{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"a4e81cb11972","name":"PISTON KIT XR400 TRX400 86.00, FORGED WOSSNER 8604D100","sku":"56-W4606+100.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":182.86,"formatted":"£182.86"},"summary":"Wossner forged piston kit with an 86mm 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, and increased compression ratio for improved engine performance. Specifications: Bore 86mm (85.94mm actual), Displacement 397 cm³, Stroke 70.00mm, Clearance 0.06mm, Wossner Compression Ratio 11.00:1, OEM Compression Ratio 10.00:1, Dome Volume +3.20 cm³, Compression Height 26.20mm. Cross-reference OEM Part Numbers: Wossner Piston 8604D100, Lock CW20, Pin WP052, Ring Set 860XSY, Rod P4021.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"86mm"},{"label":"Variant Id","value":"255771"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4606_2B100_2EWO/194560de560af9f7.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4606_2B100_2EWO/194560de560af9f7.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4606_2B100_2EWO/f05d2ec608f47479.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4606_2B100_2EWO/55ed0412b3fded22.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4606_2B100_2EWO/5a195906c9ed551a.jpg"],"description":"Wossner forged piston kit with an 86mm 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, and increased compression ratio for improved engine performance. Specifications: Bore 86mm (85.94mm actual), Displacement 397 cm³, Stroke 70.00mm, Clearance 0.06mm, Wossner Compression Ratio 11.00:1, OEM Compression Ratio 10.00:1, Dome Volume +3.20 cm³, Compression Height 26.20mm. Cross-reference OEM Part Numbers: Wossner Piston 8604D100, Lock CW20, Pin WP052, Ring Set 860XSY, Rod P4021.","descriptionMarkdown":"### Wossner 86mm Forged Piston Kit for Honda XR400 and TRX400\n\nUpgrade your motorcycle or ATV's performance with this high-quality Wossner forged piston kit. Engineered for superior strength, durability, and heat transfer, this piston is manufactured in Germany to exacting standards. The advanced elliptical design ensures uniform bearing surface distribution, even under extreme operating temperatures, minimizing localized pressure and preventing piston failure. Experience a noticeable increase in engine performance due to the enhanced compression ratio.\n\n#### Key Features:\n\n\t\n- Forged construction for exceptional strength and longevity\n\t\n- Optimized heat transfer for efficient cooling\n\t\n- Elliptical piston design for consistent bearing surface under load\n\t\n- Increased compression ratio for improved power output\n\t\n- Premium German engineering and manufacturing\n\n#### Specifications:\n\n\t\n- Bore Size: 86.00mm (85.94mm actual)\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: 8604D100\n\t\n- Lock: CW20\n\t\n- Pin: WP052\n\t\n- Ring Set: 860XSY\n\t\n- 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-trx400-8600-forged-wossner-8604d100","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/a4e81cb11972:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/a4e81cb11972:1"}},"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."]}}