{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"9e237c0ce2d4","name":"PISTON 94-08 KTM620 640 101 B, FORGED WOSSNER KIT 8524DB","sku":"56-W181.B","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":220.73,"formatted":"£220.73"},"summary":"Wossner forged piston kit with a 101.01mm bore for KTM 620, 625, and 640 models. Engineered for optimal combustion chamber heat transfer and uniform bearing surface under heat expansion, reducing localized pressure and piston collapse. Manufactured in Germany for durability and precision. Features include a forged piston for superior strength, optimized heat transfer to cylinder walls, and an elliptical design for uniform bearing surface and even thrust load distribution. Specifications: Bore 101.01mm (+0.01mm oversize), standard size piston (PN# 8524DB), lock part number CW22, pin part number WP009, ring set part number 1010XSY, displacement 600 cm&sup3;, stroke 76.00mm, clearance 0.06mm, Wossner compression ratio OEM, OEM compression ratio 11.70:1, dome volume +7.60 cm&sup3;, and compression height 26.50mm.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"101mm"},{"label":"Variant Id","value":"254880"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock53826_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock53826_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock53826_2.jpg"],"description":"Wossner forged piston kit with a 101.01mm bore for KTM 620, 625, and 640 models. Engineered for optimal combustion chamber heat transfer and uniform bearing surface under heat expansion, reducing localized pressure and piston collapse. Manufactured in Germany for durability and precision. Features include a forged piston for superior strength, optimized heat transfer to cylinder walls, and an elliptical design for uniform bearing surface and even thrust load distribution. Specifications: Bore 101.01mm (+0.01mm oversize), standard size piston (PN# 8524DB), lock part number CW22, pin part number WP009, ring set part number 1010XSY, displacement 600 cm&sup3;, stroke 76.00mm, clearance 0.06mm, Wossner compression ratio OEM, OEM compression ratio 11.70:1, dome volume +7.60 cm&sup3;, and compression height 26.50mm.","descriptionMarkdown":"### Wossner 101.01mm Forged Piston Kit for KTM Engines\n\nEnhance the performance and durability of your KTM motorcycle with this Wossner forged piston kit. Engineered with precision in Germany, this kit features a 101.01mm bore, offering a direct replacement or upgrade for specific KTM models. The forged construction provides superior strength, while advanced design features ensure optimal heat transfer and uniform bearing surface under extreme conditions.\n\n**Key Features:**\n\n \n- Forged Piston: Delivers exceptional strength and resilience for demanding use.\n \n- Optimized Heat Transfer: Promotes efficient cooling by improving heat transfer to cylinder walls, reducing the risk of localized hot spots.\n \n- Elliptical Design: Ensures a uniform bearing surface and even distribution of thrust loads, which helps prevent piston collapse under heat expansion.\n \n- Precision Manufacturing: Made in Germany to the highest standards of quality and accuracy.\n \n- OEM Compression Ratio: Designed to maintain the original equipment manufacturer's compression ratio for compatibility and predictable performance.\n\n**Specifications:**\n\n \n- Bore Size: 101.01mm (0.01mm oversize)\n \n- Piston Part Number: 8524DB\n \n- Lock Part Number: CW22\n \n- Pin Part Number: WP009\n \n- Ring Set Part Number: 1010XSY\n \n- Engine Displacement: 600 cm&sup3;\n \n- Stroke: 76.00mm\n \n- Piston Clearance: 0.06mm\n \n- Dome Volume: +7.60 cm&sup3;\n \n- Compression Height: 26.50mm","weightGrams":null,"fitments":[{"make":"KTM","model":"620 DUKE","cc":null,"notes":null,"years":"1994–1997"},{"make":"KTM","model":"620 LC4","cc":null,"notes":null,"years":"1994–2009"},{"make":"KTM","model":"620 LC4, DUKE","cc":null,"notes":null,"years":"1994–1997"},{"make":"KTM","model":"620 SC","cc":null,"notes":null,"years":"1998–2001"},{"make":"KTM","model":"620 SX C","cc":null,"notes":null,"years":"2002–2007"},{"make":"KTM","model":"620 SXC","cc":null,"notes":null,"years":"2002–2007"},{"make":"KTM","model":"625 SMC","cc":null,"notes":null,"years":"1994–2009"},{"make":"KTM","model":"625 SXC","cc":null,"notes":null,"years":"2002–2007"},{"make":"KTM","model":"640 Duke","cc":null,"notes":null,"years":"2008–2009"},{"make":"KTM","model":"640 DUKE","cc":null,"notes":null,"years":"1994–2007"},{"make":"KTM","model":"640 DUKE II","cc":null,"notes":null,"years":"1998–2007"},{"make":"KTM","model":"640 LC4","cc":null,"notes":null,"years":"1994–2009"},{"make":"KTM","model":"640 LC4, DUKE II","cc":null,"notes":null,"years":"1998–2007"}],"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-94-08-ktm620-640-101-b-forged-wossner-kit-8524db","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/9e237c0ce2d4:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/9e237c0ce2d4:1"}},"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."]}}