{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"985d1cda65c0","name":"PISTON KIT 99-08 TRX XR 85.00, FORGED WOSSNER 702DC 400","sku":"56-W4628.C.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":187.82,"formatted":"£187.82"},"summary":"Wossner forged piston kit with an 85.02mm 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. Specifications include a bore of 85.02mm (84.96mm 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.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"85mm"},{"label":"Variant Id","value":"255782"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock54728_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock54728_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54728_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54728_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54728_4.jpg"],"description":"Wossner forged piston kit with an 85.02mm 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. Specifications include a bore of 85.02mm (84.96mm 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.","descriptionMarkdown":"### Wossner Forged Piston Kit - 85.02mm Bore\n\n Upgrade your ATV's performance with this high-quality Wossner forged piston kit. Engineered for superior strength, heat transfer, and durability, this piston is manufactured in Germany to exacting standards. The advanced elliptical design ensures uniform bearing surface distribution, effectively reducing localized pressure and preventing piston collapse under extreme conditions. This results in enhanced engine performance and longevity.\n\n#### Key Features\n\n \n- Forged Construction: Provides exceptional strength and durability for demanding use.\n \n- Optimized Heat Transfer: Efficiently transfers heat to cylinder walls, aiding in thermal management.\n \n- Elliptical Design: Ensures uniform bearing surface distribution, even under heat expansion, preventing premature wear.\n \n- Increased Compression Ratio: Boosts engine performance with a 12.50:1 compression ratio compared to the OEM 10.00:1.\n \n- Premium Quality: Manufactured in Germany for guaranteed performance and reliability.\n\n#### Specifications\n\n \n- Bore Size: 85.02mm (84.96mm actual)\n \n- Displacement: 397 cm&sup3;\n \n- Stroke: 70.00mm\n \n- Piston Clearance: 0.06mm\n \n- Wossner Compression Ratio: 12.50:1\n \n- OEM Compression Ratio: 10.00:1\n \n- Dome Volume: +8.40 cm&sup3;\n \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-702dc-400","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/985d1cda65c0:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/985d1cda65c0:1"}},"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."]}}