{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"2787ccfc4b73","name":"PISTON KIT SET/4 HAYABUSA 81, WOSSNER K8734DA-4 SUZUKI, 1999-2007 DISPL. 1300cc","sku":"56-W9894.000.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":793.43,"formatted":"£793.43"},"summary":"Wossner forged piston kit K8734DA-4 features a standard 81.00mm bore and is designed for turbocharged applications. Supplied as a set of four pistons, this kit is optimized for turbocharged engines, offering a reduced compression ratio to support forced induction. Manufactured in Germany, it provides exceptional thermal efficiency and structural integrity. The pistons have an elliptical profile to support even expansion and thrust load distribution, minimizing localized pressure and preventing piston collapse. Specifications include a bore of 81.00mm (STD), piston code Wossner K8734DA-4, clip part number CW20, piston pin WP065, ring set RIK81.00A, displacement 1299 / 1362 cm³, stroke 63.00 mm, clearance 0.07 mm, Wossner compression ratio 9.00:1 (OEM 11.00:1), dome volume -17.80 cm³, and compression height 26.80 mm.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"81.00mm"},{"label":"Variant Id","value":"259087"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W9894_2E000_2EWO/1d7eea6b3a1ded55.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W9894_2E000_2EWO/1d7eea6b3a1ded55.jpg"],"description":"Wossner forged piston kit K8734DA-4 features a standard 81.00mm bore and is designed for turbocharged applications. Supplied as a set of four pistons, this kit is optimized for turbocharged engines, offering a reduced compression ratio to support forced induction. Manufactured in Germany, it provides exceptional thermal efficiency and structural integrity. The pistons have an elliptical profile to support even expansion and thrust load distribution, minimizing localized pressure and preventing piston collapse. Specifications include a bore of 81.00mm (STD), piston code Wossner K8734DA-4, clip part number CW20, piston pin WP065, ring set RIK81.00A, displacement 1299 / 1362 cm³, stroke 63.00 mm, clearance 0.07 mm, Wossner compression ratio 9.00:1 (OEM 11.00:1), dome volume -17.80 cm³, and compression height 26.80 mm.","descriptionMarkdown":"### Wossner Forged Piston Kit - Set of 4\n\n This Wossner forged piston kit (part number K8734DA-4) is designed for high-performance turbocharged engines, specifically for SUZUKI HAYABUSA TURBO GSX R 1300 models. This set includes four pistons, each featuring an 81.00mm bore, which is the standard size. These pistons are optimized for turbocharged applications, offering a reduced compression ratio to accommodate forced induction while ensuring strength and reliability under demanding conditions. Manufactured in Germany, they provide excellent thermal efficiency and structural integrity.\n\n### Key Features:\n\n \n- Forged piston construction for high-performance turbocharged engines\n \n- Engineered for effective heat transfer from the combustion chamber to cylinder walls\n \n- Elliptical piston profile supports even expansion and thrust load distribution\n \n- Minimizes localized pressure and prevents piston collapse\n \n- Manufactured in Germany\n\n### Specifications:\n\n \n- Bore: 81.00mm (STD)\n \n- Piston Code: Wossner K8734DA-4\n \n- Clip Part Number: CW20\n \n- Piston Pin: WP065\n \n- Ring Set: RIK81.00A\n \n- Displacement: 1299 / 1362 cm&sup3;\n \n- Stroke: 63.00 mm\n \n- Clearance: 0.07 mm\n \n- Wossner Compression Ratio: 9.00:1\n \n- OEM Compression Ratio: 11.00:1\n \n- Dome Volume: -17.80 cm&sup3;\n \n- Compression Height: 26.80 mm","weightGrams":null,"fitments":[{"make":"SUZUKI","model":"GSX R HAYABUSA 1300","cc":null,"notes":null,"years":"1999–2007"}],"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-kit-set4-hayabusa-81-wossner-k8734da-4-suzuki-1999-2007-displ-1300cc","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/2787ccfc4b73:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/2787ccfc4b73:1"}},"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."]}}