{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"dcf2de8aa7f3","name":"PISTON KIT 02-04 YZ125 54.00 B, WOSSNER 8072DB YAMAHA MX","sku":"56-W797.B.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":115.06,"formatted":"£115.06"},"summary":"Wossner forged piston kit with 54.01mm bore and 53.95mm piston diameter. Designed for Yamaha YZ125 2-stroke engines. Features superior strength, long-term durability, and optimal heat transfer. Elliptical profile promotes uniform bearing surface and prevents piston collapse by evenly distributing thrust loads. Manufactured in Germany. Specifications include 125 cm&sup3; displacement, 54.50mm stroke, 0.06mm clearance, 28.00mm compression height. Includes lock CW15, pin WP032, ring set RSB5400, rod P2017. Part number 56-W797.B.WO, piston part number 8072DB. Cross-references OEM part numbers 5NY-11631-01-D0, 5NY-11631-01-C0, 5NY-11631-01-B0, 5NY-11631-01-A0, ring 5NY-11611-00-00, pin 5UN-11633-00-00, circlip 93450-16068-00.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"54.0mm"},{"label":"Variant Id","value":"257775"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock56721_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock56721_1.jpg"],"description":"Wossner forged piston kit with 54.01mm bore and 53.95mm piston diameter. Designed for Yamaha YZ125 2-stroke engines. Features superior strength, long-term durability, and optimal heat transfer. Elliptical profile promotes uniform bearing surface and prevents piston collapse by evenly distributing thrust loads. Manufactured in Germany. Specifications include 125 cm&sup3; displacement, 54.50mm stroke, 0.06mm clearance, 28.00mm compression height. Includes lock CW15, pin WP032, ring set RSB5400, rod P2017. Part number 56-W797.B.WO, piston part number 8072DB. Cross-references OEM part numbers 5NY-11631-01-D0, 5NY-11631-01-C0, 5NY-11631-01-B0, 5NY-11631-01-A0, ring 5NY-11611-00-00, pin 5UN-11633-00-00, circlip 93450-16068-00.","descriptionMarkdown":"### Wossner Piston Kit - Yamaha YZ125 (2002-2004)\n\n Upgrade your Yamaha YZ125's performance with this high-quality Wossner Piston Kit. Designed for the 2002 to 2004 model years, this kit features a precision-engineered piston for optimal power and reliability.\n\n#### Key Features:\n\n \n- Forged piston construction for superior strength and long-term durability.\n \n- Engineered for optimal heat transfer from the combustion chamber to the cylinder walls.\n \n- Elliptical piston profile promotes a uniform bearing surface under thermal expansion.\n \n- Prevents piston collapse by evenly distributing thrust loads and reducing pressure points.\n \n- Manufactured in Germany for exceptional quality control.\n\n#### Specifications:\n\n \n- Bore: 54.01mm\n \n- Piston Diameter: 53.95mm\n \n- Engine Displacement: 125 cm&sup3;\n \n- Stroke: 54.50mm\n \n- Clearance: 0.06mm\n \n- Compression Height: 28.00mm\n \n- Wossner Compression Ratio: 2-stroke\n \n- OEM Compression Ratio: 2-stroke\n\n#### Included Components:\n\n \n- Lock: CW15\n \n- Pin: WP032\n \n- Ring Set: RSB5400\n \n- Rod: P2017\n \n- Piston Part Number: 8072DB","weightGrams":null,"fitments":[{"make":"YAMAHA","model":"YZ 125","cc":null,"notes":null,"years":"1997–2004"}],"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-02-04-yz125-5400-b-wossner-8072db-yamaha-mx","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/dcf2de8aa7f3:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/dcf2de8aa7f3:1"}},"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."]}}