{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"63ae438eda98","name":"PISTON KIT 05-21 YZ125 54.0 GP, WISECO 846M05400 FORGED, Racers Choice, GP Series","sku":"56-W845.WI.GP","brand":"Wiseco","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":177.97,"formatted":"£177.97"},"summary":"Wiseco GP Series Piston Kit 54.0mm. This piston assembly is designed to withstand the demands of the Grand Prix circuit. It features thicker domes than the standard Pro-Lite, is pinned on the centerline, and has no intake window. No engine modification is required. Included items: One 54.0mm piston, one 2126CS ring, two CW15 circlips, and one S668 wrist pin.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"54.00mm"},{"label":"Variant Id","value":"258024"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W845_2EWI_2EGP/9a0a19f850ed9d70.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W845_2EWI_2EGP/9a0a19f850ed9d70.jpg"],"description":"Wiseco GP Series Piston Kit 54.0mm. This piston assembly is designed to withstand the demands of the Grand Prix circuit. It features thicker domes than the standard Pro-Lite, is pinned on the centerline, and has no intake window. No engine modification is required. Included items: One 54.0mm piston, one 2126CS ring, two CW15 circlips, and one S668 wrist pin.","descriptionMarkdown":"### Wiseco GP Series Piston Kit\n\n**Engineered for peak performance,** this Wiseco GP Series Piston Kit is designed to meet the rigorous demands of racing. Constructed with a forged design, these pistons offer superior strength and durability. The GP Series features thicker domes compared to standard Pro-Lite pistons, providing enhanced resilience under extreme conditions. They are pinned on the centerline and do not include an intake window, optimizing combustion and performance.\n\nThis piston assembly requires no engine modification for installation, ensuring a straightforward upgrade. The kit includes all necessary components for a complete top-end rebuild.\n\n \n- Forged Construction: Provides exceptional strength and longevity.\n \n- GP Series Design: Engineered for Grand Prix level racing demands.\n \n- Thicker Domes: Offers increased resistance to heat and stress.\n \n- Centerline Pinning: Optimized for performance and durability.\n \n- No Intake Window: Focuses combustion for maximum power.\n \n- Electra Coated: Enhances durability and performance.\n \n- Direct Fit: No engine modification required.\n \n- Kit Includes: One 54.0mm piston, one 2126CS ring, two CW15 circlips, and one S668 wrist pin.","weightGrams":null,"fitments":[{"make":"FANTIC","model":"XE 125","cc":null,"notes":null,"years":"2021–2022"},{"make":"FANTIC","model":"XX 125","cc":null,"notes":null,"years":"2021"},{"make":"YAMAHA","model":"YZ 125","cc":null,"notes":null,"years":"2004–2021"},{"make":"YAMAHA","model":"YZ 125X","cc":null,"notes":null,"years":"2020–2022"}],"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-05-21-yz125-540-gp-wiseco-846m05400-forged-racers-choice-gp-series","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/63ae438eda98:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/63ae438eda98:1"}},"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."]}}