{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"e841bcbabdf9","name":"CYLINDER KIT 58mm BORE PISTON RINGS GASKETS 2004-2017 HONDA CBR125R FS125","sku":"56-K9033.58.CLK","brand":"No Brand","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":5,"price":{"amount":104.48,"formatted":"£104.48"},"summary":"This 58mm cylinder piston gasket rebuild kit is an aftermarket top-end replacement designed to restore the cylinder and piston assembly. It addresses issues such as low compression, cylinder blow-through, or piston seizure. Modification to the crankcase surface may be required for proper fitment depending on the engine type. The kit includes a cylinder, piston, rings, wristpin, clips, and a full top-end gasket kit. The piston is anodized for improved heat resistance and extended service life, and the gaskets are made from high-performance materials for increased reliability. This kit is designed for a standard bore size of 58mm x 47.2mm stroke with a 13mm steel piston pin and a compression ratio of 11:1. It is a cost-effective replacement for original components. Cylinder part number 12100-KGH-900, Cylinder Base Gasket part number 12191-KGH-901, Cylinder Head Gasket part number 12251-KTY-D30, Piston (Std) part number 13101-KGH-902, Piston Pin part number 13111-KGH-903, Piston Ring Set (Std) part number 13011-KGH-305, Piston Circlips part number 13115-GN5-910, Tensioner Gasket part number 14560-KGH-900, and Valve Stem Seals part number 12209-GB4-682. This kit originates from the Honda Sonic 125, which shares the same engine platform as the European CBR125R and Indonesian CS1 4-stroke engines. The cylinder surface design differs slightly between Sonic and CBR125 models. For CBR125R installation, modification of the crankcase surface is required to eliminate any gap. After modification, the cylinder is compatible with both Sonic and CBR engines. The package includes 1x 58mm cylinder, 1x piston, 1x piston ring set, 1x wristpin, 2x circlips, 1x cylinder base gasket, 1x cylinder head gasket, 1x tensioner gasket, and 2x valve stem seals.","attributes":[{"label":"Variant Id","value":"346587"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K9033_2E58_2ECLK/475c5c4b62f84623.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K9033_2E58_2ECLK/475c5c4b62f84623.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K9033_2E58_2ECLK/366aec2f83653ed7.png","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K9033_2E58_2ECLK/83748cf333e58817.png","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K9033_2E58_2ECLK/97f7567bc55012de.png","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K9033_2E58_2ECLK/a723c37930d3dcff.png"],"description":"This 58mm cylinder piston gasket rebuild kit is an aftermarket top-end replacement designed to restore the cylinder and piston assembly. It addresses issues such as low compression, cylinder blow-through, or piston seizure. Modification to the crankcase surface may be required for proper fitment depending on the engine type. The kit includes a cylinder, piston, rings, wristpin, clips, and a full top-end gasket kit. The piston is anodized for improved heat resistance and extended service life, and the gaskets are made from high-performance materials for increased reliability. This kit is designed for a standard bore size of 58mm x 47.2mm stroke with a 13mm steel piston pin and a compression ratio of 11:1. It is a cost-effective replacement for original components. Cylinder part number 12100-KGH-900, Cylinder Base Gasket part number 12191-KGH-901, Cylinder Head Gasket part number 12251-KTY-D30, Piston (Std) part number 13101-KGH-902, Piston Pin part number 13111-KGH-903, Piston Ring Set (Std) part number 13011-KGH-305, Piston Circlips part number 13115-GN5-910, Tensioner Gasket part number 14560-KGH-900, and Valve Stem Seals part number 12209-GB4-682. This kit originates from the Honda Sonic 125, which shares the same engine platform as the European CBR125R and Indonesian CS1 4-stroke engines. The cylinder surface design differs slightly between Sonic and CBR125 models. For CBR125R installation, modification of the crankcase surface is required to eliminate any gap. After modification, the cylinder is compatible with both Sonic and CBR engines. The package includes 1x 58mm cylinder, 1x piston, 1x piston ring set, 1x wristpin, 2x circlips, 1x cylinder base gasket, 1x cylinder head gasket, 1x tensioner gasket, and 2x valve stem seals.","descriptionMarkdown":"### 58mm Cylinder Piston Rebuild Kit for Honda CBR125R\n\nRestore your motorcycle's top-end performance with this comprehensive 58mm Cylinder Piston Gasket Rebuild Kit. Designed as a direct replacement, this kit addresses common issues like low compression, cylinder blow-through, and piston seizure, providing a cost-effective solution to revive your engine.\n\n**Key Features:**\n\n\t\n- Complete Top-End Overhaul: Includes cylinder, piston, piston rings, wristpin, clips, and a full set of high-performance gaskets for a thorough rebuild.\n\t\n- Enhanced Durability: The piston is anodized for superior heat resistance and an extended service life.\n\t\n- High-Quality Gaskets: Made from premium materials to ensure reliability and a secure seal.\n\t\n- Restores Engine Performance: Ideal for resolving issues such as low compression, piston seizure, or cylinder failure.\n\t\n- Standard Bore Size: Features a 58mm bore diameter with a 47.2mm stroke and a 13mm steel piston pin.\n\t\n- Optimized Compression Ratio: Achieves an 11:1 compression ratio for potent power delivery.\n\n**Specifications:**\n\n\t\n- Bore Diameter: 58mm (STD)\n\t\n- Stroke: 47.2mm\n\t\n- Piston Pin Diameter: 13mm\n\n**Package Contents:**\n\n\t\n- 1x 58mm Cylinder\n\t\n- 1x Piston\n\t\n- 1x Piston Ring Set\n\t\n- 1x Wristpin\n\t\n- 2x Circlips\n\t\n- 1x Cylinder Base Gasket\n\t\n- 1x Cylinder Head Gasket\n\t\n- 1x Tensioner Gasket\n\t\n- 2x Valve Stem Seals\n\n**Important Note on Installation:** This kit is derived from the Honda Sonic 125, sharing an engine platform with the CBR125R. Minor modifications to the crankcase surface may be necessary for a perfect fit on CBR125R models to eliminate any potential gap. Methods such as welding or using a two-component epoxy aluminum adhesive can be employed for this adaptation.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/cylinder-kit-58mm-bore-piston-rings-gaskets-2004-2017-honda-cbr125r-fs125","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/e841bcbabdf9:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/e841bcbabdf9:1"}},"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."]}}