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54mm Big Bore Cylinder Piston Kit for C90 C110 152FMH 125cc
54mm Big Bore Cylinder Piston Kit for C90 C110 152FMH 125cc
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Product Overview
Replace a worn or damaged top-end assembly with this 54mm cylinder and piston kit, designed for compatible C90, C100, C110, CT100, JH90/JH110, DY110, QJ110-9, ZS110, and 152FMH-style engines.
The kit features a 54mm piston bore and 14mm piston pin, making it suitable for selected horizontal 4-stroke motorcycle, ATV, dirt bike, pit bike, and go-kart engines with matching dimensions.
Fitment should be confirmed by the bore size, piston-pin diameter, cylinder mounting pattern, and original engine configuration.
Product Compatibility
| Engine / Model | Fitment Notes |
|---|---|
| C90 / JH90 | Selected compatible engine configurations |
| C100 | Verify cylinder and piston dimensions |
| C110 | Match 54mm bore and mounting pattern |
| CT100 | Dimension-based fitment |
| JH110 | Verify original cylinder configuration |
| DY110 | Compare piston and mounting dimensions |
| QJ110-9 | Selected compatible models |
| ZS110 | Verify engine configuration |
| 152FMH | Compatible 54mm / 14mm pin applications |
| ATV / Pit Bike / Dirt Bike / Go Kart | Matching horizontal engine required |
Specifications
| Specification | Details |
| Product Type | Cylinder & Piston Rebuild Kit |
| Cylinder Material | Iron |
| Bore / Piston Diameter | Approx. 54 mm / 2.13 in |
| Mounting Hole Spacing | Approx. 72 mm / 2.83 in & 51 mm / 2.01 in |
| Mounting Hole Diameters | Approx. 10 mm / 7 mm / 8 mm |
| Piston Pin Outer Diameter | Approx. 14 mm / 0.55 in |
| Piston Pin Inner Diameter | Approx. 9 mm / 0.35 in |
| Piston Pin Length | Approx. 41 mm / 1.61 in |
| Engine Type | Horizontal 4-Stroke |
| Application | Motorcycle / ATV / Pit Bike / Dirt Bike / Go Kart |
| Condition | New |
Key Features
- 54mm Cylinder Bore: Designed for compatible horizontal-engine top-end assemblies.
- 14mm Piston Pin: Matches selected 125cc / 152FMH-style piston configurations.
- Complete Rebuild Solution: Suitable for replacing worn cylinder, piston, and ring components.
- Iron Cylinder Construction: Designed for durable everyday engine use.
- Multiple Applications: Suitable for compatible motorcycles, ATVs, dirt bikes, pit bikes, and go-karts.
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Fitment FAQ
Will this part fit my specific model and year?
This kit is designed for selected C90, C100, C110, CT100, JH90/JH110, DY110, QJ110-9, ZS110, and 152FMH-style engines.
Model name alone does not guarantee compatibility. Compare the 54mm bore, 14mm piston pin, mounting-hole spacing, and cylinder shape before ordering.
Do I need to match the OEM part number?
No specific OEM number is required.
Fitment should primarily be confirmed by:
54mm piston / cylinder bore
14mm piston pin
Cylinder mounting pattern
Engine configuration
Product dimensions
What models or situations does this part not fit?
This kit is not suitable for:
Engines requiring a different bore size
Pistons using a different pin diameter
GY6 scooter-style vertical/CVT engines
Engines with incompatible cylinder-stud spacing
Applications using a different cylinder height or mounting pattern
What should I check before ordering?
Confirm:
Original bore is compatible with 54mm
Piston pin diameter is 14mm
Pin length is approximately 41mm
Mounting-hole spacing matches 72mm / 51mm references
Cylinder base and head mounting pattern match
Product photos match your original top-end assembly