{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"8da7d660ebc1","name":"PISTON KIT 1987 RM125 55.00, WOSSNER 8122D100 SUZUKI MX","sku":"56-W557+100_WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":125.68,"formatted":"£125.68"},"summary":"This Wossner 55.00mm (+1.00 oversize) forged piston kit is designed for two-stroke engine applications. Featuring a forged construction and elliptical profile, the piston provides improved strength, thermal expansion control, and even load distribution. Manufactured in Germany, it supports efficient heat transfer from the combustion chamber to the cylinder walls under high-performance conditions. Specifications include a bore of 55.00mm, actual diameter of 54.94mm, displacement of 123 cm³, stroke of 70.00mm, clearance of 0.06mm, compression height of 37.00mm, and a 2-stroke compression ratio. This kit includes piston, lock CW14, pin WP025, and two ring sets RSB5500. The kit part number is 56-W557+100.WO and the Wossner Piston Kit number is 8122D100.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"55mm"},{"label":"Variant Id","value":"256798"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock55744_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock55744_1.jpg"],"description":"This Wossner 55.00mm (+1.00 oversize) forged piston kit is designed for two-stroke engine applications. Featuring a forged construction and elliptical profile, the piston provides improved strength, thermal expansion control, and even load distribution. Manufactured in Germany, it supports efficient heat transfer from the combustion chamber to the cylinder walls under high-performance conditions. Specifications include a bore of 55.00mm, actual diameter of 54.94mm, displacement of 123 cm³, stroke of 70.00mm, clearance of 0.06mm, compression height of 37.00mm, and a 2-stroke compression ratio. This kit includes piston, lock CW14, pin WP025, and two ring sets RSB5500. The kit part number is 56-W557+100.WO and the Wossner Piston Kit number is 8122D100.","descriptionMarkdown":"### Wossner Forged Piston Kit 55.00mm (+1.00 Oversize) for Suzuki RM125\n\nUpgrade your Suzuki RM125's performance and durability with this Wossner forged piston kit. Designed with precision and engineered for high-performance two-stroke applications, this piston kit ensures optimal strength and heat management.\n\n#### Key Features:\n\n \n- Forged Construction: Provides superior strength and reliability compared to cast pistons, allowing for higher performance outputs.\n \n- Elliptical Piston Profile: Engineered to maintain a uniform bearing surface even with thermal expansion, reducing wear and increasing lifespan.\n \n- Even Load Distribution: The design helps to distribute thrust loads evenly across the piston, minimizing localized pressure and the risk of premature failure.\n \n- Optimized Heat Transfer: Facilitates efficient heat transfer from the combustion chamber to the cylinder walls, crucial for maintaining performance under demanding conditions.\n \n- German Manufacturing: Built to exacting standards in Germany, ensuring high quality and precision engineering.\n\n#### Specifications:\n\n \n- Bore: 55.00mm\n \n- Actual Diameter: 54.94mm\n \n- Displacement: 123 cm&sup3;\n \n- Stroke: 70.00mm\n \n- Clearance: 0.06mm\n \n- Compression Height: 37.00mm\n \n- Compression Ratio: 2-stroke\n\n#### Kit Components:\n\n \n- Piston Kit Part Number: 56-W557+\n \n- Wossner Piston Kit Number: 8122D100\n \n- Lock: CW14\n \n- Pin: WP025\n \n- Ring Set: RSB5500 x 2","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-1987-rm125-5500-wossner-8122d100-suzuki-mx","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/8da7d660ebc1:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/8da7d660ebc1:1"}},"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."]}}