{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"0f9a666b4f60","name":"TOP END PISTON & GASKET KIT 77MM YAMAHA WR/YZ 250 08-13, ATHENA P5F0770039007B, SET B","sku":"56-T1003.B_ATH","brand":"Athena","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":224.71,"formatted":"£224.71"},"summary":"Athena Top End Piston Kit includes a forged 4-stroke piston with a bore diameter of 76.97mm and a top end gasket kit. The pistons are made from a special high-performance aluminum alloy with a high silicon content and are produced using state-of-the-art CNC machines. Some pistons feature a molybdenum disulfide coating on the skirts to reduce friction. The included piston rings are made in Japan with wear-resistant coatings (PVD or chromium nitride) for increased durability. The gasket kits are developed with extensive experience and utilize advanced technology for reliable sealing. Technical features include: Big End Pin Diameter (mm) 16x10x42, Bore Diameter (mm) 76.97, Compression Height (mm) 22.30, Compression Ratio 13.5:1, Displacement (cc) 250, Number Of Segments 3, Piston Pin Type Standard, Piston Type Forged. All Athena products produced in greater displacement and power than those provided by the road code of the user's country are intended exclusively for competitive use. Athena declines all responsibility for any use of the product contrary to national regulations. Guarantee of compliance should not be applicable to products destined for competitive sports use or which are used in high-performance or high-speed applications unless it is a clear case of faultiness.","attributes":[{"label":"Variant Id","value":"309782"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-T1003_2EB_5FATH/3c1292c3fb8c761b.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-T1003_2EB_5FATH/3c1292c3fb8c761b.jpg"],"description":"Athena Top End Piston Kit includes a forged 4-stroke piston with a bore diameter of 76.97mm and a top end gasket kit. The pistons are made from a special high-performance aluminum alloy with a high silicon content and are produced using state-of-the-art CNC machines. Some pistons feature a molybdenum disulfide coating on the skirts to reduce friction. The included piston rings are made in Japan with wear-resistant coatings (PVD or chromium nitride) for increased durability. The gasket kits are developed with extensive experience and utilize advanced technology for reliable sealing. Technical features include: Big End Pin Diameter (mm) 16x10x42, Bore Diameter (mm) 76.97, Compression Height (mm) 22.30, Compression Ratio 13.5:1, Displacement (cc) 250, Number Of Segments 3, Piston Pin Type Standard, Piston Type Forged. All Athena products produced in greater displacement and power than those provided by the road code of the user's country are intended exclusively for competitive use. Athena declines all responsibility for any use of the product contrary to national regulations. Guarantee of compliance should not be applicable to products destined for competitive sports use or which are used in high-performance or high-speed applications unless it is a clear case of faultiness.","descriptionMarkdown":"### Athena Top End Piston and Gasket Kit - Forged 4-Stroke Piston 77mm\n\n This Athena Top End Piston Kit provides a perfect combination of two essential engine components for optimal performance and reliability. It includes a forged 4-stroke piston and a comprehensive top-end gasket kit, engineered to work seamlessly together. Athena develops and tests all piston technologies and materials internally, alongside engineering compatible gaskets, ensuring a perfectly tuned kit for high performance and maximum durability.\n\n#### Key Features:\n\n \n- Forged Piston Construction: Made from a special high-performance aluminum alloy with a high silicon content for enhanced reliability, resistance, and performance, comparable to Original Equipment (OE) pistons.\n \n- Advanced Manufacturing: Pistons are produced using state-of-the-art numerical control (CNC) machines.\n \n- Reduced Friction: Some piston skirts feature a molybdenum disulfide coating applied by screen printing to further reduce friction, enhancing performance and durability.\n \n- High-Quality Piston Rings: Included piston rings are manufactured in Japan and feature wear-resistant coatings (PVD or chromium nitride) to increase retention and durability, leading to less friction with the cylinder.\n \n- Reliable Gasket Kit: Athena gasket kits are built upon extensive industry experience and constant technological development, adhering to strict manufacturer parameters.\n \n- Precision Sealing: Utilizes the latest generation lasers for perfect cutting quality in gasket production.\n \n- Material Treatments: Employs surface treatments to compensate for irregularities and material stress-relieving processes to improve sealing in critical areas.\n \n- Smooth Profile: The piston's smooth profile ensures regular flow and perfect flame propagation.\n\n#### Technical Specifications:\n\n \n- Big End Pin Diameter (mm): 16x10x42\n \n- Bore Diameter (mm): 76.97\n \n- Compression Height (mm): 22.30\n \n- Compression Ratio: 13.5:1\n \n- Displacement (cc): 250\n \n- Number Of Segments: 3\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-250-08-13-athena-p5f0770039007b-set-b","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/0f9a666b4f60:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/0f9a666b4f60:1"}},"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."]}}