{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"da56b646014f","name":"PISTON KIT 00-05 KTM250 66.40, WOSSNER 8081DA 2-RING 54630207100","sku":"56-W753.A.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":144.97,"formatted":"£144.97"},"summary":"Wossner 2-ring forged piston kit with a 66.40mm bore and 66.34mm actual piston size. Designed for two-stroke engine applications, this piston offers superior mechanical strength, durability, and optimal heat transfer. Features an elliptical design for uniform load distribution and is precision engineered in Germany. Includes piston (PN# 8081DA), lock (PN# CW18), pin (WP033), two ring sets (RSB6640), and rod (P2023). Bore size 66.40 mm, actual piston size 66.34 mm, display 249 cm³, stroke 72.00 mm, clearance 0.06 mm, compression height 38.00 mm. Cross-reference OEM part numbers: 54630207100, 09104804, 857M06640.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"66.40mm"},{"label":"Variant Id","value":"257667"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock56613_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock56613_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock56613_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock56613_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock56613_4.jpg"],"description":"Wossner 2-ring forged piston kit with a 66.40mm bore and 66.34mm actual piston size. Designed for two-stroke engine applications, this piston offers superior mechanical strength, durability, and optimal heat transfer. Features an elliptical design for uniform load distribution and is precision engineered in Germany. Includes piston (PN# 8081DA), lock (PN# CW18), pin (WP033), two ring sets (RSB6640), and rod (P2023). Bore size 66.40 mm, actual piston size 66.34 mm, display 249 cm³, stroke 72.00 mm, clearance 0.06 mm, compression height 38.00 mm. Cross-reference OEM part numbers: 54630207100, 09104804, 857M06640.","descriptionMarkdown":"### Wossner Forged Piston Kit\n\nEnhance the performance and reliability of your two-stroke engine with this high-quality Wossner forged piston kit. Engineered in Germany for demanding applications, this piston kit is built to withstand extreme conditions and deliver consistent power.\n\n#### Key Features\n\n\t\n- Forged piston construction for superior strength and durability.\n\t\n- Optimized for excellent heat transfer from the combustion chamber to the cylinder wall.\n\t\n- Elliptical design ensures uniform load distribution and prevents piston collapse under thermal stress.\n\t\n- Precision engineered and manufactured in Germany.\n\n#### Specifications\n\n\t\n- Bore Size: 66.40 mm\n\t\n- Actual Piston Size: 66.34 mm\n\t\n- Displacement (cm³): 249\n\t\n- Stroke (mm): 72.00\n\t\n- Clearance (mm): 0.06\n\t\n- Compression Ratio: 2-stroke (Wossner and OEM)\n\t\n- Compression Height (mm): 38.00\n\n#### Included Components\n\n\t\n- Wossner Piston PN# 8081DA\n\t\n- Lock PN# CW18\n\t\n- Pin PN# WP033\n\t\n- Ring Set PN# RSB6640 x 2\n\t\n- Rod PN# P2023\n\n#### Cross-Reference OEM Part Numbers\n\n\t\n- 54630207100\n\t\n- 09104804\n\t\n- 857M06640","weightGrams":null,"fitments":[{"make":"KTM","model":"250 EXC","cc":null,"notes":null,"years":"2000–2005"},{"make":"KTM","model":"250 MXC","cc":null,"notes":null,"years":"2000–2005"}],"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-00-05-ktm250-6640-wossner-8081da-2-ring-54630207100","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/da56b646014f:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/da56b646014f: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."]}}