{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"104d59f83cf1","name":"PISTON KIT 87-89 KX250 67.40, WOSSNER 8129DA KAWASAKI MX 13001-1246","sku":"56-W556+000.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":false,"stock":0,"price":{"amount":153.68,"formatted":"£153.68"},"summary":"Wossner 67.40mm standard bore forged piston kit for Kawasaki KX250 1987-1989. Features forged construction with an elliptical design for heat expansion and load distribution. Built for two-stroke applications, this kit supports efficient combustion heat transfer and structural reliability. Manufactured in Germany. Specifications: Bore 67.40mm, Actual diameter 67.34mm, Displacement 249 cm³, Stroke 70.00mm, Clearance 0.06mm, Compression height 37.00mm, Compression ratio 2-stroke. Includes Wossner Piston Kit No. 8129DA, Lock CW18, Pin WP033, Ring Set RSB6740 x 2. OEM Reference: 13001-1246. Additional Reference: 556M06740. Piston Kit Part No.: 56-W556+000.WO. Weight: 320g.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"67.4mm"},{"label":"Variant Id","value":"256788"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W556_2B000_2EWO/10cb1b88ef462f08.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W556_2B000_2EWO/10cb1b88ef462f08.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W556_2B000_2EWO/c86b1aa391092869.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W556_2B000_2EWO/698e5e7312334bb4.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W556_2B000_2EWO/e1136e4429747cc2.jpg"],"description":"Wossner 67.40mm standard bore forged piston kit for Kawasaki KX250 1987-1989. Features forged construction with an elliptical design for heat expansion and load distribution. Built for two-stroke applications, this kit supports efficient combustion heat transfer and structural reliability. Manufactured in Germany. Specifications: Bore 67.40mm, Actual diameter 67.34mm, Displacement 249 cm³, Stroke 70.00mm, Clearance 0.06mm, Compression height 37.00mm, Compression ratio 2-stroke. Includes Wossner Piston Kit No. 8129DA, Lock CW18, Pin WP033, Ring Set RSB6740 x 2. OEM Reference: 13001-1246. Additional Reference: 556M06740. Piston Kit Part No.: 56-W556+000.WO. Weight: 320g.","descriptionMarkdown":"### Wossner Forged Piston Kit for Kawasaki KX250 (1987-1989)\n\nThis Wossner forged piston kit is precision engineered for high-performance two-stroke engines. Designed to meet the demanding requirements of motocross, this kit offers superior strength, durability, and efficient heat management for your Kawasaki KX250.\n\n#### Key Features:\n\n\t\n- Forged Construction: Provides exceptional strength and longevity, handling higher combustion pressures and temperatures.\n\t\n- Elliptical Piston Design: Engineered to accommodate thermal expansion, ensuring an even bearing surface during operation and reducing stress.\n\t\n- Optimized Load Distribution: Effectively manages thrust loads, minimizing localized pressure points and preventing piston collapse for enhanced reliability.\n\t\n- Efficient Heat Transfer: Promotes effective heat transfer from the combustion chamber to the cylinder walls, aiding in engine cooling and performance consistency.\n\t\n- German Manufacturing: Built to exacting standards in Germany, ensuring quality and performance you can trust.\n\n#### Specifications:\n\n\t\n- Bore Diameter: 67.40mm\n\t\n- Actual Piston Diameter: 67.34mm\n\t\n- Engine Displacement: 249 cm³\n\t\n- Stroke: 70.00mm\n\t\n- Piston to Cylinder Clearance: 0.06mm\n\t\n- Compression Height: 37.00mm\n\t\n- Compression Ratio Type: 2-stroke\n\n#### Included Components:\n\n\t\n- Forged Piston\n\t\n- Piston Pin (WP033)\n\t\n- Lock Clips (CW18)\n\t\n- Ring Set (RSB6740 x 2)\n\n#### Cross-Reference Part Numbers:\n\n\t\n- Wossner Piston Kit: 8129DA\n\t\n- Wossner Part Number: 56-W556+\n\t\n- Additional Reference: 556M06740\n\t\n- OEM Reference: 13001-1246","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-87-89-kx250-6740-wossner-8129da-kawasaki-mx-13001-1246","buyOneNow":null,"basketWithThis":null}},"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."]}}