prevents localised stress and piston collapse. Manufactured in Germany. Specifications: Bore Size: 40.50mm, Actual Piston Size: 40.45mm, Stroke: 39.20mm, Piston Clearance: 0.05mm, Wossner Compression Ratio: 2-stroke, OEM Compression Ratio: 2-stroke, Compression Height: 24.90mm, Lock Part Number: CW10, Pin Part Number: WP105, Ring Set Part Number: RSB4050. Cross-Reference OEM Part Numbers: Part No: 8267D050.","descriptionMarkdown":"### Wossner Forged Piston Kit 40.50mm Oversize\n\nThis Wossner forged piston kit offers a +0.50mm oversize replacement, specifically engineered for enhanced performance and durability in select Yamaha PW50 models. Manufactured in Germany to exacting standards, this piston is designed to provide superior strength and consistent operation, especially for two-stroke engines that require a slightly larger bore size for optimal power output.\n\n**Key Features:**\n\n \n- Forged Piston Construction: Provides exceptional strength and longevity, ensuring reliable performance under demanding conditions.\n \n- Elliptical Design: Engineered to maintain a consistent bearing surface even with heat expansion, promoting smoother operation and reducing wear.\n \n- Efficient Heat Dissipation: Designed to effectively transfer heat away from the piston to the cylinder walls, preventing overheating and maintaining optimal operating temperatures.\n \n- Prevents Stress and Collapse: The advanced design helps to avoid localized stress points and prevents piston collapse, contributing to engine longevity.\n \n- Precision Manufacturing: Proudly made in Germany, guaranteeing high quality and meticulous craftsmanship.\n\n**Specifications:**\n\n \n- Bore Size: 40.50mm\n \n- Actual Piston Size: 40.45mm\n \n- Stroke: 39.20mm\n \n- Piston Clearance: 0.05mm\n \n- Wossner Compression Ratio: 2-stroke\n \n- OEM Compression Ratio: 2-stroke\n \n- Compression Height: 24.90mm\n \n- Lock Part Number: CW10\n \n- Pin Part Number: WP105\n \n- Ring Set Part Number: RSB4050","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-81-19-pw50-4050-wossner-8267d050-yamaha","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/81f9b3a8c597:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/81f9b3a8c597:1"}},"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."]}}