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47mm Piston Ring Kit for 70cc 90cc 4-Stroke Horizontal Engine ATV Pit Bike
47mm Piston Ring Kit for 70cc 90cc 4-Stroke Horizontal Engine ATV Pit Bike
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Product Overview
Restore compression and reliable engine performance with this 47mm piston ring kit, designed for select 70cc and 90cc 4-stroke horizontal engines commonly used in ATVs, pit bikes, dirt bikes, quads, scooters, and other small recreational vehicles.
Featuring a 47 mm piston diameter and 13 mm piston pin, this kit is suitable for many Honda-style horizontal engine applications and is designed as a replacement option for compatible Lifan 70cc/90cc engines and Baja WD90 90cc ATV applications.
Product Compatibility
| Application | Engine / Model | Fitment Notes |
|---|---|---|
| ATV / Quad | 70cc Horizontal 4-Stroke | Verify 47 mm bore and 13 mm pin |
| ATV / Quad | 90cc Horizontal 4-Stroke | Verify piston dimensions |
| Pit Bike | 70cc / 90cc Horizontal Engine | Common Chinese-style engines |
| Dirt Bike | 70cc / 90cc Horizontal Engine | Verify original piston |
| Scooter / Mini Bike | Select 70cc / 90cc Engines | Horizontal 4-stroke applications |
| Lifan | 70cc / 90cc Horizontal Engine | Selected 47 mm piston applications |
| Baja | WD90 Wilderness 90cc ATV | Verify dimensions before ordering |
Common Applications
Designed for many Chinese 70cc and 90cc horizontal 4-stroke engines used by various ATV, quad, pit bike, dirt bike, scooter, and recreational vehicle manufacturers.
Important: Engine displacement alone is not enough to confirm fitment. Different 70cc or 90cc engines may use different piston diameters, pin sizes, piston heights, compression heights, or piston crown designs.
Always compare your original piston with the measurements below before ordering.
Specifications
| Specification | Details |
|---|---|
| Product Type | Piston Ring Kit |
| Engine Type | Horizontal 4-Stroke |
| Compatible Displacement | Select 70cc / 90cc |
| Piston Diameter | 47 mm / 1.85 in |
| Piston Height | 40 mm / 1.57 in |
| Piston Pin Diameter | 13 mm / 0.51 in |
| Piston Pin Length | 38 mm / 1.49 in |
| Application | ATV / Pit Bike / Dirt Bike / Quad / Scooter |
| Baja Application | WD90 90cc ATV |
| Installation | Engine Top-End Replacement |
Key Features
- 47mm Piston Diameter – Designed for compatible 70cc and 90cc horizontal 4-stroke engines using a 47 mm bore.
- 13mm Piston Pin – Includes the common 13 mm wrist-pin specification used on many small horizontal engines.
- Ideal for Top-End Repair – Suitable for replacing a worn or damaged piston during engine rebuilding or compression repair.
- Wide Small-Engine Application – Suitable for many ATVs, pit bikes, dirt bikes, quads, scooters, and other vehicles using compatible horizontal engines.
- Easy Fitment Verification – Clearly specified piston and pin dimensions help you compare the replacement with your original parts before ordering.
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