{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"1c920e4fc000","name":"PISTON KIT 98-01 YZ125 54.00 A, WOSSNER 8091DA YAMAHA MX 4XM-11631-30-A0","sku":"56-W726.A.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":115.06,"formatted":"£115.06"},"summary":"Wossner piston kit with a 54.00mm bore designed for Yamaha YZ125 and WR125 models from 1998 to 2001. Features forged piston construction for high strength and durability, optimized heat transfer, and an elliptical shape for enhanced load distribution. Manufactured in Germany. Specifications include a 54.00 mm bore size, 53.95 mm actual piston size, 125 cm³ displacement, 54.50 mm stroke, 0.05 mm clearance, 2-stroke compression ratio, 28.00 mm compression height. Cross-reference OEM part numbers: 4XM-11631-30-A0, 09104819, 726M05400. Included components: Piston (Wossner PN# 8091DA), Lock (PN# CW15), Pin (PN# WP032), Ring Set (PN# RSB5400), Rod (PN# P2019). Weight: 182g.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"54.00mm"},{"label":"Variant Id","value":"257552"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W726_2EA_2EWO/ec12830a676472fb.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W726_2EA_2EWO/ec12830a676472fb.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W726_2EA_2EWO/408f70f82ab934d1.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W726_2EA_2EWO/67287a8e9eb17b83.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W726_2EA_2EWO/3b67495be8e942f5.jpg"],"description":"Wossner piston kit with a 54.00mm bore designed for Yamaha YZ125 and WR125 models from 1998 to 2001. Features forged piston construction for high strength and durability, optimized heat transfer, and an elliptical shape for enhanced load distribution. Manufactured in Germany. Specifications include a 54.00 mm bore size, 53.95 mm actual piston size, 125 cm³ displacement, 54.50 mm stroke, 0.05 mm clearance, 2-stroke compression ratio, 28.00 mm compression height. Cross-reference OEM part numbers: 4XM-11631-30-A0, 09104819, 726M05400. Included components: Piston (Wossner PN# 8091DA), Lock (PN# CW15), Pin (PN# WP032), Ring Set (PN# RSB5400), Rod (PN# P2019). Weight: 182g.","descriptionMarkdown":"### Wossner Piston Kit 54.00mm Bore for Yamaha YZ125 / WR125 (1998-2001)\n\nEnhance your motorcycle's performance with this precision-engineered Wossner Piston Kit. Designed for durability and power, this kit features a forged piston constructed in Germany, ensuring exceptional strength and reliability for demanding two-stroke applications.\n\n**Key Features:**\n\n\t\n- Forged piston construction for superior strength and longevity.\n\t\n- Optimized for efficient heat transfer from the combustion chamber to the cylinder wall, promoting consistent performance.\n\t\n- Elliptical piston shape designed to improve load distribution and mitigate risks of piston collapse due to heat expansion.\n\t\n- Manufactured to exacting standards in Germany, guaranteeing high-quality craftsmanship.\n\n**Specifications:**\n\n\t\n- Bore Size: 54.00 mm\n\t\n- Actual Piston Size: 53.95 mm\n\t\n- Displacement (cm³): 125\n\t\n- Stroke (mm): 54.50\n\t\n- Clearance (mm): 0.05\n\t\n- Compression Ratio: 2-stroke (Wossner and OEM compatible)\n\t\n- Compression Height (mm): 28.00\n\n**Cross-Reference OEM Part Numbers:**\n\n\t\n- 4XM-11631-30-A0\n\t\n- 09104819\n\t\n- 726M05400\n\n**Included Components:**\n\n\t\n- Piston: Wossner PN# 8091DA\n\t\n- Lock: PN# CW15\n\t\n- Pin: PN# WP032\n\t\n- Ring Set: PN# RSB5400\n\t\n- Rod: PN# P2019","weightGrams":null,"fitments":[{"make":"GAS-GAS","model":"MC 125","cc":null,"notes":null,"years":"2000–2001"},{"make":"GAS-GAS","model":"MX 125","cc":null,"notes":null,"years":"2000–2001"},{"make":"GASGAS","model":"EC 125","cc":null,"notes":null,"years":"2000–2001"},{"make":"YAMAHA","model":"YZ 125","cc":null,"notes":null,"years":"1996–2001"}],"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-98-01-yz125-5400-a-wossner-8091da-yamaha-mx-4xm-11631-30-a0","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/1c920e4fc000:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/1c920e4fc000:1"}},"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."]}}