{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"3384aeb79749","name":"PISTON KIT 10-13 YZF450 13.5 A, COMP 13.5:1 WOSSNER 8783DA, 33D-11631-00-00","sku":"56-W261.A.WO.HC","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":208.24,"formatted":"£208.24"},"summary":"Wossner high-compression forged piston kit designed for Yamaha YZ450F Fuel Injection models 2010-2013. Manufactured in Germany, this piston offers superior strength and an optimized design for efficient combustion chamber heat transfer. The elliptical shape ensures an even bearing surface, reducing localized pressure and evenly distributing thrust loads to prevent piston collapse. Features include high-compression design, forged construction, optimized heat transfer, and elliptical design for uniform bearing surface and even load distribution. Specifications: Bore 97 mm, Actual Bore Size 96.96 mm, Display 449 cm&sup3;, Stroke 60.80 mm, Clearance 0.04 mm, Wossner Compression Ratio 13.50:1, OEM Compression Ratio 12.50:1, Dome Volume -2.10 cm&sup3;, Compression Height 24.00 mm. Included Components: Piston Wossner 8783DA, Lock CW18, Pin WP072, Ring Set 970ADS, Rod P4032. Cross-Reference OEM Part Numbers: 33D-11631-00-00, 33D-116A0-00-00, 33D-11631-00-00 + 33D-11603-00-00 + 33D-11633-00-00 + 93450-19052-00.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"13.5mm"},{"label":"Variant Id","value":"255288"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W261_2EA_2EWO_2EHC/f1e343be3b559947.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W261_2EA_2EWO_2EHC/f1e343be3b559947.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W261_2EA_2EWO_2EHC/06ff0a13d3e95ab6.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W261_2EA_2EWO_2EHC/b2889b7210b43d53.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W261_2EA_2EWO_2EHC/c8906ebcc1445fe9.jpg"],"description":"Wossner high-compression forged piston kit designed for Yamaha YZ450F Fuel Injection models 2010-2013. Manufactured in Germany, this piston offers superior strength and an optimized design for efficient combustion chamber heat transfer. The elliptical shape ensures an even bearing surface, reducing localized pressure and evenly distributing thrust loads to prevent piston collapse. Features include high-compression design, forged construction, optimized heat transfer, and elliptical design for uniform bearing surface and even load distribution. Specifications: Bore 97 mm, Actual Bore Size 96.96 mm, Display 449 cm&sup3;, Stroke 60.80 mm, Clearance 0.04 mm, Wossner Compression Ratio 13.50:1, OEM Compression Ratio 12.50:1, Dome Volume -2.10 cm&sup3;, Compression Height 24.00 mm. Included Components: Piston Wossner 8783DA, Lock CW18, Pin WP072, Ring Set 970ADS, Rod P4032. Cross-Reference OEM Part Numbers: 33D-11631-00-00, 33D-116A0-00-00, 33D-11631-00-00 + 33D-11603-00-00 + 33D-11633-00-00 + 93450-19052-00.","descriptionMarkdown":"### Wossner High-Compression Forged Piston Kit\n\nEnhance your motorcycle's performance with this Wossner high-compression forged piston kit. Engineered for superior strength and durability, this kit is designed for optimal combustion efficiency and power output. Manufactured with precision in Germany, Wossner pistons utilize advanced design principles to ensure reliability and performance under demanding conditions.\n\n#### Key Features:\n\n\t\n- High-Compression Design: Significantly increases engine power and responsiveness with a 13.5:1 compression ratio, compared to the OEM 12.5:1.\n\t\n- Forged Construction: Provides exceptional strength and resilience, capable of withstanding higher combustion pressures and temperatures.\n\t\n- Optimized Heat Transfer: The piston's design promotes efficient transfer of combustion chamber heat, contributing to consistent performance and longevity.\n\t\n- Elliptical Shape: Ensures a uniform bearing surface, distributing thrust loads evenly and preventing localized pressure points for reduced wear and potential piston collapse.\n\t\n- German Manufacturing: Built to exacting standards in Germany, guaranteeing high quality and precision engineering.\n\n#### Specifications:\n\n\t\n- Bore: 97 mm\n\t\n- Actual Bore Size: 96.96 mm\n\t\n- Displacement: 449 cm&sup3;\n\t\n- Stroke: 60.80 mm\n\t\n- Piston Clearance: 0.04 mm\n\t\n- Wossner Compression Ratio: 13.50:1\n\t\n- Dome Volume: -2.10 cm&sup3;\n\t\n- Compression Height: 24.00 mm\n\n#### Included Components:\n\n\t\n- Piston: Wossner 8783DA\n\t\n- Piston Lock: CW18\n\t\n- Piston Pin: WP072\n\t\n- Piston Ring Set: 970ADS\n\t\n- Connecting Rod: P4032\n\n#### Cross-Reference OEM Part Numbers:\n\n\t\n- 33D-11631-00-00\n\t\n- 33D-116A0-00-00\n\t\n- 33D-11631-00-00 + 33D-11603-00-00 + 33D-11633-00-00 + 93450-19052-00","weightGrams":null,"fitments":[{"make":"YAMAHA","model":"YZ 450F","cc":null,"notes":null,"years":"2010–2013"},{"make":"YAMAHA","model":"YZF 450","cc":null,"notes":null,"years":"2010–2013"}],"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-10-13-yzf450-135-a-comp-1351-wossner-8783da-33d-11631-00-00","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/3384aeb79749:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/3384aeb79749:1"}},"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."]}}