{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"3fdabeef6b4d","name":"PISTON KIT 83-87 YZ250 70.00, WOSSNER 8133D200 YAMAHA MX","sku":"56-W560+200.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":false,"stock":0,"price":{"amount":159.11,"formatted":"£159.11"},"summary":"Wossner forged piston kit for Yamaha YZ250 models from 1983 to 1987, featuring a 70.00 mm bore for performance applications requiring a +2.00 mm oversize. The piston is designed to optimise combustion efficiency and mechanical reliability. With an elliptical profile and advanced forging, it ensures uniform stress distribution, effective heat transfer, and reduced risk of piston deformation under high thermal loads. Precision-engineered and made in Germany. Features forged piston construction for enhanced strength and reliability. Engineered for efficient heat transfer from combustion chamber to cylinder wall. Elliptical design for balanced load distribution and minimised thermal stress. Suitable for 2-stroke engine applications. Manufactured in Germany. Specifications include a 70.00 mm bore, 69.94 mm actual bore diameter, 36.00 mm compression height, 246 cm&sup3; display volume, 68.00 mm stroke, 0.06 mm clearance, and a 2-stroke compression ratio. Cross-reference OEM part numbers include piston kit part no. 8133D200, lock p/n CW18, pin p/n WP033, ring set p/n RSB7000 (x2), rod p/n P2048, and alternate part no. 56-W560+200.WO.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"70mm"},{"label":"Variant Id","value":"256840"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W560_2B200_2EWO/af72cf1c6c756e9a.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W560_2B200_2EWO/af72cf1c6c756e9a.jpg"],"description":"Wossner forged piston kit for Yamaha YZ250 models from 1983 to 1987, featuring a 70.00 mm bore for performance applications requiring a +2.00 mm oversize. The piston is designed to optimise combustion efficiency and mechanical reliability. With an elliptical profile and advanced forging, it ensures uniform stress distribution, effective heat transfer, and reduced risk of piston deformation under high thermal loads. Precision-engineered and made in Germany. Features forged piston construction for enhanced strength and reliability. Engineered for efficient heat transfer from combustion chamber to cylinder wall. Elliptical design for balanced load distribution and minimised thermal stress. Suitable for 2-stroke engine applications. Manufactured in Germany. Specifications include a 70.00 mm bore, 69.94 mm actual bore diameter, 36.00 mm compression height, 246 cm&sup3; display volume, 68.00 mm stroke, 0.06 mm clearance, and a 2-stroke compression ratio. Cross-reference OEM part numbers include piston kit part no. 8133D200, lock p/n CW18, pin p/n WP033, ring set p/n RSB7000 (x2), rod p/n P2048, and alternate part no. 56-W560+200.WO.","descriptionMarkdown":"### Wossner 70.00mm Forged Piston Kit for Yamaha YZ250\n\n Upgrade your Yamaha YZ250 with this high-performance Wossner forged piston kit. Engineered for 1983-1987 models, this 70.00 mm bore piston offers a +2.00 mm oversize solution for enhanced power and efficiency. Its advanced forged construction and elliptical profile ensure superior strength, optimal heat transfer, and uniform stress distribution, reducing the risk of deformation under high thermal loads. Precision-made in Germany for reliability and performance.\n\n#### Key Features\n\n \n- Forged piston construction for increased strength and durability.\n \n- Designed for efficient heat transfer from the combustion chamber to the cylinder wall.\n \n- Elliptical piston profile for balanced load distribution and minimised thermal stress.\n \n- Suitable for demanding 2-stroke engine applications.\n \n- Manufactured to exacting standards in Germany.\n\n#### Specifications\n\n \n- Bore Size: 70.00 mm\n \n- Actual Bore Diameter: 69.94 mm\n \n- Compression Height: 36.00 mm\n \n- Display Volume: 246 cm&sup3;\n \n- Stroke: 68.00 mm\n \n- Clearance: 0.06 mm\n \n- Compression Ratio: Compatible with 2-stroke (Wossner and OEM)\n\n#### Included Components\n\n \n- Piston Kit Part Number: 8133D200\n \n- Lock Ring Part Number: CW18\n \n- Pin Part Number: WP033\n \n- Ring Set Part Number: RSB7000 (quantity of 2)\n \n- Rod Part Number: P2048 (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-yz250-7000-wossner-8133d200-yamaha-mx","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."]}}