{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"5f553beec79b","name":"PISTON KIT XT TT SR 500 87.50, FORGED WOSSNER 8505D050","sku":"56-W4045+050","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":242.76,"formatted":"£242.76"},"summary":"Wossner forged piston kit for 4-stroke engines, manufactured in Germany. Features forged construction for durability and strength, optimized heat transfer for improved performance, and an elliptical design for uniform bearing surface and reduced wear. Specifications include: Bore Size 87.50 mm, Actual Bore 87.43 mm, Stroke 84.00 mm, Clearance 0.07 mm, Compression Height 29.00 mm, Dome Volume +13.70 cm³, Compression Ratio 9.80:1, Displacement 449 cm³. Wossner Part No. 8505D050, Lock P/N CW20, Pin P/N WP052, Ring Set P/N 875XSY.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"87.5mm"},{"label":"Variant Id","value":"255509"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock54455_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock54455_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54455_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54455_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54455_4.jpg"],"description":"Wossner forged piston kit for 4-stroke engines, manufactured in Germany. Features forged construction for durability and strength, optimized heat transfer for improved performance, and an elliptical design for uniform bearing surface and reduced wear. Specifications include: Bore Size 87.50 mm, Actual Bore 87.43 mm, Stroke 84.00 mm, Clearance 0.07 mm, Compression Height 29.00 mm, Dome Volume +13.70 cm³, Compression Ratio 9.80:1, Displacement 449 cm³. Wossner Part No. 8505D050, Lock P/N CW20, Pin P/N WP052, Ring Set P/N 875XSY.","descriptionMarkdown":"### Wossner Forged Piston Kit - Enhanced Performance for Yamaha 500 Series\n\nUpgrade your Yamaha XT500, TT500, or SR500 with this premium forged piston kit from Wossner. Engineered in Germany, this high-quality piston is designed to deliver superior strength, durability, and improved performance for your 4-stroke engine.\n\n**Key Features:**\n\n\t\n- Forged Construction: Provides exceptional strength and resilience for demanding engine conditions.\n\t\n- Optimized Heat Transfer: Promotes efficient cooling, contributing to better overall engine performance and longevity.\n\t\n- Elliptical Design: Ensures uniform load distribution across the bearing surface, reducing localized pressure and preventing premature wear or piston collapse.\n\t\n- Increased Compression Ratio: Offers a 9.80:1 compression ratio (compared to OEM 9.00:1) for a noticeable boost in power.\n\n**Specifications:**\n\n\t\n- Bore Size: 87.50 mm\n\t\n- Actual Bore: 87.43 mm\n\t\n- Stroke: 84.00 mm\n\t\n- Clearance: 0.07 mm\n\t\n- Compression Height: 29.00 mm\n\t\n- Dome Volume: +13.70 cm&sup3;\n\t\n- Displacement: 449 cm&sup3;\n\t\n- Made in Germany\n\n**Included Components:**\n\n\t\n- Wossner Piston Part Number: 8505D050\n\t\n- Lock Ring Part Number: CW20\n\t\n- Piston Pin Part Number: WP052\n\t\n- Ring Set Part Number: 875XSY","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-xt-tt-sr-500-8750-forged-wossner-8505d050","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/5f553beec79b:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/5f553beec79b: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."]}}