{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"6bd66ae208b8","name":"PISTON KIT 1997 YZ125 54.00, WOSSNER 8117DC YAMAHA MX","sku":"56-W693.C.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":115.32,"formatted":"£115.32"},"summary":"Wossner forged piston kit for 1997 Yamaha YZ125 with a 54.02mm bore (+0.02mm oversize). Features an elliptical profile to accommodate thermal expansion, providing an even bearing surface, reducing localised stress, distributing thrust loads uniformly, and preventing piston collapse. Facilitates effective heat transfer from the combustion chamber to the cylinder wall. German-engineered for precision and performance. Specifications: Bore Size 54.02mm (+0.02mm oversize), Actual Diameter 53.96mm, Compression Height 28.00mm, Stroke 54.50mm, Displacement 124 cm&sup3;, Piston Clearance 0.06mm, Compression Ratio 2-stroke (Wossner and OEM). Includes Lock CW15, Pin WP032, Ring Set RSB5400. Piston Kit Part No: 8117DC.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"54.00mm"},{"label":"Variant Id","value":"257472"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W693_2EC_2EWO/34ea9848e03a3b1c.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W693_2EC_2EWO/34ea9848e03a3b1c.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W693_2EC_2EWO/5380f142903b6757.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W693_2EC_2EWO/b0f9516fb78cba44.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W693_2EC_2EWO/9d34e8c8f7793ab2.jpg"],"description":"Wossner forged piston kit for 1997 Yamaha YZ125 with a 54.02mm bore (+0.02mm oversize). Features an elliptical profile to accommodate thermal expansion, providing an even bearing surface, reducing localised stress, distributing thrust loads uniformly, and preventing piston collapse. Facilitates effective heat transfer from the combustion chamber to the cylinder wall. German-engineered for precision and performance. Specifications: Bore Size 54.02mm (+0.02mm oversize), Actual Diameter 53.96mm, Compression Height 28.00mm, Stroke 54.50mm, Displacement 124 cm&sup3;, Piston Clearance 0.06mm, Compression Ratio 2-stroke (Wossner and OEM). Includes Lock CW15, Pin WP032, Ring Set RSB5400. Piston Kit Part No: 8117DC.","descriptionMarkdown":"### Wossner Forged Piston Kit - Performance and Reliability\n\nThis Wossner forged piston kit is engineered for optimal performance and durability. Crafted in Germany, this piston features an advanced elliptical design. This innovative profile is specifically developed to manage thermal expansion, ensuring an even bearing surface under high operating temperatures. By reducing localized stress and distributing thrust loads uniformly, this design effectively prevents piston collapse, enhancing engine reliability even in demanding conditions. The piston also facilitates superior heat transfer from the combustion chamber to the cylinder wall, contributing to consistent engine operation.\n\n#### Key Features:\n\n\t\n- Forged construction for maximum strength and longevity.\n\t\n- Elliptical piston design for uniform pressure distribution under heat.\n\t\n- Minimizes risk of structural failure associated with piston collapse.\n\t\n- Promotes efficient heat transfer for consistent engine performance.\n\t\n- Precision engineered in Germany for superior quality and performance.\n\n#### Specifications:\n\n\t\n- Bore Size: 54.02mm (+0.02mm oversize)\n\t\n- Actual Diameter: 53.96mm\n\t\n- Compression Height: 28.00mm\n\t\n- Stroke: 54.50mm\n\t\n- Displacement: 124 cm&sup3;\n\t\n- Piston Clearance: 0.06mm\n\t\n- Compression Ratio: 2-stroke (compatible with Wossner and OEM specifications)\n\n#### Component Details:\n\n\t\n- Wossner Piston Kit Part Number: 8117DC\n\t\n- Lock: CW15\n\t\n- Piston Pin: WP032\n\t\n- Ring Set: RSB5400","weightGrams":null,"fitments":[{"make":"YAMAHA","model":"YZ 125","cc":null,"notes":null,"years":"1997"}],"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-1997-yz125-5400-wossner-8117dc-yamaha-mx","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/6bd66ae208b8:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/6bd66ae208b8:1"}},"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."]}}