{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"45e25fdddd99","name":"PISTON KIT YZF WRF 250 2-RING, WOSSNER 8713DC 08-13 77mm","sku":"56-W241+00C.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":182.4,"formatted":"£182.40"},"summary":"Wossner forged piston kit with a 77.02mm bore and 76.98mm diameter. This 2-ring piston is engineered for high performance, featuring superior strength and design. Manufactured in Germany, it ensures optimal heat transfer to cylinder walls. Its elliptical design provides a uniform bearing surface under heat expansion, reducing localized pressure and evenly distributing thrust loads to prevent piston collapse. Features forged construction for superior strength, optimized heat transfer for efficient combustion, elliptical design for uniform load distribution, 2-ring piston design for performance applications, and increased compression ratio for improved power output. Specifications include a bore of 77.02mm, diameter of 76.98mm, display of 249 cm³, stroke of 53.60mm, clearance of 0.04mm, Wossner compression ratio of 14.10:1, OEM compression ratio of 13.50:1, dome volume of -5.00 cm³, and compression height of 22.50mm. Cross-reference OEM part numbers include Wossner Piston Yamaha YZ250F (PN# 8713DC), Lock P/N CW16, Pin P/N WP059, Ring Set P/N 770XAS, and Rod P/N P4005.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"Variant Id","value":"255161"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W241_2B00C_2EWO/ba35fc6dc9e2e602.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W241_2B00C_2EWO/ba35fc6dc9e2e602.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W241_2B00C_2EWO/63df5c6b31c2af86.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W241_2B00C_2EWO/30cf69e03098de95.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W241_2B00C_2EWO/e0a14c8fcbf665f0.jpg"],"description":"Wossner forged piston kit with a 77.02mm bore and 76.98mm diameter. This 2-ring piston is engineered for high performance, featuring superior strength and design. Manufactured in Germany, it ensures optimal heat transfer to cylinder walls. Its elliptical design provides a uniform bearing surface under heat expansion, reducing localized pressure and evenly distributing thrust loads to prevent piston collapse. Features forged construction for superior strength, optimized heat transfer for efficient combustion, elliptical design for uniform load distribution, 2-ring piston design for performance applications, and increased compression ratio for improved power output. Specifications include a bore of 77.02mm, diameter of 76.98mm, display of 249 cm³, stroke of 53.60mm, clearance of 0.04mm, Wossner compression ratio of 14.10:1, OEM compression ratio of 13.50:1, dome volume of -5.00 cm³, and compression height of 22.50mm. Cross-reference OEM part numbers include Wossner Piston Yamaha YZ250F (PN# 8713DC), Lock P/N CW16, Pin P/N WP059, Ring Set P/N 770XAS, and Rod P/N P4005.","descriptionMarkdown":"### Wossner Forged Piston Kit - High Performance Upgrade\n\n This Wossner forged piston kit is engineered for high performance and superior strength in demanding applications.\n Crafted with precision in Germany, this 2-ring piston is designed to enhance your motorcycle's power output\n and ensure reliability under extreme conditions.\n\n#### Key Features:\n\n \n- Forged Construction: Provides exceptional strength and durability compared to cast pistons.\n \n- Optimized Heat Transfer: Designed for efficient heat dissipation to the cylinder walls, promoting optimal combustion.\n \n- Elliptical Design: Ensures a uniform bearing surface under heat expansion, reducing localized pressure and evenly distributing thrust loads for a longer lifespan.\n \n- 2-Ring Piston Design: Ideal for performance applications where efficient sealing and power are paramount.\n \n- Increased Compression Ratio: Offers improved power output and throttle response.\n \n- Manufactured in Germany: Guarantees high-quality engineering and manufacturing standards.\n\n#### Specifications:\n\n \n- Bore: 77.02mm\n \n- Diameter: 76.98mm\n \n- Display (cm³): 249\n \n- Stroke (mm): 53.60\n \n- Clearance (mm): 0.04\n \n- Wossner Compression Ratio: 14.10:1\n \n- OEM Compression Ratio: 13.50:1\n \n- Dome Volume (cm³): -5.00\n \n- Compression Height (mm): 22.50\n\n#### Included Components:\n\n \n- Wossner Piston (Part # 8713DC)\n \n- Lock P/N: CW16\n \n- Pin P/N: WP059\n \n- Ring Set P/N: 770XAS\n \n- Rod P/N: P4005","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-yzf-wrf-250-2-ring-wossner-8713dc-08-13-77mm","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/45e25fdddd99:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/45e25fdddd99:1"}},"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."]}}