{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"5f363329e9fe","name":"PISTON KIT 10-22 RMZ250 77mm A, 8781DA WOSSNER SUZUKI 12111-49H00-0F0","sku":"56-W951.A.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":false,"stock":0,"price":{"amount":182.86,"formatted":"£182.86"},"summary":"Piston kit with 77mm bore and 76.96mm actual bore size. Wossner 8781DA (STD) piston kit. Wossner forged pistons are superior in strength and design, engineered to provide the best possible path for combustion chamber heat transfer to cylinder walls. Elliptically designed to provide a more uniform bearing surface under piston heat expansion, eliminating localized pressure and distributing thrust loads more evenly, thereby preventing piston collapse. Made in Germany. Part number 56-W951.A.WO. Lock P/N CW16, Pin P/N WP070, Ring Set P/N 770XAS-2. Display (cm3) 249, Hub stroke (mm) 53.60, Clearance (mm) 0.04, Wossner compression Ratio: 13.60:1, OEM Compression ratio: 13.20:1, Dome volume (cm3) +0.10, Compression height (mm) 29.00, Theoretical weight (G) 19.50. Cross reference numbers: 12111-49H00-0F0, 40007M07700, 12110-49820, 12111-49H10-0F0, 12140-10810, 12151-49H00, 09381-16001.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"77.00mm"},{"label":"Variant Id","value":"258344"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W951_2EA_2EWO/e966118647f5846e.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W951_2EA_2EWO/e966118647f5846e.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W951_2EA_2EWO/8802b67fb0df4968.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W951_2EA_2EWO/cef2982fc30a0d30.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W951_2EA_2EWO/ac62856101a728a9.jpg"],"description":"Piston kit with 77mm bore and 76.96mm actual bore size. Wossner 8781DA (STD) piston kit. Wossner forged pistons are superior in strength and design, engineered to provide the best possible path for combustion chamber heat transfer to cylinder walls. Elliptically designed to provide a more uniform bearing surface under piston heat expansion, eliminating localized pressure and distributing thrust loads more evenly, thereby preventing piston collapse. Made in Germany. Part number 56-W951.A.WO. Lock P/N CW16, Pin P/N WP070, Ring Set P/N 770XAS-2. Display (cm3) 249, Hub stroke (mm) 53.60, Clearance (mm) 0.04, Wossner compression Ratio: 13.60:1, OEM Compression ratio: 13.20:1, Dome volume (cm3) +0.10, Compression height (mm) 29.00, Theoretical weight (G) 19.50. Cross reference numbers: 12111-49H00-0F0, 40007M07700, 12110-49820, 12111-49H10-0F0, 12140-10810, 12151-49H00, 09381-16001.","descriptionMarkdown":"### Wossner Piston Kit - 77mm Bore\n\nThis Wossner piston kit is designed for optimal performance and durability. Featuring a 77mm bore, this kit ensures a precise fit and excellent combustion efficiency.\n\n**Key Features:**\n\n \n- Superior Forged Strength: Wossner forged pistons are engineered for exceptional strength and design, outperforming cast pistons.\n \n- Advanced Heat Transfer: Built to facilitate the best possible transfer of combustion chamber heat to cylinder walls, promoting engine longevity.\n \n- Elliptical Design: The elliptical shape ensures a uniform bearing surface even under heat expansion. This eliminates localized pressure, distributes thrust loads evenly, and prevents piston collapse.\n \n- German Engineering: Proudly made in Germany, guaranteeing high quality and precision manufacturing.\n \n- Performance Enhancement: Offers an increased compression ratio (13.60:1) compared to the OEM (13.20:1) for improved power output.\n\n**Specifications:**\n\n \n- Bore Size: 77mm\n \n- Piston Clearance: 0.04mm\n \n- Compression Height: 29.00mm\n \n- Dome Volume: +0.10 cm3\n \n- Theoretical Weight: 19.50g","weightGrams":null,"fitments":[{"make":"SUZUKI","model":"RM-Z 250","cc":null,"notes":null,"years":"2010–2025"}],"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-10-22-rmz250-77mm-a-8781da-wossner-suzuki-12111-49h00-0f0","buyOneNow":null,"basketWithThis":null}},"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."]}}