{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"b5f9a00f4c1b","name":"PISTON KIT 77-78 YZ400 87.00, WOSSNER 8264D200 YAMAHA MX, 77-78 IT400","sku":"56-W550_2.00.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":195.02,"formatted":"£195.02"},"summary":"Wossner 87mm forged piston kit designed for high durability and optimised heat transfer. Features an elliptical design for even load distribution during thermal expansion, reducing localised pressure and preventing piston collapse. Made in Germany. Specifications: Bore Size 87mm (86.92mm), Display 398 cm&sup3;, Stroke 82.00 mm, Clearance 0.08 mm, Compression Height 40.00 mm, Compression Ratio 2-stroke (Wossner and OEM). Includes Piston Kit: 8264D200, Lock: CW18, Pin: WP042, Ring Set: RSC8700 x2. Part No.: 56-W550_2.00.WO.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"87m"},{"label":"Variant Id","value":"256750"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock55696_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock55696_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55696_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55696_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55696_4.jpg"],"description":"Wossner 87mm forged piston kit designed for high durability and optimised heat transfer. Features an elliptical design for even load distribution during thermal expansion, reducing localised pressure and preventing piston collapse. Made in Germany. Specifications: Bore Size 87mm (86.92mm), Display 398 cm&sup3;, Stroke 82.00 mm, Clearance 0.08 mm, Compression Height 40.00 mm, Compression Ratio 2-stroke (Wossner and OEM). Includes Piston Kit: 8264D200, Lock: CW18, Pin: WP042, Ring Set: RSC8700 x2. Part No.: 56-W550_2.00.WO.","descriptionMarkdown":"### Wossner 87mm Piston Kit for Yamaha YZ400 and IT425\n\nThis Wossner piston kit features an 87mm bore size (86.92mm actual) and is designed for Yamaha YZ400 and IT425 models. Manufactured in Germany, this forged piston is engineered for high durability and optimised heat transfer. Its elliptical design supports even load distribution during thermal expansion, reducing localised pressure and preventing piston collapse.\n\n**Key Features:**\n\n \n- Forged construction for maximum strength.\n \n- Elliptical design distributes thrust loads evenly under expansion.\n \n- Engineered for efficient combustion chamber heat transfer.\n \n- Made in Germany.\n\n**Specifications:**\n\n \n- Bore Size: 87mm (86.92mm actual)\n \n- Stroke: 82.00 mm\n \n- Clearance: 0.08 mm\n \n- Compression Height: 40.00 mm\n \n- Compression Ratio: 2-stroke (Wossner and OEM compatible)\n\n**Kit Components:**\n\n \n- Piston\n \n- Lock: CW18\n \n- Pin: WP042\n \n- Ring Set: RSC8700 (x2)","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-77-78-yz400-8700-wossner-8264d200-yamaha-mx-77-78-it400","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/b5f9a00f4c1b:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/b5f9a00f4c1b: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."]}}