{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"b853d899be84","name":"PISTON KIT B 54MM KAWASAKI KX 125 03-07, ATHENA S4C05400010B STD BORE, KIT B","sku":"56-K122.54_PIB","brand":"Athena","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":109.67,"formatted":"£109.67"},"summary":"ATHENA Cast Piston Kit B, 54mm bore diameter. This kit includes the piston, pin, circlips, and piston rings. Made with a special high-performance aluminum alloy with high silicon content, produced with cutting-edge CNC machining tools to ensure dimensional tolerances of less than 0.01 mm. Piston skirt is treated with a molybdenum disulfide coating to reduce friction. Piston rings are produced in Japan with wear-resistant coatings. Big End Pin Diameter: 15x10x45 mm. Compression Ratio: 14.8:1. Displacement: 125 cc. Net Weight: 0.17 Kg. Number Of Segments: 1. Piston Head Type: Flat. Piston Pin Type: Biconical. Piston Type: Melted.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"Variant Id","value":"296732"}],"image":"https://www.oro2u.com/media/catalog/product/5/6/56-k122-54_pib.jpg","images":["https://www.oro2u.com/media/catalog/product/5/6/56-k122-54_pib.jpg"],"description":"ATHENA Cast Piston Kit B, 54mm bore diameter. This kit includes the piston, pin, circlips, and piston rings. Made with a special high-performance aluminum alloy with high silicon content, produced with cutting-edge CNC machining tools to ensure dimensional tolerances of less than 0.01 mm. Piston skirt is treated with a molybdenum disulfide coating to reduce friction. Piston rings are produced in Japan with wear-resistant coatings. Big End Pin Diameter: 15x10x45 mm. Compression Ratio: 14.8:1. Displacement: 125 cc. Net Weight: 0.17 Kg. Number Of Segments: 1. Piston Head Type: Flat. Piston Pin Type: Biconical. Piston Type: Melted.","descriptionMarkdown":"### Athena Piston Kit B 54mm\n\nThis Athena Piston Kit B is engineered for optimal performance and reliability in off-road motorcycles. Crafted with a special high-performance aluminum alloy rich in silicon, these cast pistons are produced using advanced CNC machining to ensure dimensional tolerances of less than 0.01 mm. The design guarantees reliability comparable to OE pistons while offering enhanced durability and superior performance. A perfectly smooth profile promotes regular flow and ideal flame propagation. Some piston skirts feature a molybdenum disulfide coating applied via screen printing to further reduce friction, boosting both performance and longevity.\n\nAthena's commitment to quality is evident as engineers ensure advanced technical solutions and the highest standards, meeting or exceeding OE production specifications for performance and reliability. Each piston is meticulously engineered in Italy and rigorously tested on dynamometer benches and in real-world track conditions to validate its performance, even under the most demanding circumstances.\n\nThis piston kit includes the piston, pin, circlips, and piston rings. All components are designed for interchangeability. The included piston rings are manufactured in Japan with wear-resistant coatings (PVD or chromium nitride) to increase retention and durability, adapting perfectly to the cylinder liner even at low tangential load, ensuring less friction and higher performance.\n\n**Key Features:**\n\n \n- High-performance aluminum alloy with high silicon content.\n \n- Precision CNC machined for tight tolerances.\n \n- Special skirt coating on select pistons to reduce friction.\n \n- Designed for OE and Athena cylinders.\n \n- Includes piston, pin, circlips, and piston rings.\n \n- Piston rings made in Japan with advanced wear-resistant coatings.\n \n- Flat piston head type.\n \n- Biconical piston pin type.\n \n- Melted piston type.\n \n- Big End Pin Diameter: 15x10x45 mm.\n \n- Bore Diameter: 53.95 mm.\n \n- Compression Ratio: 14.8:1.\n \n- Displacement: 125 cc.\n \n- Number Of Segments: 1.\n \n- Net Weight: 0.17 Kg.","weightGrams":null,"fitments":[{"make":"KAWASAKI","model":"KX 125","cc":null,"notes":null,"years":"2003–2007"}],"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-b-54mm-kawasaki-kx-125-03-07-athena-s4c05400010b-std-bore-kit-b","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/b853d899be84:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/b853d899be84:1"}},"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."]}}