{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"313d1f8765cc","name":"KTM SX-F 250 2013-2015 EXC-F 250 2014 - 2016  81mm 270cc BIG BORE KIT","sku":"CW.51004-K01","brand":"Cylinder Works","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":1053,"formatted":"£1,053.00"},"summary":"Cylinder Works 270cc Big Bore Cylinder Kit. Features an 81mm bore and 13.9:1 compression ratio. This 4-cycle, new, cast aluminum nickel silicon carbide (NSC) electroplated big bore cylinder increases horsepower and engine displacement. NSC provides an excellent wear-resistant surface with oil retention capabilities. Cylinders are diamond honed to the exact bore dimension and proper surface finish for correct ring seal and oil retention. Includes a hand-matched Vertex big bore piston forged from 2618 aluminum alloy for superior strength and durability, featuring unique piston profiles and compression ratios. Also includes a Vertex big bore gasket kit with head, base, and exhaust gaskets, plus O-rings.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/ktm-sx-f-250-2013-2015-exc-f-250-2014-2016-81mm-270cc-big-bore-kit-11413-1-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/ktm-sx-f-250-2013-2015-exc-f-250-2014-2016-81mm-270cc-big-bore-kit-11413-1-p.jpg"],"description":"Cylinder Works 270cc Big Bore Cylinder Kit. Features an 81mm bore and 13.9:1 compression ratio. This 4-cycle, new, cast aluminum nickel silicon carbide (NSC) electroplated big bore cylinder increases horsepower and engine displacement. NSC provides an excellent wear-resistant surface with oil retention capabilities. Cylinders are diamond honed to the exact bore dimension and proper surface finish for correct ring seal and oil retention. Includes a hand-matched Vertex big bore piston forged from 2618 aluminum alloy for superior strength and durability, featuring unique piston profiles and compression ratios. Also includes a Vertex big bore gasket kit with head, base, and exhaust gaskets, plus O-rings.","descriptionMarkdown":"### Increase Power with the Cylinder Works 270cc Big Bore Kit\n\nBoost your engine performance with this premium Big Bore Kit from Cylinder Works. Designed to provide a significant increase in displacement and horsepower, this kit offers an efficient and reliable way to upgrade your 4-cycle engine for a more exhilarating riding experience.\n\n### High Performance Cylinder Construction\n\nThe included cylinder is cast from high-quality aluminum and features a nickel silicon carbide (NSC) electroplated finish. This advanced composite coating provides superior wear resistance and excellent oil retention capabilities. Each cylinder is diamond honed to exact bore dimensions, ensuring a perfect ring seal and optimal engine longevity. These are new components, not remanufactured, ensuring consistent quality and performance.\n\n### Precision Forged Vertex Piston\n\nTo withstand the internal pressures of a high-performance four-stroke engine, this kit features a forged Vertex piston. Crafted from 2618 aluminum alloy, these pistons offer exceptional strength and durability. The piston profile is engineered to maximize power while effectively reducing blow-by and oil consumption. Each piston is hand-matched to its specific cylinder to ensure a precise, professional fit.\n\n### Complete Top-End Gasket Kit\n\nMaintenance and installation are made easier with the included top-end gasket kit. This comprehensive set contains all necessary components for a successful build, including:\n\n \n- Head gaskets\n \n- Base gaskets\n \n- Exhaust gaskets\n \n- Required O-rings\n\n### Key Features\n\n \n- Increased Displacement: Boost your engine to 270cc for improved power delivery.\n \n- Compression Ratio: Engineered with a 13.9:1 compression ratio.\n \n- Cylinder Diameter: Precision bored to 81mm.\n \n- Durable Finish: Nickel silicon carbide coating for reduced friction and heat resistance.\n \n- Ready for Install: Includes all essential gaskets and seals for a complete top-end rebuild.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/ktm-sx-f-250-2013-2015-exc-f-250-2014-2016-81mm-270cc-big-bore-kit","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/313d1f8765cc:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/313d1f8765cc: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."]}}