{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"4c4591a4aa60","name":"TOP END PISTON & GASKET KIT 77MM YAMAHA WR/YZ 250 16-18, ATHENA P5F0770187009B, SET B","sku":"56-T1006.B_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 for 4-stroke motorcycles. Includes a forged piston with a bore diameter of 76.96 mm and a top end gasket kit. The piston is made from a special high-performance aluminum alloy with high silicon content for reliability, resistance, and performance. Piston rings are made in Japan with wear-resistant coatings (PVD or chromium nitride) for increased durability. Gasket kits are developed with extensive experience and technology for reliability and perfect sealing. Features include Big End Pin Diameter of 16x9.5x38 mm, Compression Height of 20.20 mm, Compression Ratio of 13.5:1, Displacement of 250 cc, 2 segments, Standard Piston Pin Type, and Forged Piston Type.","attributes":[{"label":"Variant Id","value":"309791"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-T1006_2EB_5FATH/abd19bb10eefbc5c.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-T1006_2EB_5FATH/abd19bb10eefbc5c.jpg"],"description":"ATHENA Top End Piston Kit for 4-stroke motorcycles. Includes a forged piston with a bore diameter of 76.96 mm and a top end gasket kit. The piston is made from a special high-performance aluminum alloy with high silicon content for reliability, resistance, and performance. Piston rings are made in Japan with wear-resistant coatings (PVD or chromium nitride) for increased durability. Gasket kits are developed with extensive experience and technology for reliability and perfect sealing. Features include Big End Pin Diameter of 16x9.5x38 mm, Compression Height of 20.20 mm, Compression Ratio of 13.5:1, Displacement of 250 cc, 2 segments, Standard Piston Pin Type, and Forged Piston Type.","descriptionMarkdown":"### Athena Top End Piston and Gasket Kit for Yamaha WR/YZ 250\n\nThis Athena Top End Piston Kit is engineered to provide a perfect combination of essential engine components for high-performance results. Included in this set is a forged 4-stroke piston and a complementary top-end gasket kit, designed to work harmoniously for maximum reliability and performance.\n\nAthena meticulously studies, develops, and tests all piston technologies and materials internally, while also engineering the development of compatible gaskets. This precisely tuned kit ensures high performance and maximum reliability after piston replacement.\n\n#### Key Features:\n\n \n- Forged 4-Stroke Piston: Manufactured using state-of-the-art numerical control (CNC) machines from a special high-performance aluminum alloy with a high silicon content for exceptional reliability and performance.\n \n- Reduced Friction: Some pistons feature a molybdenum disulfide coating applied by screen printing to further reduce friction, enhancing performance and durability.\n \n- Advanced Piston Rings: Equipped with high-quality piston rings Made in Japan, featuring wear-resistant coatings (PVD or chromium nitride) for increased lifespan and durability.\n \n- Reliable Gasket Kit: Developed with over 40 years of industry experience, Athena gasket kits utilize solid know-how and constant technological development, produced to strict manufacturer parameters.\n \n- Precision Sealing: Latest generation lasers ensure perfect cutting quality for gaskets, with the use of advanced materials and surface treatments to improve sealing in critical areas.\n\n#### Technical Specifications:\n\n \n- Piston Bore Diameter: 76.96 mm\n \n- Compression Height: 20.20 mm\n \n- Compression Ratio: 13.5:1\n \n- Number of Piston Rings: 2\n \n- Piston Type: Forged\n \n- Piston Pin Type: Standard\n \n- Big End Pin Diameter: 16x9.5x38 mm","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/top-end-piston-gasket-kit-77mm-yamaha-wryz-250-16-18-athena-p5f0770187009b-set-b","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/4c4591a4aa60:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/4c4591a4aa60:1"}},"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."]}}