{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"1ae7f42ab91b","name":"PISTON KIT 88-91 YZ250 68.50, WOSSNER 8134D050 YAMAHA MX","sku":"56-W605+050.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":160.6,"formatted":"£160.60"},"summary":"Wossner forged piston kit with 68.50mm bore and 68.44mm piston diameter. This 2-stroke piston is designed for improved strength and thermal efficiency, featuring a forged aluminium construction and elliptical geometry for even load distribution and effective heat transfer. Manufactured in Germany. Specifications include bore size 68.50 mm, piston diameter 68.44 mm, engine displacement 246 cm³, stroke 68.00 mm, clearance 0.06 mm, compression height 36.00 mm, and a 2-stroke compression ratio. Wossner part number 8134D050.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"68.50mm"},{"label":"Variant Id","value":"257075"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W605_2B050_2EWO/12378d2390e68827.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W605_2B050_2EWO/12378d2390e68827.jpg"],"description":"Wossner forged piston kit with 68.50mm bore and 68.44mm piston diameter. This 2-stroke piston is designed for improved strength and thermal efficiency, featuring a forged aluminium construction and elliptical geometry for even load distribution and effective heat transfer. Manufactured in Germany. Specifications include bore size 68.50 mm, piston diameter 68.44 mm, engine displacement 246 cm³, stroke 68.00 mm, clearance 0.06 mm, compression height 36.00 mm, and a 2-stroke compression ratio. Wossner part number 8134D050.","descriptionMarkdown":"### Wossner Forged Piston Kit 68.50mm Bore for Yamaha YZ250/WR250 (1988-1991)\n\n Upgrade your 1988-1991 Yamaha YZ250 or WR250 engine with this high-performance Wossner forged piston kit. Engineered for 2-stroke applications, this piston boasts a 68.50 mm bore size and a 68.44 mm piston diameter, representing a +0.50 mm oversize for enhanced performance and reliability.\n\n Wossner pistons are manufactured in Germany using advanced forging techniques. This process creates a stronger, more durable piston that can withstand higher temperatures and pressures compared to cast pistons. The forged construction, combined with an optimized elliptical design, ensures even load distribution and efficient heat transfer away from the combustion chamber. This leads to reduced wear, a lower risk of piston failure, and improved thermal efficiency for your engine.\n\n### Key Features:\n\n \n- Forged Construction: Provides superior strength and durability for demanding conditions.\n \n- Optimized Thermal Efficiency: Designed to effectively transfer heat away from the combustion chamber.\n \n- Elliptical Piston Geometry: Promotes balanced load distribution, accommodating thermal expansion smoothly.\n \n- Precision Engineered: Manufactured to exacting standards in Germany for dependable performance.\n \n- Oversize Bore: 68.50 mm bore with a 68.44 mm piston diameter (+0.50 mm oversize).\n\n### Specifications:\n\n \n- Bore Size: 68.50 mm\n \n- Piston Diameter: 68.44 mm\n \n- Engine Displacement: 246 cm&sup3;\n \n- Stroke: 68.00 mm\n \n- Clearance: 0.06 mm\n \n- Compression Height: 36.00 mm\n \n- Compression Ratio: 2-stroke (Compatible with Wossner and OEM specifications)\n\n### Wossner Part Cross-Reference:\n\n \n- Piston Kit: 8134D050\n \n- Lock Ring: CW18\n \n- Wrist Pin: WP033\n \n- Ring Set: RSB68500 (x2 required)","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-88-91-yz250-6850-wossner-8134d050-yamaha-mx","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/1ae7f42ab91b:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/1ae7f42ab91b: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."]}}