{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"2b6b0d188423","name":"PISTON KIT 99-08 TRX XR 85.00, FORGED WOSSNER 8702DB 400","sku":"56-W4628.B.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 85.01mm 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 a bore of 85.01mm (84.94mm actual), display of 397 cm&sup3;, 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 cm&sup3;, and Compression Height of 26.20mm. Cross-reference OEM part numbers include Wossner Piston 8702DB, Lock CW20, Pin WP052, Ring Set 850XSY, and 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":"255781"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock54727_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock54727_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54727_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54727_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54727_4.jpg"],"description":"Wossner forged piston kit with an 85.01mm 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 a bore of 85.01mm (84.94mm actual), display of 397 cm&sup3;, 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 cm&sup3;, and Compression Height of 26.20mm. Cross-reference OEM part numbers include Wossner Piston 8702DB, Lock CW20, Pin WP052, Ring Set 850XSY, and Rod P4021.","descriptionMarkdown":"### Wössner Forged Piston Kit 85.01mm for Honda TRX400\n\n\tThis Wössner forged piston kit is engineered for high-performance applications, featuring an 85.01mm bore. Manufactured in Germany, it utilizes advanced forged construction to significantly enhance strength, heat transfer, and overall durability. The piston's innovative elliptical design promotes uniform bearing surface distribution, effectively reducing localized pressure and preventing piston collapse under extreme operating conditions. This results in a noticeable increase in the engine's compression ratio for improved performance.\n\n#### Key Features:\n\n\t\n- Forged Construction: Provides superior strength and long-lasting durability.\n\t\n- Optimized Heat Transfer: Enhances efficient heat management to cylinder walls.\n\t\n- Elliptical Design: Ensures even bearing surface distribution, even under thermal expansion.\n\t\n- Increased Compression Ratio: Boosts engine performance with a 12.50:1 ratio compared to OEM 10.00:1.\n\t\n- Premium Quality: Manufactured in Germany for precision and reliability.\n\n#### Specifications:\n\n\t\n- Actual Bore: 84.94mm\n\t\n- Nominal Bore: 85.01mm\n\t\n- Displacement: 397 cm³\n\t\n- Stroke: 70.00mm\n\t\n- Piston Clearance: 0.06mm\n\t\n- Wössner Compression Ratio: 12.50:1\n\t\n- Dome Volume: +8.40 cm³\n\t\n- Compression Height: 26.20mm\n\n#### Included Components:\n\n\t\n- Wössner Piston: 8702DB\n\t\n- Lock: CW20\n\t\n- Pin: WP052\n\t\n- Ring Set: 850XSY\n\t\n- Rod: P4021","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-8702db-400","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/2b6b0d188423:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/2b6b0d188423:1"}},"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."]}}