{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"0dedb7728b7b","name":"PISTON KIT XR400 TRX400 86.50, FORGED WOSSNER 8604D150","sku":"56-W4606+150.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":3,"price":{"amount":220.73,"formatted":"£220.73"},"summary":"Wossner forged piston kit with an 86.50mm bore. Manufactured in Germany, this high-performance piston enhances strength, heat transfer, and durability. The elliptical design ensures uniform bearing surface distribution, reducing localized pressure and preventing piston collapse. Features forged construction for superior strength and durability, optimized heat transfer to cylinder walls, elliptical design for uniform bearing surface under heat expansion, increased compression ratio for improved engine performance, and is made in Germany. Specifications include a bore of 86.50mm (86.44mm actual), display of 397 cm3, stroke of 70.00mm, clearance of 0.06mm, Wossner Compression Ratio of 11.00:1, OEM Compression Ratio of 10.00:1, Dome Volume of +3.20 cm3, and Compression Height of 26.20mm. Cross-reference OEM Part Numbers: Wossner Piston: 8604D150, Lock: CW20, Pin: WP052, Ring Set: 865XSY, Rod: P4021.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"86.5mm"},{"label":"Variant Id","value":"255773"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4606_2B150_2EWO/194560de560af9f7.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4606_2B150_2EWO/194560de560af9f7.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4606_2B150_2EWO/55ed0412b3fded22.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4606_2B150_2EWO/5a195906c9ed551a.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4606_2B150_2EWO/f05d2ec608f47479.jpg"],"description":"Wossner forged piston kit with an 86.50mm bore. Manufactured in Germany, this high-performance piston enhances strength, heat transfer, and durability. The elliptical design ensures uniform bearing surface distribution, reducing localized pressure and preventing piston collapse. Features forged construction for superior strength and durability, optimized heat transfer to cylinder walls, elliptical design for uniform bearing surface under heat expansion, increased compression ratio for improved engine performance, and is made in Germany. Specifications include a bore of 86.50mm (86.44mm actual), display of 397 cm3, stroke of 70.00mm, clearance of 0.06mm, Wossner Compression Ratio of 11.00:1, OEM Compression Ratio of 10.00:1, Dome Volume of +3.20 cm3, and Compression Height of 26.20mm. Cross-reference OEM Part Numbers: Wossner Piston: 8604D150, Lock: CW20, Pin: WP052, Ring Set: 865XSY, Rod: P4021.","descriptionMarkdown":"### Wossner Forged Piston Kit - 86.50mm Bore\n\nEnhance the performance and durability of your motorcycle or ATV with this Wossner forged piston kit. Engineered in Germany, this high-quality piston is designed for precision and strength.\n\n#### Key Features\n\n\t\n- Forged Construction: Provides superior strength, heat transfer, and longevity for demanding applications.\n\t\n- Elliptical Design: Ensures uniform bearing surface distribution, even under extreme heat, reducing localized pressure and preventing piston collapse.\n\t\n- Increased Compression: Offers an improved compression ratio of 11.00:1 (compared to OEM 10.00:1) for a noticeable boost in engine performance.\n\t\n- Optimized Heat Transfer: Efficiently transfers heat to cylinder walls for better thermal management.\n\t\n- German Engineering: Manufactured to high standards in Germany, guaranteeing quality and reliability.\n\n#### Specifications\n\n\t\n- Bore Size: 86.50mm (actual bore 86.44mm)\n\t\n- Displacement: 397 cm&sup3;\n\t\n- Stroke: 70.00mm\n\t\n- Piston Clearance: 0.06mm\n\t\n- Wossner Compression Ratio: 11.00:1\n\t\n- OEM Compression Ratio: 10.00:1\n\t\n- Dome Volume: +3.20 cm&sup3;\n\t\n- Compression Height: 26.20mm\n\n#### Included Components\n\n\t\n- Wossner Piston: 8604D150\n\t\n- Lock Ring: CW20\n\t\n- Piston Pin: WP052\n\t\n- Ring Set: 865XSY\n\t\n- Connecting Rod: P4021","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-xr400-trx400-8650-forged-wossner-8604d150","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/0dedb7728b7b:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/0dedb7728b7b: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."]}}