{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"595479606f2a","name":"PISTON KIT 85-86 ATC350 81.00, FORGED WOSSNER 8598DA","sku":"56-W4393+0","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":150.06,"formatted":"£150.06"},"summary":"Wossner forged piston kit with 81.00mm bore size, designed for 4-stroke engines. Manufactured in Germany, this piston features a forged construction for enhanced durability and strength, optimized heat transfer for improved performance, and an elliptical design for uniform bearing surface and reduced wear. Specifications include actual bore of 80.94mm, stroke of 68.00mm, clearance of 0.06mm, compression height of 26.70mm, dome volume of +0.60 cm&sup3;, compression ratio of 10.30:1 (OEM), and displacement of 350 cm&sup3;. Wossner Part No.: 8598DA. Includes Lock P/N: CW21, Pin P/N: WP034, and Ring Set P/N: 810XSY.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"81mm"},{"label":"Variant Id","value":"255615"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock54561_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock54561_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54561_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54561_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54561_4.jpg"],"description":"Wossner forged piston kit with 81.00mm bore size, designed for 4-stroke engines. Manufactured in Germany, this piston features a forged construction for enhanced durability and strength, optimized heat transfer for improved performance, and an elliptical design for uniform bearing surface and reduced wear. Specifications include actual bore of 80.94mm, stroke of 68.00mm, clearance of 0.06mm, compression height of 26.70mm, dome volume of +0.60 cm&sup3;, compression ratio of 10.30:1 (OEM), and displacement of 350 cm&sup3;. Wossner Part No.: 8598DA. Includes Lock P/N: CW21, Pin P/N: WP034, and Ring Set P/N: 810XSY.","descriptionMarkdown":"### Wossner Forged Piston Kit for Honda ATC350X and TRX350\n\nUpgrade your Honda ATC350X or TRX350 with this high-performance forged piston kit from Wossner. Expertly manufactured in Germany, this piston is engineered for superior strength, durability, and optimal heat transfer, translating to enhanced engine performance. The innovative elliptical design ensures even load distribution across the piston, minimizing localized pressure points and significantly reducing the risk of piston collapse. This kit is designed for 4-stroke engines.\n\n#### Key Features:\n\n\t\n- Forged Construction: Provides exceptional strength and durability for demanding applications.\n\t\n- Optimized Heat Transfer: Improves overall engine efficiency and performance.\n\t\n- Elliptical Design: Creates a uniform bearing surface, reducing wear and extending piston life.\n\t\n- German Engineering: Built to the highest standards of quality and precision.\n\n#### Specifications:\n\n\t\n- Bore Size: 81.00 mm\n\t\n- Actual Bore: 80.94 mm\n\t\n- Stroke: 68.00 mm\n\t\n- Clearance: 0.06 mm\n\t\n- Compression Height: 26.70 mm\n\t\n- Dome Volume: +0.60 cm&sup3;\n\t\n- Compression Ratio: 10.30:1 (OEM)\n\t\n- Displacement: 350 cm&sup3;\n\n**Wossner Part Number:** 8598DA\n\n**Included Components:**\n\n\t\n- Lock Piston Pin: CW21\n\t\n- Piston Pin: WP034\n\t\n- Ring Set: 810XSY","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-85-86-atc350-8100-forged-wossner-8598da","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/595479606f2a:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/595479606f2a: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."]}}