{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"a40b07ff81f5","name":"CYLINDER FULL KIT CRF 250 R 18-24, 85MM, ATHENA P400210100067 289CC BIG BORE, (Piston included)","sku":"56-K197.85_BB.ATH","brand":"Athena","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":644.16,"formatted":"£644.16"},"summary":"Athena Big Bore Cylinder Kit, 85 mm bore diameter, 289 cc displacement. Athena has invested in cylinder aftermarket replacement parts for over ten years, with R&D in Italy using cutting-edge tools. Cylinders are coated with motor-nicksil, a nickel-silicon coating developed by Athena for smoothness and wear resistance. Athena cylinder kits are recognized worldwide for performance, durability, and reliability. This Big Bore Cylinder Kit guarantees an increase in performance along the power curve while maintaining the reliability of original components. The kit includes a high-quality aluminum cylinder with increased bore, a complete piston with pin and rings, and all necessary gaskets. All kit components are developed to withstand high temperatures, pressures, and stresses, validated by Athena technicians through rigorous bench and road tests. This cylinder kit can be installed without engine crankcase modifications. Technical features: Bore Diameter 85.00 mm, Bore Gain + 6 mm, Compression Ratio 13.7:1, Displacement 289 cc, Net Weight 1.67 Kg. Includes Piston.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Cylinder Kits"},{"label":"Variant Id","value":"290962"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K197_2E85_5FBB_2EATH/c54a9595a46feab6.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K197_2E85_5FBB_2EATH/c54a9595a46feab6.jpg"],"description":"Athena Big Bore Cylinder Kit, 85 mm bore diameter, 289 cc displacement. Athena has invested in cylinder aftermarket replacement parts for over ten years, with R&D in Italy using cutting-edge tools. Cylinders are coated with motor-nicksil, a nickel-silicon coating developed by Athena for smoothness and wear resistance. Athena cylinder kits are recognized worldwide for performance, durability, and reliability. This Big Bore Cylinder Kit guarantees an increase in performance along the power curve while maintaining the reliability of original components. The kit includes a high-quality aluminum cylinder with increased bore, a complete piston with pin and rings, and all necessary gaskets. All kit components are developed to withstand high temperatures, pressures, and stresses, validated by Athena technicians through rigorous bench and road tests. This cylinder kit can be installed without engine crankcase modifications. Technical features: Bore Diameter 85.00 mm, Bore Gain + 6 mm, Compression Ratio 13.7:1, Displacement 289 cc, Net Weight 1.67 Kg. Includes Piston.","descriptionMarkdown":"### Athena Big Bore Cylinder Kit for CRF 250 R/RX 2018-2024 (85mm, 289cc)\n\nUpgrade your motorcycle's performance with this Athena Big Bore Cylinder Kit. Engineered and designed in Italy by Athena's dedicated R&D department, this kit is built to enhance power and durability.\n\nFeaturing a precisely machined 85mm bore, this kit increases displacement to 289cc, delivering a noticeable boost in performance across the power curve while maintaining the reliability of original components. The cylinder is coated with Athena's proprietary motor-nicksil, a nickel-silicon coating known for its exceptional smoothness and resistance to wear.\n\nThis comprehensive kit includes:\n\n \n- High-quality aluminum cylinder with an increased bore diameter of 85mm.\n \n- A complete piston assembly, including the piston pin and rings.\n \n- All necessary gaskets for a complete installation.\n\nEach component has undergone rigorous testing by Athena technicians to ensure it can withstand high temperatures, pressures, and stresses, validating its performance and reliability on both the bench and the road. This big bore kit can be installed without requiring modifications to the engine crankcase.\n\n**Key Technical Features:**\n\n \n- Bore Diameter: 85.00 mm\n \n- Bore Gain: + 6 mm\n \n- Compression Ratio: 13.7:1\n \n- Displacement: 289 cc\n \n- Net Weight: 1.67 Kg","weightGrams":null,"fitments":[{"make":"HONDA","model":"CRF 250R","cc":null,"notes":null,"years":"2018–2022"},{"make":"HONDA","model":"CRF 250RX","cc":null,"notes":null,"years":"2019"}],"collections":[{"name":"Engine","url":"https://www.2brosparts.com/api/agent/collection/GB/engine"},{"name":"Cylinder Kits","url":"https://www.2brosparts.com/api/agent/collection/GB/cylinder-kits"}],"links":{"page":"https://www.2brosparts.com/products/cylinder-full-kit-crf-250-r-18-24-85mm-athena-p400210100067-289cc-big-bore-pisto","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/a40b07ff81f5:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/a40b07ff81f5:1"}},"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."]}}