{"product_id":"kitaco-88cc-big-bore-up-kit-chrome-cylinder-version-suitable-for-use-with-z50j-12v-st50-dax-12v","title":"Kitaco 88cc BIG Bore-Up Kit *Chrome Cylinder Version* suitable for use with Z50J 12V, ST50 Dax 12V","description":"\u003cp dir=\"auto\"\u003e\u003cstrong\u003eKitaco 88cc STD Big Bore Kit with All-Aluminum Hard Chrome Cylinder (Part No. 215-1133101)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis kit is compatible with the following Honda models and frame number ranges:\u003c\/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eMonkey \/ Gorilla\u003c\/strong\u003e: Z50J-2000001～ and AB27-1000001～1899999\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMonkey Baja\u003c\/strong\u003e: Z50J-1700001～\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDax 50 (12V)\u003c\/strong\u003e: AB26\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJazz\u003c\/strong\u003e: AC09\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagna 50\u003c\/strong\u003e: AC13\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChaly 50\u003c\/strong\u003e: CF50-3400001～\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCD50 \/ Benly 50S \/ Benly CL50\u003c\/strong\u003e: CD50-1500001～\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuper Cub 50\u003c\/strong\u003e and variants (including Press Cub, Little Cub, Giorcub): Various C50 and AA01 frame ranges\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolo\u003c\/strong\u003e: AC17\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eXR50R \/ CRF50F\u003c\/strong\u003e: AE03\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eNote\u003c\/strong\u003e: For Monkey R\/RT (AB22) models, the Kitaco Rocker Arm Set is required separately. This kit does \u003cstrong\u003enot\u003c\/strong\u003e include a high camshaft (without camshaft version).\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis premium \u003cstrong\u003e88cc STD Big Bore Kit\u003c\/strong\u003e from Kitaco is designed for later-model Honda Monkey, Gorilla, Dax, Chaly, Cub, and compatible 50cc engines. It provides strong, usable power and torque gains across the entire RPM range while maintaining excellent street manners and reliability for daily riding.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eKit Contents \u0026amp; Performance Features\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eThe kit includes a new STD-type cylinder head with an optimized combustion chamber, high-efficiency port shapes, larger valves, and a high-compression cast piston. These upgrades significantly improve airflow and combustion efficiency, delivering noticeably stronger performance than a stock engine across low, mid, and high RPMs.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eKey specifications:\u003c\/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eDisplacement: 88cc\u003c\/li\u003e\n\u003cli\u003eBore: φ52mm\u003c\/li\u003e\n\u003cli\u003eStroke: 41.4mm (uses stock crankshaft)\u003c\/li\u003e\n\u003cli\u003eValves pre-installed in the cylinder head\u003c\/li\u003e\n\u003cli\u003eHigh-compression cast piston\u003c\/li\u003e\n\u003cli\u003eAluminum cylinder (this version with hard chrome plating)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"auto\"\u003eThe Key Difference: All-Aluminum Hard Chrome Cylinder\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eThis specific version (215-1133101) features Kitaco’s premium \u003cstrong\u003eall-aluminum hard chrome cylinder\u003c\/strong\u003e. It differs from the standard aluminum cylinder versions, which use a traditional cast iron sleeve pressed into the bore.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eBenefits of the Hard Chrome Cylinder:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior durability and wear resistance\u003c\/strong\u003e: The hard chrome plating is applied directly to the aluminum bore, creating an extremely hard, low-friction surface. This greatly reduces wear from the piston rings compared to a conventional cast iron sleeve, resulting in longer engine life and better performance retention over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved heat dissipation\u003c\/strong\u003e: Full aluminum construction (without a heavy iron sleeve) transfers heat away from the combustion chamber more efficiently. This helps the engine run cooler — a major advantage for air-cooled bikes during longer rides or in warmer conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced weight\u003c\/strong\u003e: Eliminating the iron sleeve lightens the cylinder assembly, contributing to a better power-to-weight ratio and sharper engine response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmoother operation\u003c\/strong\u003e: The hard chrome surface provides excellent low-friction characteristics, promoting smoother piston travel, reduced internal drag, and improved sealing throughout the engine’s life.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003eThis kit is an excellent choice for owners seeking a reliable and powerful 88cc upgrade with the added longevity and performance benefits of the premium hard chrome cylinder. For best results, we recommend using high-quality engine oil, proper carburetor jetting (and a high camshaft if desired for even smoother delivery), and following proper break-in procedures. Professional installation is advised, and always verify exact compatibility with your model and year.\u003c\/p\u003e","brand":"Kitaco","offers":[{"title":"Default Title","offer_id":58195083657603,"sku":"215-1133101","price":325.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0202\/7464\/files\/215-1133101.jpg?v=1780752790","url":"https:\/\/www.shirebikes.co.uk\/products\/kitaco-88cc-big-bore-up-kit-chrome-cylinder-version-suitable-for-use-with-z50j-12v-st50-dax-12v","provider":"Shire Bikes - Parts \u0026 Accessories suitable for Monkey Bikes","version":"1.0","type":"link"}