{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"546627126cb5","name":"PISTON KIT 87-90 TRX250 66.00, WOSSNER 8189DA HONDA ATV","sku":"56-W562.P0.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 a standard bore size of 66.00 mm. This piston is engineered for high-performance 2-stroke engine applications and designed to withstand thermal and mechanical stress. Its elliptical design provides even expansion, reducing localised pressure and enhancing durability. Manufactured in Germany with high-precision standards. Features include forged piston construction for enhanced strength and reliability, improved heat transfer from the combustion chamber to the cylinder wall, an elliptical profile for even bearing contact during thermal expansion, and an engine-specific design for 2-stroke engines. Made in Germany. Specifications: Bore 66.00 mm, Actual Bore Diameter 65.94 mm, Compression Height 45.00 mm, Display Volume 246 cm&sup3;, Stroke 86.00 mm, Clearance 0.09 mm, Compression Ratio 2-stroke (Wossner and OEM). Cross-reference OEM Part Numbers: Piston Kit Part No. 8189DA, Lock P/N CW18, Pin P/N WP033, Ring Set P/N RSB6600 (x2), Alternate Part No. 56-W562.P0.WO. Weight 314 grams.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"66.0mm"},{"label":"Variant Id","value":"256858"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W562_2EP0_2EWO/4d953fce68803328.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W562_2EP0_2EWO/4d953fce68803328.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W562_2EP0_2EWO/f88cd2283ffea796.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W562_2EP0_2EWO/23e0b2312013b5ae.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W562_2EP0_2EWO/b324cbb9afaf1c22.jpg"],"description":"Wossner forged piston kit for Honda ATC250R and TRX250R models, featuring a standard bore size of 66.00 mm. This piston is engineered for high-performance 2-stroke engine applications and designed to withstand thermal and mechanical stress. Its elliptical design provides even expansion, reducing localised pressure and enhancing durability. Manufactured in Germany with high-precision standards. Features include forged piston construction for enhanced strength and reliability, improved heat transfer from the combustion chamber to the cylinder wall, an elliptical profile for even bearing contact during thermal expansion, and an engine-specific design for 2-stroke engines. Made in Germany. Specifications: Bore 66.00 mm, Actual Bore Diameter 65.94 mm, Compression Height 45.00 mm, Display Volume 246 cm&sup3;, Stroke 86.00 mm, Clearance 0.09 mm, Compression Ratio 2-stroke (Wossner and OEM). Cross-reference OEM Part Numbers: Piston Kit Part No. 8189DA, Lock P/N CW18, Pin P/N WP033, Ring Set P/N RSB6600 (x2), Alternate Part No. 56-W562.P0.WO. Weight 314 grams.","descriptionMarkdown":"### Wossner Forged Piston Kit - High Performance for 2-Stroke Engines\n\nEnhance the performance and durability of your 2-stroke engine with this premium forged piston kit from Wossner. Engineered for high-stress applications, this piston is designed to withstand extreme thermal and mechanical loads, ensuring reliable operation and optimal power output. Manufactured in Germany to exacting precision standards, Wossner pistons are a testament to quality and innovation in engine componentry.\n\nThe unique elliptical design of this piston facilitates even expansion, effectively reducing localized pressure points and contributing to extended component life. Its construction promotes superior heat transfer from the combustion chamber to the cylinder wall, aiding in thermal management and preventing pre-ignition or detonation.\n\n#### Key Features:\n\n \n- Forged piston construction for superior strength and resilience.\n \n- Optimized for improved heat transfer, crucial for 2-stroke engine performance.\n \n- Elliptical piston profile ensures even bearing contact during thermal expansion.\n \n- Specifically engineered for demanding 2-stroke engine applications.\n \n- Proudly manufactured in Germany for exceptional quality assurance.\n\n#### Specifications:\n\n \n- Bore Size: 66.00 mm\n \n- Actual Bore Diameter: 65.94 mm\n \n- Compression Height: 45.00 mm\n \n- Displacement Volume: 246 cm&sup3;\n \n- Stroke: 86.00 mm\n \n- Clearance: 0.09 mm\n \n- Compression Ratio: Compatible with both Wossner and OEM specifications for 2-stroke engines.\n\n#### Included Components:\n\n \n- Piston Kit Part Number: 8189DA\n \n- Lock Ring Part Number: CW18\n \n- Piston Pin Part Number: WP033\n \n- Ring Set Part Number: RSB6600 (includes two rings)","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-trx250-6600-wossner-8189da-honda-atv","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/546627126cb5:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/546627126cb5:1"}},"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."]}}