{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"f46469f3ee01","name":"PISTON KIT 87-90 TRX250 66.50, WOSSNER 8189D050 HONDA ATV","sku":"56-W562.P2.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":153.68,"formatted":"£153.68"},"summary":"Wossner forged piston kit for Honda ATC250R and TRX250R models, featuring an oversize bore of 66.50 mm (+0.50 mm). This piston is crafted for high-performance 2-stroke engines and provides superior heat management and structural integrity. The elliptical piston shape helps ensure uniform expansion and reduces localised stress, improving durability during demanding operation. Manufactured in Germany to precise specifications. High-strength forged piston design. Enhanced combustion chamber heat transfer to cylinder walls. Elliptical shape for consistent bearing surface under heat expansion. Developed specifically for 2-stroke engines. Manufactured in Germany. Bore: 66.50 mm. Actual Bore Diameter: 66.44 mm. Compression Height: 33.00 mm. Display Volume: 246 cm&sup3;. Stroke: 72.00 mm. Clearance: 0.06 mm. Compression Ratio: 2-stroke (Wossner and OEM). Piston Kit Part No.: 8189D050. Lock P/N: CW18. Pin P/N: WP033. Ring Set P/N: RSB6650 (x2). Rod P/N: P2042. Alternate Part No.: 56-W562.P2.WO.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"66.5mm"},{"label":"Variant Id","value":"256860"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock55806_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock55806_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55806_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55806_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55806_4.jpg"],"description":"Wossner forged piston kit for Honda ATC250R and TRX250R models, featuring an oversize bore of 66.50 mm (+0.50 mm). This piston is crafted for high-performance 2-stroke engines and provides superior heat management and structural integrity. The elliptical piston shape helps ensure uniform expansion and reduces localised stress, improving durability during demanding operation. Manufactured in Germany to precise specifications. High-strength forged piston design. Enhanced combustion chamber heat transfer to cylinder walls. Elliptical shape for consistent bearing surface under heat expansion. Developed specifically for 2-stroke engines. Manufactured in Germany. Bore: 66.50 mm. Actual Bore Diameter: 66.44 mm. Compression Height: 33.00 mm. Display Volume: 246 cm&sup3;. Stroke: 72.00 mm. Clearance: 0.06 mm. Compression Ratio: 2-stroke (Wossner and OEM). Piston Kit Part No.: 8189D050. Lock P/N: CW18. Pin P/N: WP033. Ring Set P/N: RSB6650 (x2). Rod P/N: P2042. Alternate Part No.: 56-W562.P2.WO.","descriptionMarkdown":"### Wossner Forged Piston Kit - Enhanced Performance for Your ATV\n\nUpgrade your ATV's engine with the Wossner Forged Piston Kit, engineered for high-performance 2-stroke applications. This precision-crafted piston offers superior heat management and exceptional structural integrity, ensuring optimal performance under demanding conditions. Its advanced elliptical design promotes uniform expansion and reduces stress concentration, leading to enhanced durability and longevity.\n\n**Key Features:**\n\n \n- High-strength forged piston construction for maximum durability.\n \n- Optimized for efficient combustion chamber heat transfer to cylinder walls.\n \n- Elliptical piston shape ensures a consistent bearing surface, even with heat expansion.\n \n- Specifically developed and manufactured in Germany for 2-stroke engines.\n\n**Technical Specifications:**\n\n \n- Bore Size: 66.50 mm\n \n- Actual Bore Diameter: 66.44 mm\n \n- Compression Height: 33.00 mm\n \n- Displacement Volume: 246 cm&sup3;\n \n- Stroke: 72.00 mm\n \n- Piston Clearance: 0.06 mm\n \n- Compression Ratio: Designed for 2-stroke (Wossner and OEM compatibility)\n\n**Included Components:**\n\n \n- Piston Kit Part Number: 8189D050\n \n- Lock Ring Part Number: CW18\n \n- Piston Pin Part Number: WP033\n \n- Ring Set Part Number: RSB6650 (quantity of 2)\n \n- Connecting Rod Part Number: P2042","weightGrams":null,"fitments":[{"make":"HONDA","model":"ATC R 250","cc":null,"notes":null,"years":"1985–1986"},{"make":"HONDA","model":"CR 250R","cc":null,"notes":null,"years":"1984–1985"},{"make":"HONDA","model":"TRX 250","cc":null,"notes":null,"years":"1987–1989"},{"make":"HONDA","model":"TRX 350","cc":null,"notes":null,"years":"2000–2006"},{"make":"HONDA","model":"TRX R 250","cc":null,"notes":null,"years":"1985–1989"}],"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-87-90-trx250-6650-wossner-8189d050-honda-atv","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/f46469f3ee01:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/f46469f3ee01:1"}},"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."]}}