{"product_id":"top-end-cylinder-kit-50cc-for-honda-z50-r-z50a-minitrail-50-monkey-crf50f-xr50r","title":"Top End Cylinder Kit 50cc For HONDA Z50 R Z50A Minitrail 50 Monkey CRF50F XR50R","description":"\u003ch2\u003e50cc Top End Cylinder Kit for Honda\u003c\/h2\u003e\u003cp\u003eThis complete engine top-end rebuild kit restores compression and power to compatible 50cc small displacement utility bikes and trail motorcycles.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis 50cc top end cylinder kit contains the essential components needed to rebuild your engine's upper chamber and restore original combustion efficiency. Ideal for mechanics and DIY restorers, this rebuild kit is engineered to restore smooth operation to vintage and modern trail bikes. Installing a reliable 50cc top end cylinder kit helps resolve low compression issues and smoking exhausts.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCylinder barrel cast from high-grade iron alloy for thermal stability and wear resistance.\u003c\/li\u003e\n\u003cli\u003ePrecision-machined piston matches original clearance specifications for optimal compression.\u003c\/li\u003e\n\u003cli\u003eIncludes high-temperature gaskets to prevent oil and combustion leaks.\u003c\/li\u003e\n\u003cli\u003ePiston rings engineered for low friction and consistent oil scraping.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Honda Z50R\u003c\/li\u003e\n\u003cli\u003efor Honda Z50A\u003c\/li\u003e\n\u003cli\u003efor Honda Minitrail 50\u003c\/li\u003e\n\u003cli\u003efor Honda Monkey\u003c\/li\u003e\n\u003cli\u003efor Honda CRF50F\u003c\/li\u003e\n\u003cli\u003efor Honda XR50R\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRebuilding worn or seized 50cc engines during routine off-road vehicle restoration.\u003c\/li\u003e\n\u003cli\u003eReplacing scratched cylinder walls and worn rings to eliminate exhaust smoke.\u003c\/li\u003e\n\u003cli\u003eRestoring original compression and starting reliability to trail motorcycles.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplacement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50cc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCylinder Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCast Iron \/ Aluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard 39mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this kit require modifications to my engine crankcase? \u003cstrong\u003eA:\u003c\/strong\u003e No, this kit is designed to match standard factory dimensions for a drop-in installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Should I lubricate the piston and rings during installation? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, applying a thin coat of clean engine oil to the piston, rings, and cylinder wall is recommended before assembly.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":44788975075414,"sku":"SZ1E04023","price":284.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/57_d23708a4-4033-4186-96d0-c2e85669f260.jpg?v=1779936303","url":"https:\/\/www.solidspare.com\/products\/top-end-cylinder-kit-50cc-for-honda-z50-r-z50a-minitrail-50-monkey-crf50f-xr50r","provider":"Solid Spare","version":"1.0","type":"link"}