Kitaco 88cc STD Big Bore Kit with All-Aluminum Hard Chrome Cylinder (Part No. 215-1133101)
This kit is compatible with the following Honda models and frame number ranges:
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Monkey / Gorilla: Z50J-2000001～ and AB27-1000001～1899999
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Monkey Baja: Z50J-1700001～
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Dax 50 (12V): AB26
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Jazz: AC09
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Magna 50: AC13
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Chaly 50: CF50-3400001～
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CD50 / Benly 50S / Benly CL50: CD50-1500001～
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Super Cub 50 and variants (including Press Cub, Little Cub, Giorcub): Various C50 and AA01 frame ranges
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Solo: AC17
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XR50R / CRF50F: AE03
Note: For Monkey R/RT (AB22) models, the Kitaco Rocker Arm Set is required separately. This kit does not include a high camshaft (without camshaft version).
This premium 88cc STD Big Bore Kit 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.
Kit Contents & Performance Features
The 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.
Key specifications:
- Displacement: 88cc
- Bore: φ52mm
- Stroke: 41.4mm (uses stock crankshaft)
- Valves pre-installed in the cylinder head
- High-compression cast piston
- Aluminum cylinder (this version with hard chrome plating)
The Key Difference: All-Aluminum Hard Chrome Cylinder
This specific version (215-1133101) features Kitaco’s premium all-aluminum hard chrome cylinder. It differs from the standard aluminum cylinder versions, which use a traditional cast iron sleeve pressed into the bore.
Benefits of the Hard Chrome Cylinder:
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Superior durability and wear resistance: 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.
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Improved heat dissipation: 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.
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Reduced weight: Eliminating the iron sleeve lightens the cylinder assembly, contributing to a better power-to-weight ratio and sharper engine response.
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Smoother operation: The hard chrome surface provides excellent low-friction characteristics, promoting smoother piston travel, reduced internal drag, and improved sealing throughout the engine’s life.
This 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.
