{"product_id":"gm-ecotec-cylinder-sleeves","title":"GM Ecotec Cylinder Sleeves | Gen 3 Performance Dry Sleeves 88mm–92mm | BK Racing","description":"\u003ch1\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eBK Racing GM Ecotec Performance Cylinder Sleeves (Kit of 4 sleeves)\u003c\/b\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003ch2\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eStrengthen the Foundation of Your GM Ecotec Engine\u003c\/b\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"p2\"\u003eWhen building a high-performance GM Ecotec engine, the cylinder block is the foundation of reliability. BK Racing GM Ecotec Performance Cylinder Sleeves were engineered specifically for Gen 3 GM Ecotec engine blocks requiring increased cylinder strength, improved stability, and large-bore capability beyond the limitations of factory cylinder sleeves.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eManufactured from premium centrifugally cast ductile iron with chromium-enhanced wear resistance, these precision-machined dry sleeves are designed for naturally aspirated, turbocharged, supercharged, and sustained high-RPM racing applications. Whether you’re repairing a damaged block or building a serious competition engine, BK Racing sleeves provide the strength and precision serious engine builders demand.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eNew to Ecotec cylinder sleeves?\u003c\/b\u003e Before starting your build, read our \u003cspan class=\"s1\"\u003e\u003cb\u003eGM Ecotec Cylinder Sleeve Guide\u003c\/b\u003e\u003c\/span\u003e to learn when sleeves are required, how they strengthen the block, recommended bore sizes, and what to expect during installation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eWhy Choose BK Racing Ecotec Cylinder Sleeves?\u003c\/b\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp class=\"p2\"\u003eUnlike generic replacement sleeves, BK Racing sleeves were developed specifically for serious Ecotec engine builders.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eEvery sleeve is individually measured, inspected, and grouped into matched four-cylinder sets based on body diameter and flange dimensions. This additional quality control helps improve installation consistency while providing a more uniform foundation during machining.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eDesigned for professional engine builders, these sleeves are intended for engines where reliability, cylinder stability, and machining precision are critical.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eDesigned for Serious Performance\u003c\/b\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp class=\"p4\"\u003eBK Racing Ecotec Cylinder Sleeves are ideal for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCircle Track Racing\u003c\/li\u003e\n\u003cli\u003eDrag Racing\u003c\/li\u003e\n\u003cli\u003eRoad Racing\u003c\/li\u003e\n\u003cli\u003eTime Attack\u003c\/li\u003e\n\u003cli\u003eTurbocharged Engines\u003c\/li\u003e\n\u003cli\u003eSupercharged Engines\u003c\/li\u003e\n\u003cli\u003eHigh Compression Naturally Aspirated Builds\u003c\/li\u003e\n\u003cli\u003eLarge Bore Engine Combinations\u003c\/li\u003e\n\u003cli\u003eProfessional Engine Rebuilds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p3\"\u003eAs cylinder pressure and horsepower increase, maintaining cylinder stability becomes increasingly important for ring seal, durability, and long-term engine reliability.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eEngine Compatibility\u003c\/b\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp class=\"p4\"\u003eDesigned for GM Gen 3 Ecotec engine blocks including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLNF\u003c\/li\u003e\n\u003cli\u003eLDK\u003c\/li\u003e\n\u003cli\u003eLE9\u003c\/li\u003e\n\u003cli\u003eLAF\u003c\/li\u003e\n\u003cli\u003eLEA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p3\"\u003eCompatible with Gen 3 Ecotec engine architecture.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eBore Capability\u003c\/b\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp class=\"p4\"\u003eBK Racing sleeves can be finish honed from:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e88.0mm\u003c\/li\u003e\n\u003cli\u003e88.5mm\u003c\/li\u003e\n\u003cli\u003e89.0mm\u003c\/li\u003e\n\u003cli\u003e89.5mm\u003c\/li\u003e\n\u003cli\u003e90.0mm\u003c\/li\u003e\n\u003cli\u003e91.0mm\u003c\/li\u003e\n\u003cli\u003e92.0mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p2\"\u003eFor most naturally aspirated racing engines, we generally recommend bore sizes between 88mm and 90mm.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eLarger bores up to 92mm may be suitable depending on the intended application, cylinder pressure, machine work, cooling system, and overall engine combination.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eApproximate remaining wall thickness at a 92mm bore: \u003cb\u003e0.058”\u003c\/b\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eFeatures\u003c\/b\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003ePremium centrifugally cast ductile iron construction\u003c\/li\u003e\n\u003cli\u003eChromium-enhanced wear resistance\u003c\/li\u003e\n\u003cli\u003ePrecision CNC-machined dry sleeves\u003c\/li\u003e\n\u003cli\u003eIndividually inspected before packaging\u003c\/li\u003e\n\u003cli\u003eMatched four-cylinder sleeve sets\u003c\/li\u003e\n\u003cli\u003eExcellent ring seal characteristics\u003c\/li\u003e\n\u003cli\u003eDesigned for naturally aspirated, turbocharged, and supercharged applications\u003c\/li\u003e\n\u003cli\u003eProfessional engine machining recommended\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eProfessional Installation Recommended\u003c\/b\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp class=\"p2\"\u003eBK Racing recommends installation by an experienced performance machine shop.\u003c\/p\u003e\n\u003cp class=\"p4\"\u003eFor best results:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMeasure all components before machining.\u003c\/li\u003e\n\u003cli\u003eInstall sleeves using the proper interference fit.\u003c\/li\u003e\n\u003cli\u003eDeck the block after installation.\u003c\/li\u003e\n\u003cli\u003eFinish bore and torque plate hone to final size.\u003c\/li\u003e\n\u003cli\u003eVerify piston-to-wall clearance during assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p2\"\u003eAs with most high-performance racing sleeves, final machining should always be completed after installation.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eFor a detailed installation walkthrough, see our \u003cspan class=\"s1\"\u003e\u003cb\u003eHow to Install GM Ecotec Cylinder Sleeves\u003c\/b\u003e\u003c\/span\u003e guide.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eWhy Builders Choose BK Racing\u003c\/b\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp class=\"p2\"\u003eBK Racing products are developed through real-world GM Ecotec engine development and competitive racing experience. Every design decision - from material selection to machining tolerances - is focused on producing stronger, more reliable engines capable of surviving the demanding conditions of modern motorsports.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eWhen you’re investing thousands of dollars into an engine build, your cylinder block deserves a foundation engineered to the same standard.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eBuild a stronger foundation. Build it with BK Racing.\u003c\/b\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eLearn More About GM Ecotec Cylinder Sleeves\u003c\/b\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp class=\"p4\"\u003eBefore starting your build, explore our complete collection of technical resources:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGM Ecotec Cylinder Sleeve Guide\u003c\/li\u003e\n\u003cli\u003eWhy Sleeve an Ecotec Engine Block?\u003c\/li\u003e\n\u003cli\u003eChoosing the Right Bore Size\u003c\/li\u003e\n\u003cli\u003eStock vs. Sleeved Ecotec Blocks\u003c\/li\u003e\n\u003cli\u003eHow Ecotec Cylinder Sleeves Are Installed\u003c\/li\u003e\n\u003cli\u003eDry vs. Wet Cylinder Sleeves\u003c\/li\u003e\n\u003cli\u003eCommon Cylinder Sleeve Installation Mistakes\u003c\/li\u003e\n\u003cli\u003eHow Much Horsepower Can Stock Ecotec Sleeves Handle?\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BK Racing","offers":[{"title":"Default Title","offer_id":44115055771736,"sku":null,"price":649.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/9997\/9864\/files\/IMG_6968.jpg?v=1782403533","url":"https:\/\/bkracing.com\/products\/gm-ecotec-cylinder-sleeves","provider":"BK Racing","version":"1.0","type":"link"}