{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"d72b8391bcba","name":"PISTON KIT 77.00mm 2014-2015 YZF250 NAMURA FORGED FX-40037-C","sku":"56-W4961.C.NT","brand":"Namura Technologies","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":9,"price":{"amount":127.2,"formatted":"£127.20"},"summary":"Namura Technologies forged piston kit FX-40037-C is a complete forged piston assembly for 250cc off-road engines. It is intended for top-end servicing in standard 77mm class applications. This kit is supplied with matched rings and installation hardware. Features include a forged piston kit for off-road engine rebuilds, piston, OEM-quality piston rings, wrist pin, and circlips. Specifications include a size of 77mm, piston diameter of 77.00mm, bore size of 76.97mm, oversize of +0.02mm (Size C), and a compression ratio of 13.5:1 (high compression). Cross-reference OEM part numbers include FX-40037-C, NX-20030R, 56-W4961.C.NT, 0758891090371, and 1SM-11631-01-00.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"77mm"},{"label":"Variant Id","value":"281071"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4961_2EC_2ENT/02264c0b1bd77bc5.png","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4961_2EC_2ENT/02264c0b1bd77bc5.png"],"description":"Namura Technologies forged piston kit FX-40037-C is a complete forged piston assembly for 250cc off-road engines. It is intended for top-end servicing in standard 77mm class applications. This kit is supplied with matched rings and installation hardware. Features include a forged piston kit for off-road engine rebuilds, piston, OEM-quality piston rings, wrist pin, and circlips. Specifications include a size of 77mm, piston diameter of 77.00mm, bore size of 76.97mm, oversize of +0.02mm (Size C), and a compression ratio of 13.5:1 (high compression). Cross-reference OEM part numbers include FX-40037-C, NX-20030R, 56-W4961.C.NT, 0758891090371, and 1SM-11631-01-00.","descriptionMarkdown":"### Namura Forged Piston Kit 77.00mm\n\nThis Namura Technologies forged piston kit is designed for top-end servicing of 250cc Yamaha off-road 250F engines. It is intended for standard 77mm bore applications and provides a complete forged piston assembly. This kit is supplied with all necessary components for installation, ensuring a comprehensive rebuild solution.\n\n**Key Features:**\n\n\t\n- Forged piston kit ideal for off-road engine rebuilds\n\t\n- Includes a high-quality forged piston\n\t\n- Comes with a complete set of OEM-quality piston rings\n\t\n- Supplied with the necessary wrist pin for assembly\n\t\n- Circlips are included for secure installation\n\n**Specifications:**\n\n\t\n- Piston Diameter: 77.00mm\n\t\n- Bore Size: 76.97mm\n\t\n- Oversize: +0.02mm (Size C)\n\t\n- Compression Ratio: 13.5:1 (High Compression)\n\n**Cross-Reference Part Numbers:**\n\n\t\n- FX-40037-C\n\t\n- NX-20030R\n\t\n- \n\t\n- 1SM-11631-01-00","weightGrams":null,"fitments":[{"make":"YAMAHA","model":"WR 250F","cc":null,"notes":null,"years":"2015–2019"},{"make":"YAMAHA","model":"WRF 250","cc":null,"notes":null,"years":"2014–2018"},{"make":"YAMAHA","model":"YZ 250F","cc":null,"notes":null,"years":"2014–2018"},{"make":"YAMAHA","model":"YZ 250FX","cc":null,"notes":null,"years":"2014–2019"},{"make":"YAMAHA","model":"YZF 250","cc":null,"notes":null,"years":"2014–2015"},{"make":"YAMAHA","model":"YZF X 250","cc":null,"notes":null,"years":"2014–2019"}],"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-7700mm-2014-2015-yzf250-namura-forged-fx-40037-c","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/d72b8391bcba:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/d72b8391bcba: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."]}}