{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"0b580504ed3f","name":"PRIMARY DRIVE CONVERSION SPROCKET SET 219 57T & 25T SUR-RON ULTRA BEE","sku":"UB-OEM-061","brand":"SUR-RON","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":20,"price":{"amount":43.33,"formatted":"£43.33"},"summary":"SUR-RON Primary Drive Conversion Sprocket Set 219 Chain 57T and 25T This SUR-RON primary drive sprocket set is a 219 chain conversion kit that replaces the original primary belt drive with a chain-…","attributes":[{"label":"Date Created","value":"19/06/2026 10:13:49"},{"label":"Date Last Updated","value":"17/08/2026 12:55:35"},{"label":"Manufacturer","value":"SUR-RON"},{"label":"On Order","value":"0"},{"label":"Stock Id","value":"354421"},{"label":"Weight Grams","value":"730"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/UB-OEM-061/c55a6471cabd7c78.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/UB-OEM-061/c55a6471cabd7c78.jpg"],"description":"SUR-RON Primary Drive Conversion Sprocket Set 219 Chain 57T and 25T This SUR-RON primary drive sprocket set is a 219 chain conversion kit that replaces the original primary belt drive with a chain-…","descriptionMarkdown":"### SUR-RON Primary Drive Conversion Sprocket Set 219 Chain 57T and 25T\n\nThis **SUR-RON** primary drive sprocket set is a 219 chain conversion kit that replaces the original primary belt drive with a chain-driven setup between the motor and secondary shaft. It uses a 25 tooth motor sprocket and a 57 tooth intermediate sprocket, and suits off-road use where belt drive systems can be exposed to mud, debris and heavy loads.\n\n### Key Features\n\n- Converts the original primary belt drive to a chain drive system\n\n- Intended for the primary transmission between the motor and secondary shaft\n\n- Suitable for enduro, trail and muddy off-road riding conditions\n\n- Supplied as a complete installation kit\n\n- Helps reduce the risk of primary belt failure during demanding off-road use\n\n### Specifications\n\n- Chain pitch: 219\n\n- Motor sprocket: 25 teeth\n\n- Intermediate sprocket: 57 teeth\n\n- Sprocket material: Treated steel\n\n- Sprocket finish: Zinc plated\n\n- Chain colour: Gold\n\n### What's in the Box\n\n- 1 x 25T motor sprocket\n\n- 1 x 57T intermediate sprocket\n\n- 1 x 219 chain\n\n- 1 x Master link\n\n- Mounting bolts","weightGrams":730,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/primary-drive-conversion-sprocket-set-219-57t-25t-sur-ron-ultra-bee","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/0b580504ed3f:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/0b580504ed3f: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."]}}