{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"a2a2f7ac230e","name":"PISTON KIT 05-07 YZF250 79mm, WOSSNER 8614D200 2-RING","sku":"56-W189+200.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":182.86,"formatted":"£182.86"},"summary":"Wossner forged piston kit with a 79.00mm bore and a three-ring design. Engineered for optimal combustion chamber heat transfer and uniform bearing surface under heat expansion, reducing localized pressure and piston collapse. Manufactured in Germany for durability and precision. Features include superior strength and design, enhanced sealing and durability, optimized heat transfer to cylinder walls, and an elliptical design for uniform bearing surface and even thrust load distribution. Specifications include a 79.00mm bore (+2.00mm oversize), standard size piston (PN# 8614D200), lock part number CW16, pin part number WP059, ring set part number 790XMS, rod part number P4005, displacement 249 cm&sup3;, stroke 53.6mm, clearance 0.04mm, Wossner compression ratio OEM, OEM compression ratio 12.50:1, dome volume -4.50 cm&sup3;, and compression height 22.20mm.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"79mm"},{"label":"Variant Id","value":"254923"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock53869_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock53869_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock53869_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock53869_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock53869_4.jpg"],"description":"Wossner forged piston kit with a 79.00mm bore and a three-ring design. Engineered for optimal combustion chamber heat transfer and uniform bearing surface under heat expansion, reducing localized pressure and piston collapse. Manufactured in Germany for durability and precision. Features include superior strength and design, enhanced sealing and durability, optimized heat transfer to cylinder walls, and an elliptical design for uniform bearing surface and even thrust load distribution. Specifications include a 79.00mm bore (+2.00mm oversize), standard size piston (PN# 8614D200), lock part number CW16, pin part number WP059, ring set part number 790XMS, rod part number P4005, displacement 249 cm&sup3;, stroke 53.6mm, clearance 0.04mm, Wossner compression ratio OEM, OEM compression ratio 12.50:1, dome volume -4.50 cm&sup3;, and compression height 22.20mm.","descriptionMarkdown":"### Wossner Forged Piston Kit 79mm 2-Ring\n\nUpgrade your motorcycle's performance with this high-quality Wossner forged piston kit. Engineered for durability and optimal performance, this piston kit features a 79.00mm bore, making it a 2.00mm oversize replacement. Manufactured in Germany, Wossner pistons are renowned for their precision engineering and superior strength.\n\nThis piston kit is designed to enhance combustion chamber heat transfer and provide a uniform bearing surface, even under extreme heat expansion. This advanced design helps to reduce localized pressure points and prevent piston collapse, ensuring consistent performance and longevity.\n\n**Key Features:**\n\n\t\n- Forged piston construction for exceptional strength and reliability.\n\t\n- Three-ring design for improved sealing and increased durability.\n\t\n- Optimized for efficient heat transfer to cylinder walls.\n\t\n- Elliptical piston design ensures a uniform bearing surface and even thrust load distribution.\n\t\n- Precision manufactured in Germany for guaranteed quality.\n\n**Specifications:**\n\n\t\n- Bore Size: 79.00mm (Oversize +2.00mm)\n\t\n- Piston Type: 2-Ring\n\t\n- Lock Part Number: CW16\n\t\n- Pin Part Number: WP059\n\t\n- Ring Set Part Number: 790XMS\n\t\n- Dome Volume: -4.50 cm&sup3;\n\t\n- Compression Height: 22.20mm\n\t\n- Stroke: 53.6mm\n\t\n- Clearance: 0.04mm\n\t\n- Compression Ratio (Wossner): OEM\n\t\n- OEM Compression Ratio: 12.50:1\n\t\n- Displacement: 249 cm&sup3;","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-05-07-yzf250-79mm-wossner-8614d200-2-ring","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/a2a2f7ac230e:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/a2a2f7ac230e: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."]}}