{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"3a778d63c470","name":"PISTON KIT 99-18 YZ250 66.40 B, WOSSNER 8216DB YAMAHA MX, 2 RING PISTON","sku":"56-W742.B.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":6,"price":{"amount":144.97,"formatted":"£144.97"},"summary":"Wossner 8216DB piston kit featuring a 66.41mm bore (0.01mm oversize, 66.36mm actual size) and forged 2-ring construction for Yamaha YZ250 models. Precision-made in Germany, this piston is engineered for high-performance, offering strength, durability, and optimized heat transfer. Features include an elliptical shape for uniform bearing surface and reduced risk of piston collapse. Specifications: bore size 66.41 mm, actual piston size 66.36 mm, display (cm³) 249, stroke 54.10 mm, clearance 0.06 mm, compression ratio 2-stroke, compression height 28.00 mm. Included components: Piston Wossner PN# 8216DB (2-ring), Lock PN# CW18, Pin PN# WP033, Ring Set PN# RSB6640 x 2, Rod PN# P2028.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"66.40mm"},{"label":"Variant Id","value":"257594"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W742_2EB_2EWO/b4416563f39d730c.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W742_2EB_2EWO/b4416563f39d730c.jpg"],"description":"Wossner 8216DB piston kit featuring a 66.41mm bore (0.01mm oversize, 66.36mm actual size) and forged 2-ring construction for Yamaha YZ250 models. Precision-made in Germany, this piston is engineered for high-performance, offering strength, durability, and optimized heat transfer. Features include an elliptical shape for uniform bearing surface and reduced risk of piston collapse. Specifications: bore size 66.41 mm, actual piston size 66.36 mm, display (cm³) 249, stroke 54.10 mm, clearance 0.06 mm, compression ratio 2-stroke, compression height 28.00 mm. Included components: Piston Wossner PN# 8216DB (2-ring), Lock PN# CW18, Pin PN# WP033, Ring Set PN# RSB6640 x 2, Rod PN# P2028.","descriptionMarkdown":"### Wossner High-Performance Piston Kit\n\nEnhance the performance and reliability of your motorcycle with this Wossner piston kit. Engineered for demanding applications, this kit features a forged 2-ring piston designed for exceptional strength and thermal efficiency. Precision-made in Germany, Wossner pistons are built to withstand the rigors of high-performance two-stroke engines.\n\n**Key Features:**\n\n \n- Forged Construction: Provides maximum strength and durability for high-stress environments.\n \n- Optimised Heat Transfer: Designed to efficiently transfer heat from the combustion chamber to the cylinder walls, improving thermal management.\n \n- Elliptical Piston Shape: Ensures a uniform bearing surface, reducing wear and minimizing the risk of piston collapse under thermal stress.\n \n- High-Quality Materials: Built to exacting standards for reliable performance and longevity.\n \n- Precision Manufacturing: Made in Germany for superior quality and fitment.\n\n**Specifications:**\n\n \n- Bore Size: 66.41 mm\n \n- Actual Piston Size: 66.36 mm\n \n- Displacement (cm³): 249\n \n- Stroke (mm): 54.10\n \n- Clearance (mm): 0.06\n \n- Compression Height (mm): 28.00\n \n- Compression Ratio: 2-stroke (Wossner and OEM)\n\n**Included Components:**\n\n \n- Piston: Wossner PN# 8216DB (2-ring)\n \n- Lock: PN# CW18\n \n- Pin: PN# WP033\n \n- Ring Set: PN# RSB6640 x 2\n \n- Rod: PN# P2028","weightGrams":null,"fitments":[{"make":"FANTIC","model":"XX 250","cc":null,"notes":null,"years":"2022–2025"},{"make":"SUZUKI","model":"RM 250","cc":null,"notes":null,"years":"2003–2012"},{"make":"YAMAHA","model":"YZ 250","cc":null,"notes":null,"years":"1999–2025"},{"make":"YAMAHA","model":"YZ 250X","cc":null,"notes":null,"years":"2016–2025"}],"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-99-18-yz250-6640-b-wossner-8216db-yamaha-mx-2-ring-piston","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/3a778d63c470:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/3a778d63c470:1"}},"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."]}}