{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"d4ffd0297f64","name":"PISTON KIT 04-06 RMZ250 77 HC, FORGED WOSSNER 8661DC","sku":"56-W306.C.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":195.02,"formatted":"£195.02"},"summary":"Wossner 56-W306.C.WO 77.02mm HC forged piston kit with a 13.5:1 compression ratio. Features optimized heat transfer and an elliptical design for uniform bearing surface distribution and even thrust load distribution to prevent piston collapse. Manufactured in Germany. Specifications include a bore size of 77.02mm (76.98mm), part number 8661DC, lock part number CW16, pin part number WP059, ring set part number 770XAS-2, rod part number P4002, displacement of 249 cm&sup3;, stroke of 53.60mm, clearance of 0.04mm, Wossner compression ratio of 13.2:1, OEM compression ratio of 12.6:1, dome volume of -4.00 cm&sup3;, and compression height of 19.60mm.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"77mm"},{"label":"Variant Id","value":"255355"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W306_2EC_2EWO/aef65b8be6a78566.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W306_2EC_2EWO/aef65b8be6a78566.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W306_2EC_2EWO/33204025b5f3f699.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W306_2EC_2EWO/2b282d09b6c784e6.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W306_2EC_2EWO/a3b0bdb23eea00e8.jpg"],"description":"Wossner 56-W306.C.WO 77.02mm HC forged piston kit with a 13.5:1 compression ratio. Features optimized heat transfer and an elliptical design for uniform bearing surface distribution and even thrust load distribution to prevent piston collapse. Manufactured in Germany. Specifications include a bore size of 77.02mm (76.98mm), part number 8661DC, lock part number CW16, pin part number WP059, ring set part number 770XAS-2, rod part number P4002, displacement of 249 cm&sup3;, stroke of 53.60mm, clearance of 0.04mm, Wossner compression ratio of 13.2:1, OEM compression ratio of 12.6:1, dome volume of -4.00 cm&sup3;, and compression height of 19.60mm.","descriptionMarkdown":"### Wossner 8661DC High Compression Forged Piston Kit\n\nEnhance your motorcycle's performance with the Wossner 8661DC High Compression Forged Piston Kit. This premium piston kit is engineered for superior strength, durability, and optimal combustion efficiency. Manufactured in Germany, Wossner pistons are known for their precision and advanced design, providing a significant upgrade over stock components.\n\nThe high-compression design helps to increase power output, while the optimized heat transfer ensures the piston operates at peak efficiency. A key feature is the elliptical design, which allows for uniform bearing surface under heat expansion, distributing thrust loads evenly. This innovative approach prevents localized pressure and reduces the risk of piston collapse, ensuring longevity and reliable performance even under demanding conditions.\n\n**Key Features:**\n\n\t\n- High-compression forged piston for increased performance.\n\t\n- Optimized heat transfer for improved engine efficiency.\n\t\n- Elliptical piston design ensures a uniform bearing surface under heat expansion.\n\t\n- Even thrust load distribution to prevent piston collapse and enhance durability.\n\t\n- Precision manufactured in Germany for exceptional quality.\n\n**Specifications:**\n\n\t\n- Bore Size: 77.02mm (nominal 76.98mm)\n\t\n- Compression Ratio: 13.5:1\n\t\n- Piston Part Number: 8661DC\n\t\n- Lock Ring Part Number: CW16\n\t\n- Wrist Pin Part Number: WP059\n\t\n- Ring Set Part Number: 770XAS-2\n\t\n- Connecting Rod Part Number: P4002\n\t\n- Engine Displacement: 249 cm&sup3;\n\t\n- Piston Stroke: 53.60mm\n\t\n- Piston Clearance: 0.04mm\n\t\n- Wossner Specified Compression Ratio: 13.2:1\n\t\n- OEM Compression Ratio: 12.6:1\n\t\n- Dome Volume: -4.00 cm&sup3;\n\t\n- Compression Height: 19.60mm","weightGrams":null,"fitments":[{"make":"SUZUKI","model":"RM-Z 250","cc":null,"notes":null,"years":"2004–2006"}],"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-04-06-rmz250-77-hc-forged-wossner-8661dc","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/d4ffd0297f64:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/d4ffd0297f64:1"}},"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."]}}