{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"d805d9cf8e84","name":"PISTON KIT KTM 400 76-81 83.00, WOSSNER 8293D100 KTM 390","sku":"56-W9877.100.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":220.8,"formatted":"£220.80"},"summary":"Wossner 83mm bore forged piston kit part number 8293D100, +1mm oversize. This piston kit is engineered for enhanced durability and thermal efficiency, suitable for high-performance applications. Designed with an elliptical profile for optimal load distribution under heat expansion, it minimises piston wear and collapse. Manufactured in Germany, it includes precise components. Features a forged piston designed for increased strength and reliability, superior heat transfer for improved combustion efficiency, and an elliptical design that distributes thrust loads uniformly. Specifications include a bore of 83mm, bore size of 82.90mm, compression ratio of 13:1, compression height of 37.70mm, clearance of 0.10mm, stroke of 74.00mm, displacement of 389cm³ (KTM 390) and 355cm³ (KTM 400), clip part number CW18, piston pin WP0042, and ring set RSC8300.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"83.00mm"},{"label":"Variant Id","value":"259029"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W9877_2E100_2EWO/be0023ee467e7357.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W9877_2E100_2EWO/be0023ee467e7357.jpg"],"description":"Wossner 83mm bore forged piston kit part number 8293D100, +1mm oversize. This piston kit is engineered for enhanced durability and thermal efficiency, suitable for high-performance applications. Designed with an elliptical profile for optimal load distribution under heat expansion, it minimises piston wear and collapse. Manufactured in Germany, it includes precise components. Features a forged piston designed for increased strength and reliability, superior heat transfer for improved combustion efficiency, and an elliptical design that distributes thrust loads uniformly. Specifications include a bore of 83mm, bore size of 82.90mm, compression ratio of 13:1, compression height of 37.70mm, clearance of 0.10mm, stroke of 74.00mm, displacement of 389cm³ (KTM 390) and 355cm³ (KTM 400), clip part number CW18, piston pin WP0042, and ring set RSC8300.","descriptionMarkdown":"### Wossner 83mm Forged Piston Kit for KTM and Yamaha Performance Engines\n\nUpgrade your engine's performance and durability with this Wossner 83mm bore forged piston kit. Engineered for high-performance applications, this kit offers superior strength and thermal efficiency. The advanced elliptical piston profile ensures optimal load distribution, minimizing wear and potential collapse under extreme heat and expansion.\n\n**Key Features:**\n\n- Forged piston construction for enhanced strength and longevity.\n\n- Designed for superior heat transfer, leading to improved combustion efficiency.\n\n- Elliptical piston profile uniformly distributes thrust loads for reduced wear.\n\n- Precision manufactured in Germany for exceptional quality and reliability.\n\n- Includes all necessary components for a complete installation.\n\n**Specifications:**\n\n- Bore Diameter: 83.00mm\n\n- Oversize: +1mm\n\n- Piston Pin Diameter: WP0042\n\n- Clip Part Number: CW18\n\n- Ring Set: RSC8300","weightGrams":null,"fitments":[{"make":"KTM","model":"300 GS","cc":null,"notes":null,"years":"1976–1981"},{"make":"KTM","model":"400 GS","cc":null,"notes":null,"years":"1976–1981"}],"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-ktm-400-76-81-8300-wossner-8293d100-ktm-390","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/d805d9cf8e84:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/d805d9cf8e84:1"}},"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."]}}