{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"55ffba224d09","name":"PISTON KIT KTM 175GS 64.50, WOSSNER 8292D100 KTM GS 77-82","sku":"56-W967.100.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":155.33,"formatted":"£155.33"},"summary":"Wossner forged piston kit with a 64.50mm bore size (64.44mm actual) for KTM 175 GS and MC models from 1977 to 1982. This +1.00mm oversize replacement is designed for two-stroke engines, offering advanced heat transfer and structural integrity for high-performance demands. The piston's elliptical shape ensures optimal load distribution during expansion, reducing stress concentrations and enhancing reliability. Features include forged construction for high strength and thermal performance, an elliptical design for uniform load distribution under heat expansion, and precision machining in Germany for consistent performance and durability. Specifications: Bore Size 64.50mm (actual 64.44mm), Stroke 54.00 mm, Clearance 0.06 mm, Compression Ratio (Wossner) 2-stroke, Compression Ratio (OEM) 12-stroke, Compression Height 37.00 mm, Lock Part Number CW15, Pin Part Number WP011, Ring Set Part Number RSB6450.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"64.50mm"},{"label":"Variant Id","value":"258458"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock57404_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock57404_1.jpg"],"description":"Wossner forged piston kit with a 64.50mm bore size (64.44mm actual) for KTM 175 GS and MC models from 1977 to 1982. This +1.00mm oversize replacement is designed for two-stroke engines, offering advanced heat transfer and structural integrity for high-performance demands. The piston's elliptical shape ensures optimal load distribution during expansion, reducing stress concentrations and enhancing reliability. Features include forged construction for high strength and thermal performance, an elliptical design for uniform load distribution under heat expansion, and precision machining in Germany for consistent performance and durability. Specifications: Bore Size 64.50mm (actual 64.44mm), Stroke 54.00 mm, Clearance 0.06 mm, Compression Ratio (Wossner) 2-stroke, Compression Ratio (OEM) 12-stroke, Compression Height 37.00 mm, Lock Part Number CW15, Pin Part Number WP011, Ring Set Part Number RSB6450.","descriptionMarkdown":"### Wossner 64.50mm Forged Piston Kit for KTM 175cc Two-Stroke Engines\n\nThis Wossner forged piston kit is engineered for high-performance two-stroke applications. It features a 64.50mm bore size (actual 64.44mm) and serves as a +1.00mm oversize replacement. The advanced forging process provides superior strength and exceptional heat transfer capabilities, crucial for handling the demanding conditions of racing and high-output engines.\n\nThe piston's innovative elliptical design is meticulously crafted to ensure optimal load distribution as the piston expands under heat. This precise engineering minimizes stress concentrations, significantly enhancing the reliability and longevity of your engine under peak performance.\n\nPrecision-machined in Germany, this Wossner piston kit guarantees consistent performance and durability, meeting the stringent standards expected by enthusiasts and professional racers alike.\n\n#### Key Features\n\n \n- High-Strength Forged Construction: Built for extreme durability and thermal performance in demanding two-stroke engines.\n \n- Elliptical Piston Design: Promotes uniform load distribution during thermal expansion, reducing stress and increasing reliability.\n \n- Precision Machining: Manufactured in Germany to exacting standards for consistent fit and function.\n \n- Oversize Replacement: A +1.00mm oversize piston designed to restore or enhance the original bore specifications.\n\n#### Specifications\n\n \n- Bore Size: 64.50mm (actual 64.44mm)\n \n- Stroke: 54.00 mm\n \n- Clearance: 0.06 mm\n \n- Compression Ratio (Wossner): 2-stroke\n \n- Compression Ratio (OEM): 12-stroke\n \n- Dome Volume: Not specified\n \n- Compression Height: 37.00 mm\n \n- Lock Part Number: CW15\n \n- Pin Part Number: WP011\n \n- Ring Set Part Number: RSB6450","weightGrams":null,"fitments":[{"make":"KTM","model":"175 GS","cc":null,"notes":null,"years":"1977–1982"}],"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-ktm-175gs-6450-wossner-8292d100-ktm-gs-77-82","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/55ffba224d09:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/55ffba224d09:1"}},"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."]}}