{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"d91d5f2ec258","name":"TOP END PISTON & GASKET KIT 77MM YAMAHA WR/YZ 250 16-18, ATHENA P5F0770187009A, SET A","sku":"56-T1006.A_ATH","brand":"Athena","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":218.7,"formatted":"£218.70"},"summary":"Athena Top End Piston Kit includes a forged 4-stroke piston and top end gasket kit. The piston is made from a special high-performance aluminum alloy with high silicon content, produced with state-of-the-art numerical control (CNC) machines. Piston rings are Made in Japan with wear-resistant coatings (PVD or chromium nitride). Gasket kits are based on extensive experience and technological development, produced following strict manufacturer parameters using laser cutting. Technical features include a Big End Pin Diameter of 16x9.5x38 mm, Bore Diameter of 76.95 mm, Compression Height of 20.20 mm, Compression Ratio of 13.5:1, Displacement of 250 cc, Number Of Segments of 2, Standard Piston Pin Type, and Forged Piston Type.","attributes":[{"label":"Variant Id","value":"309790"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-T1006_2EA_5FATH/abd19bb10eefbc5c.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-T1006_2EA_5FATH/abd19bb10eefbc5c.jpg"],"description":"Athena Top End Piston Kit includes a forged 4-stroke piston and top end gasket kit. The piston is made from a special high-performance aluminum alloy with high silicon content, produced with state-of-the-art numerical control (CNC) machines. Piston rings are Made in Japan with wear-resistant coatings (PVD or chromium nitride). Gasket kits are based on extensive experience and technological development, produced following strict manufacturer parameters using laser cutting. Technical features include a Big End Pin Diameter of 16x9.5x38 mm, Bore Diameter of 76.95 mm, Compression Height of 20.20 mm, Compression Ratio of 13.5:1, Displacement of 250 cc, Number Of Segments of 2, Standard Piston Pin Type, and Forged Piston Type.","descriptionMarkdown":"### Athena Top End Piston and Gasket Kit\n\nUpgrade your motorcycle's engine performance and reliability with the Athena Top End Piston and Gasket Kit. This comprehensive kit combines a high-performance forged piston with a perfectly matched top-end gasket set, designed for optimal engine operation.\n\n#### Key Features:\n\n \n- Forged 4-Stroke Piston: Constructed from a special high-performance aluminum alloy with a high silicon content, this piston offers enhanced durability and excellent performance, comparable to Original Equipment (OE) standards.\n \n- Advanced Manufacturing: Produced using state-of-the-art numerical control (CNC) machines with reverse extrusion technology for precision and quality.\n \n- Optimized Piston Skirt Treatment: Some piston skirts feature a molybdenum disulfide coating applied by screen printing to significantly reduce friction, boosting performance and extending engine life.\n \n- High-Quality Piston Rings: Includes two piston rings made in Japan, featuring wear-resistant coatings (PVD or chromium nitride) for reduced cylinder friction and increased durability.\n \n- Reliable Gasket Set: Developed with over 40 years of industry experience, Athena gasket kits ensure maximum reliability. They are engineered by an internal team and manufactured to strict OEM parameters.\n \n- Precision Gasket Cutting: Utilizes the latest generation lasers for perfect cutting quality, ensuring a precise and secure seal.\n \n- Material Science: Employs a wide availability of raw materials, surface treatments to manage irregularities, and material stress-relieving processes for improved sealing in critical areas.\n \n- Complete Top End Solution: This kit provides a perfectly tuned combination of essential engine components for a high-performance rebuild.\n\n#### Technical Specifications:\n\n \n- Big End Pin Diameter: 16x9.5x38 mm\n \n- Bore Diameter: 76.95 mm\n \n- Compression Height: 20.20 mm\n \n- Compression Ratio: 13.5:1\n \n- Displacement: 250 cc\n \n- Number Of Segments (Piston Rings): 2\n \n- Piston Pin Type: Standard\n \n- Piston Type: Forged","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/top-end-piston-gasket-kit-77mm-yamaha-wryz-250-16-18-athena-p5f0770187009a-set-a","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/d91d5f2ec258:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/d91d5f2ec258:1"}},"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."]}}