{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"5d70b7771204","name":"PISTON KIT 98-01 YZ125 54.50, WOSSNER 8091D050 YAMAHA MX","sku":"56-W726_050.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":125.4,"formatted":"£125.40"},"summary":"Wossner 54.50mm bore piston kit, 0.50mm oversize, for Yamaha YZ125 and WR125 models from 1998 to 2001. Features a forged piston for superior strength and reliability, optimised heat transfer, and an elliptical design for reduced localised pressure and even thrust load distribution. Precision manufactured in Germany. Specifications include a bore size of 54.50 mm, actual piston size of 54.45 mm, displacement of 125 cm³, stroke of 54.50 mm, clearance of 0.05 mm, 2-stroke compression ratio, and compression height of 28.00 mm. Included components: Piston (Wossner PN# 8091D050), Lock (PN# CW15), Pin (PN# WP032), Ring Set (PN# RSB5450), and Rod (PN# P2019). Weight: 188 grams. Manufacturer: Wossner.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"54.5mm"},{"label":"Variant Id","value":"257559"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W726_5F050_2EWO/ec12830a676472fb.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W726_5F050_2EWO/ec12830a676472fb.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W726_5F050_2EWO/408f70f82ab934d1.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W726_5F050_2EWO/67287a8e9eb17b83.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W726_5F050_2EWO/3b67495be8e942f5.jpg"],"description":"Wossner 54.50mm bore piston kit, 0.50mm oversize, for Yamaha YZ125 and WR125 models from 1998 to 2001. Features a forged piston for superior strength and reliability, optimised heat transfer, and an elliptical design for reduced localised pressure and even thrust load distribution. Precision manufactured in Germany. Specifications include a bore size of 54.50 mm, actual piston size of 54.45 mm, displacement of 125 cm³, stroke of 54.50 mm, clearance of 0.05 mm, 2-stroke compression ratio, and compression height of 28.00 mm. Included components: Piston (Wossner PN# 8091D050), Lock (PN# CW15), Pin (PN# WP032), Ring Set (PN# RSB5450), and Rod (PN# P2019). Weight: 188 grams. Manufacturer: Wossner.","descriptionMarkdown":"### Wossner Piston Kit 54.50mm Oversize for Yamaha YZ125/WR125\n\nUpgrade your Yamaha YZ125 or WR125 engine with this high-performance Wossner forged piston kit. Precision-engineered in Germany, this kit is designed to deliver superior strength, durability, and optimal heat management for demanding two-stroke applications.\n\n#### Key Features:\n\n \n- Forged piston construction ensures exceptional strength and reliability under high stress.\n \n- Advanced design promotes efficient heat transfer from the combustion chamber to the cylinder wall, preventing overheating.\n \n- Elliptical piston shape is engineered to reduce localized pressure and evenly distribute thrust loads for smoother operation.\n \n- Manufactured with precision in Germany to exacting standards.\n\n#### Specifications:\n\n \n- Oversize Bore: 54.50 mm\n \n- Actual Piston Diameter: 54.45 mm\n \n- Engine Displacement: 125 cm&sup3;\n \n- Stroke: 54.50 mm\n \n- Piston to Cylinder Clearance: 0.05 mm\n \n- Compression Height: 28.00 mm\n \n- Compression Ratio: Compatible with 2-stroke (Wossner and OEM specifications)\n\n#### Included Components:\n\n \n- Wossner Piston (Part # 8091D050)\n \n- Piston Lock (Part # CW15)\n \n- Piston Pin (Part # WP032)\n \n- Ring Set (Part # RSB5450)\n \n- Rod (Part # P2019)","weightGrams":null,"fitments":[],"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-yz125-5450-wossner-8091d050-yamaha-mx","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/5d70b7771204:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/5d70b7771204:1"}},"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."]}}