{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"16e1a55c96ab","name":"PISTON KIT 99-08 TRX XR 85.50, FORGED WOSSNER 8702D050 400","sku":"56-W4628_050.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 85.50mm 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 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: Bore 85.50mm (85.44mm actual), Display 397 cm³, Stroke 70.00mm, Clearance 0.06mm, Wossner Compression Ratio 12.50:1, OEM Compression Ratio 10.00:1, Dome Volume +8.40 cm³, Compression Height 26.20mm. Cross-reference OEM part numbers: Wossner Piston 8702D050, Lock CW20, Pin WP052, Ring Set 855XSY, Rod P4021.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"85.5mm"},{"label":"Variant Id","value":"255784"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4628_5F050_2EWO/31e1a59c078820e7.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4628_5F050_2EWO/31e1a59c078820e7.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4628_5F050_2EWO/ec45b333ba6541a6.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4628_5F050_2EWO/73147bb726abab69.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4628_5F050_2EWO/e61d69049755c1d2.jpg"],"description":"Wossner forged piston kit with an 85.50mm 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 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: Bore 85.50mm (85.44mm actual), Display 397 cm³, Stroke 70.00mm, Clearance 0.06mm, Wossner Compression Ratio 12.50:1, OEM Compression Ratio 10.00:1, Dome Volume +8.40 cm³, Compression Height 26.20mm. Cross-reference OEM part numbers: Wossner Piston 8702D050, Lock CW20, Pin WP052, Ring Set 855XSY, Rod P4021.","descriptionMarkdown":"### Wossner Forged Piston Kit 85.50mm for Honda TRX400EX/X\n\nUpgrade your ATV's performance with this high-quality Wossner forged piston kit. Engineered for exceptional strength, durability, and heat transfer, this piston is manufactured in Germany to meet stringent quality standards. The advanced elliptical design ensures uniform bearing surface distribution under extreme conditions, reducing localized pressure and preventing piston collapse. Experience enhanced engine power and longevity with this premium upgrade.\n\n### Key Features:\n\n\t\n- Forged construction for superior strength and resistance to wear.\n\t\n- Optimized for efficient heat transfer to cylinder walls, promoting cooler engine operation.\n\t\n- Elliptical piston design promotes even bearing surface distribution, even under thermal expansion.\n\t\n- Increased compression ratio for noticeable improvements in engine performance.\n\t\n- Precision manufactured in Germany.\n\n### Specifications:\n\n\t\n- Piston Bore: 85.50mm (Actual bore: 85.44mm)\n\t\n- Engine Displacement: 397 cm&sup3;\n\t\n- Stroke: 70.00mm\n\t\n- Piston to Cylinder 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\n\n### Included Components:\n\n\t\n- Wossner Piston: 8702D050\n\t\n- Lock: CW20\n\t\n- Pin: WP052\n\t\n- Ring Set: 855XSY\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-99-08-trx-xr-8550-forged-wossner-8702d050-400","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/16e1a55c96ab:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/16e1a55c96ab: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."]}}