{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"2f95a1e98895","name":"PISTON KIT 99-08 TRX XR 85.00, FORGED WOSSNER 8702DA 400","sku":"56-W4628.A.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":220.73,"formatted":"£220.73"},"summary":"Wossner forged piston kit with an 85mm 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 include 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 include bore of 85mm (84.94mm actual), displacement of 397 cm³, stroke of 70.00mm, clearance of 0.06mm, Wossner compression ratio of 12.50:1, OEM compression ratio of 10.00:1, dome volume of +8.40 cm³, and compression height of 26.20mm. Cross-reference OEM part numbers include Wossner Piston: 8702DA, Lock: CW20, Pin: WP052, Ring Set: 850XSY, Rod: P4021.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"85mm"},{"label":"Variant Id","value":"255780"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock54726_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock54726_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54726_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54726_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54726_4.jpg"],"description":"Wossner forged piston kit with an 85mm 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 include 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 include bore of 85mm (84.94mm actual), displacement of 397 cm³, stroke of 70.00mm, clearance of 0.06mm, Wossner compression ratio of 12.50:1, OEM compression ratio of 10.00:1, dome volume of +8.40 cm³, and compression height of 26.20mm. Cross-reference OEM part numbers include Wossner Piston: 8702DA, Lock: CW20, Pin: WP052, Ring Set: 850XSY, Rod: P4021.","descriptionMarkdown":"### Wossner Forged Piston Kit 85mm Bore\n\nUpgrade your ATV's performance with the Wossner Forged Piston Kit. This high-performance piston, manufactured in Germany, features an 85mm bore for enhanced engine power. Its forged construction offers superior strength, durability, and improved heat transfer to cylinder walls.\n\nThe innovative elliptical design ensures uniform bearing surface distribution, effectively reducing localized pressure and preventing piston collapse, even under extreme conditions. This kit is designed to increase the compression ratio, leading to a noticeable boost in engine performance.\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 balanced bearing surface distribution.\n\t\n- Increased compression ratio for improved power output.\n\t\n- Premium quality manufacturing from Germany.\n\n**Specifications:**\n\n\t\n- Bore: 85mm (Actual 84.94mm)\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: 12.50:1\n\t\n- OEM Compression Ratio: 10.00:1\n\t\n- Dome Volume: +8.40 cm&sup3;\n\t\n- Compression Height: 26.20mm","weightGrams":null,"fitments":[{"make":"HONDA","model":"TRX EX 400","cc":null,"notes":null,"years":"1999–2014"},{"make":"HONDA","model":"TRX X 400","cc":null,"notes":null,"years":"2009–2014"},{"make":"HONDA","model":"XR 400","cc":null,"notes":null,"years":"1996–2004"},{"make":"HONDA","model":"XR 400R","cc":null,"notes":null,"years":"1996–2004"}],"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-99-08-trx-xr-8500-forged-wossner-8702da-400","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/2f95a1e98895:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/2f95a1e98895:1"}},"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."]}}