{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"4e28a68b3c84","name":"PISTON KIT 83-87 YZ250 69.50, WOSSNER 8133D150 YAMAHA MX","sku":"56-W560+150.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":4,"price":{"amount":159.11,"formatted":"£159.11"},"summary":"Wossner forged piston kit with 69.50 mm bore, designed for increased displacement and enhanced performance. This piston kit offers increased durability, efficient heat transfer, and uniform load distribution. Its elliptical profile accommodates thermal expansion, reducing stress and extending piston lifespan. Manufactured in Germany with high-precision standards. Features include a forged piston for durability, optimal combustion heat transfer, and an elliptical shape to minimise localised pressure and distribute thrust loads. Engineered for 2-stroke engines. Specifications: Bore 69.50 mm, Actual Bore Diameter 69.44 mm, Compression Height 36.00 mm, Display Volume 246 cm³, Stroke 68.00 mm, Clearance 0.06 mm, Compression Ratio 2-stroke. Cross-reference OEM Part Numbers: Piston Kit 8133D150, Lock CW18, Pin WP033, Ring Set RSB6950 (x2), Rod P2048, Alternate Part No. 56-W560+150.WO. Weight 356 grams.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"69.5mm"},{"label":"Variant Id","value":"256838"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W560_2B150_2EWO/af72cf1c6c756e9a.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W560_2B150_2EWO/af72cf1c6c756e9a.jpg"],"description":"Wossner forged piston kit with 69.50 mm bore, designed for increased displacement and enhanced performance. This piston kit offers increased durability, efficient heat transfer, and uniform load distribution. Its elliptical profile accommodates thermal expansion, reducing stress and extending piston lifespan. Manufactured in Germany with high-precision standards. Features include a forged piston for durability, optimal combustion heat transfer, and an elliptical shape to minimise localised pressure and distribute thrust loads. Engineered for 2-stroke engines. Specifications: Bore 69.50 mm, Actual Bore Diameter 69.44 mm, Compression Height 36.00 mm, Display Volume 246 cm³, Stroke 68.00 mm, Clearance 0.06 mm, Compression Ratio 2-stroke. Cross-reference OEM Part Numbers: Piston Kit 8133D150, Lock CW18, Pin WP033, Ring Set RSB6950 (x2), Rod P2048, Alternate Part No. 56-W560+150.WO. Weight 356 grams.","descriptionMarkdown":"### Wossner Forged Piston Kit for Yamaha YZ250 (1983-1987)\n\nEnhance the performance and durability of your Yamaha YZ250 with this premium forged piston kit from Wossner. Engineered for precision and built to last, this kit is designed to meet the demands of high-performance two-stroke engines.\n\n**Key Features:**\n\n\t\n- Forged construction for superior strength and longevity.\n\t\n- Optimized for efficient combustion heat transfer, promoting better engine performance.\n\t\n- Elliptical piston profile designed to minimize localized pressure and effectively distribute thrust loads.\n\t\n- Specifically engineered for two-stroke engine applications.\n\t\n- Manufactured in Germany to exacting standards.\n\n**Specifications:**\n\n\t\n- Bore: 69.50 mm\n\t\n- Actual Bore Diameter: 69.44 mm\n\t\n- Compression Height: 36.00 mm\n\t\n- Display Volume: 246 cm&sup3;\n\t\n- Stroke: 68.00 mm\n\t\n- Clearance: 0.06 mm\n\t\n- Compression Ratio: Compatible with Wossner and OEM specifications for 2-stroke engines.\n\n**Kit Components:**\n\n\t\n- Piston Kit Part Number: 8133D150\n\t\n- Lock Ring Part Number: CW18\n\t\n- Wrist Pin Part Number: WP033\n\t\n- Ring Set Part Number: RSB6950 (includes two rings)\n\t\n- Connecting Rod Part Number: P2048 (suitable for 1983-1989 models)","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-83-87-yz250-6950-wossner-8133d150-yamaha-mx","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/4e28a68b3c84:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/4e28a68b3c84:1"}},"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."]}}