{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"025f89fd2217","name":"PISTON KIT 01-09 YFM660 102 HC, FORGED WOSSNER 8577D200","sku":"56-W4737_200.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":231.1,"formatted":"£231.10"},"summary":"Wossner forged piston kit featuring a 102mm bore and 101.93mm size for high compression performance. Manufactured in Germany, this piston is engineered to enhance heat transfer, ensuring uniform expansion and even thrust load distribution. The elliptical design prevents localized pressure and piston collapse, making it ideal for high-performance applications. Specifications include a bore of 102mm, size of 101.93mm, part number 8577D200, OEM compression ratio of 19.20:1, lock part number CW22, ring set part number 1020XSY, displacement of 660 cm³, stroke of 84.00mm, clearance of 0.07mm, dome volume of +18.20 cm³, and compression height of 27.00mm. Features include high-strength forged construction, optimized heat transfer, elliptical design for uniform expansion, and a high compression ratio.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"102mm"},{"label":"Variant Id","value":"256012"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock54958_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock54958_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54958_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54958_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54958_4.jpg"],"description":"Wossner forged piston kit featuring a 102mm bore and 101.93mm size for high compression performance. Manufactured in Germany, this piston is engineered to enhance heat transfer, ensuring uniform expansion and even thrust load distribution. The elliptical design prevents localized pressure and piston collapse, making it ideal for high-performance applications. Specifications include a bore of 102mm, size of 101.93mm, part number 8577D200, OEM compression ratio of 19.20:1, lock part number CW22, ring set part number 1020XSY, displacement of 660 cm³, stroke of 84.00mm, clearance of 0.07mm, dome volume of +18.20 cm³, and compression height of 27.00mm. Features include high-strength forged construction, optimized heat transfer, elliptical design for uniform expansion, and a high compression ratio.","descriptionMarkdown":"### Wossner Forged Piston Kit - High Compression 102mm Bore\n\n Upgrade your Yamaha YFM660R Raptor or YFM660F Grizzly with this high-performance Wossner forged piston kit. Engineered for superior durability and enhanced engine output, this piston is precision-manufactured in Germany to exacting standards.\n\n This piston kit features a 102mm bore and a 101.93mm actual size, designed for a high compression ratio to unlock your engine's full potential. The advanced forged construction ensures exceptional strength, capable of withstanding the rigors of high-performance use.\n\n Wossner's innovative design focuses on optimizing heat transfer, promoting uniform thermal expansion and distributing thrust loads evenly. The unique elliptical shape of the piston actively prevents localized pressure points and the risk of piston collapse, ensuring reliable operation and longevity even under demanding conditions.\n\n### Key Features:\n\n \n- High-strength forged piston for maximum durability and performance.\n \n- Advanced design for optimized heat transfer and efficient combustion.\n \n- Elliptical piston shape ensures uniform expansion and prevents localized pressure.\n \n- High compression ratio for significant gains in engine power.\n \n- Expertly manufactured in Germany.\n\n### Specifications:\n\n \n- Bore: 102mm\n \n- Size: 101.93mm\n \n- Part Number: 8577D200\n \n- Compression Ratio: OEM\n \n- OEM Compression Ratio: 19.20:1\n \n- Lock Part Number: CW22\n \n- Ring Set Part Number: 1020XSY\n \n- Displacement: 660 cm&sup3;\n \n- Stroke: 84.00mm\n \n- Clearance: 0.07mm\n \n- Dome Volume: +18.20 cm&sup3;\n \n- Compression Height: 27.00mm","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-01-09-yfm660-102-hc-forged-wossner-8577d200","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/025f89fd2217:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/025f89fd2217:1"}},"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."]}}