{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"30d3c628260b","name":"PISTON KIT 2014 YZF250 77.0 HC, FORGED WOSSNER 8894DA, 1SM-11631-01-00","sku":"56-W4962.A.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 8894DA features a standard 77.00mm bore with an actual piston size of 76.95mm and a compression height of 20.20mm. This high-compression piston offers increased compression over OEM specifications (13.70:1 vs 13.50:1) and is designed for optimal combustion heat transfer. Its elliptical profile ensures uniform expansion and balanced thrust load distribution, contributing to superior strength and durability. Manufactured in Germany, this piston is a direct OEM replacement with a dome volume of -3.00cm³. Specifications include a bore size of 77.00mm, actual piston size of 76.95mm, displacement of 249cm³, stroke of 53.60mm, clearance of 0.05mm, and a Wossner compression ratio of 13.70:1. Cross-reference OEM part numbers include 1SM-11631-01-00, CW16, WP087, and 770XAS-2.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"77mm"},{"label":"Variant Id","value":"256485"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4962_2EA_2EWO/e5e7a6cb582924d2.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4962_2EA_2EWO/e5e7a6cb582924d2.jpg"],"description":"Wossner forged piston kit 8894DA features a standard 77.00mm bore with an actual piston size of 76.95mm and a compression height of 20.20mm. This high-compression piston offers increased compression over OEM specifications (13.70:1 vs 13.50:1) and is designed for optimal combustion heat transfer. Its elliptical profile ensures uniform expansion and balanced thrust load distribution, contributing to superior strength and durability. Manufactured in Germany, this piston is a direct OEM replacement with a dome volume of -3.00cm³. Specifications include a bore size of 77.00mm, actual piston size of 76.95mm, displacement of 249cm³, stroke of 53.60mm, clearance of 0.05mm, and a Wossner compression ratio of 13.70:1. Cross-reference OEM part numbers include 1SM-11631-01-00, CW16, WP087, and 770XAS-2.","descriptionMarkdown":"### Wossner Forged Piston Kit 77.00mm High Compression\n\nEnhance your motorcycle's performance with this Wossner forged piston kit. Engineered in Germany, this high-compression piston is designed to deliver increased power and superior durability for your 249cc engine. Its advanced construction and design ensure optimal combustion and reliable performance.\n\n#### Key Features\n\n\t\n- Forged Construction: Provides exceptional strength and longevity for demanding use.\n\t\n- High Compression Design: Boosts engine performance by increasing the compression ratio over OEM specifications.\n\t\n- Elliptical Profile: Ensures uniform piston expansion and balanced thrust load distribution, reducing stress.\n\t\n- Optimized Heat Transfer: Designed for efficient management of combustion heat, contributing to engine longevity.\n\t\n- Precision Manufacturing: Made in Germany to exacting standards for a perfect fit and reliable operation.\n\t\n- Direct Replacement: Intended for straightforward installation as an OEM part alternative.\n\n#### Specifications\n\n\t\n- Bore Size: 77.00mm\n\t\n- Actual Piston Size: 76.95mm\n\t\n- Displacement: 249cm&sup3;\n\t\n- Stroke: 53.60mm\n\t\n- Clearance: 0.05mm\n\t\n- Dome Volume: -3.00cm&sup3;\n\t\n- Wossner Compression Ratio: 13.70:1\n\t\n- OEM Compression Ratio: 13.50:1\n\t\n- Compression Height: 20.20mm\n\n#### Cross-Reference OEM Part Numbers\n\n\t\n- 1SM-11631-01-00\n\t\n- CW16 (Lock)\n\t\n- WP087 (Pin)\n\t\n- 770XAS-2 (Ring Set)","weightGrams":null,"fitments":[{"make":"YAMAHA","model":"WRF 250","cc":null,"notes":null,"years":"2015–2017"},{"make":"YAMAHA","model":"YZF 250","cc":null,"notes":null,"years":"2014–2015"}],"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-2014-yzf250-770-hc-forged-wossner-8894da-1sm-11631-01-00","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/30d3c628260b:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/30d3c628260b: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."]}}