{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"25fa08c5679e","name":"Husqvarna CR/WR 250 1985-1991 Grade E/F 69.97mm SINGLE RING","sku":"V.1757 E/F","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":202.42,"formatted":"£202.42"},"summary":"Vertex two-stroke pistons are gravity cast from an aluminum alloy with 18% silicon content. This high silicon content decreases thermal expansion, allowing for tighter tolerances and better performance with less susceptibility to rattling or breaking. Silicon also improves wear characteristics and prolongs piston life by decreasing wear on the piston skirt. This piston is for the Husqvarna CR/WR 250 models from 1985 to 1991, is Grade E/F, measures 69.97mm, and is a single ring piston.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/husqvarna-cr-wr-250-1985-1991-grade-e-f-69.97mm-single-ring-1358-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/husqvarna-cr-wr-250-1985-1991-grade-e-f-69.97mm-single-ring-1358-p.jpg"],"description":"Vertex two-stroke pistons are gravity cast from an aluminum alloy with 18% silicon content. This high silicon content decreases thermal expansion, allowing for tighter tolerances and better performance with less susceptibility to rattling or breaking. Silicon also improves wear characteristics and prolongs piston life by decreasing wear on the piston skirt. This piston is for the Husqvarna CR/WR 250 models from 1985 to 1991, is Grade E/F, measures 69.97mm, and is a single ring piston.","descriptionMarkdown":"### Vertex Two-Stroke Piston - 69.97mm Single Ring\n\nMaintain the performance and longevity of your two-stroke engine with this precision-engineered Vertex piston. Designed specifically for high-performance two-stroke applications, this gravity-cast piston is crafted from a high-quality aluminum alloy containing 18% silicon content.\n\nVertex pistons are manufactured to deliver optimal reliability and power output. By utilizing a high silicon content, these pistons provide significant advantages in thermal management and mechanical efficiency within the cylinder.\n\n### Key Features\n\n \n- Advanced Silicon Alloy: The 18% silicon composition significantly decreases thermal expansion. This allows the piston to maintain its geometry at operating temperatures, enabling tighter clearances for improved power and performance.\n \n- Reduced Wear: The specialized alloy composition enhances wear characteristics, effectively prolonging the lifespan of the piston and reducing friction on the piston skirt.\n \n- Optimized for Two-Strokes: Engineered specifically for the pressures and operational requirements of two-stroke engines, providing superior durability compared to standard cast alternatives.\n \n- Precision Engineering: Manufactured to strict tolerances to minimize rattling and prevent premature mechanical failure, ensuring a smooth and consistent engine cycle.\n\nThis 69.97mm single-ring piston is an ideal choice for engine rebuilds where performance and component longevity are the primary objectives.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/husqvarna-crwr-250-1985-1991-grade-ef-6997mm-single-ring","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/25fa08c5679e:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/25fa08c5679e: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."]}}