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2-Stroke Engine Kit with Carburetor Recoil Starter for 43cc–52cc Pocket Bike
2-Stroke Engine Kit with Carburetor Recoil Starter for 43cc–52cc Pocket Bike
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Product Overview
Replacement 2-stroke horizontal engine kit for selected 43cc, 47cc, 49cc, and 52cc mini pocket bikes, pit bikes, gas scooters, and similar small powersports applications.
The assembly includes a 7-tooth gearbox, recoil starter, carburetor, air filter, and related engine components, providing a practical replacement for compatible mini 2-stroke engine configurations.
Listed applications include selected SYX Moto 50cc Pit Bike, SSR SX50, 2016 Coolster 49cc Pit Bike, and similar Chinese-style mini vehicles.
Before ordering, compare the engine mounting-hole spacing, gearbox sprocket, engine orientation, throttle cable, intake/exhaust configuration, and overall dimensions with the original engine.
Product Compatibility
| Make / Vehicle | Listed Engine | Fitment Notes |
|---|---|---|
| SYX Moto Pit Bike | 50cc | Selected compatible configurations |
| SSR SX50 | 50cc Class | Verify engine and mounting pattern |
| Coolster Pit Bike | 49cc | Listed 2016 application; verify dimensions |
| Mini Pocket Bike | 43cc–52cc | Selected horizontal 2-stroke configurations |
| Mini Pit Bike | 43cc–52cc | Verify mounting points and drivetrain |
| Gas Scooter / Moped | 43cc–52cc | Physical comparison required |
Generic Engine Applications
Listed for selected:
43cc / 47cc / 49cc / 52cc air-cooled 2-stroke horizontal engine applications
Engine displacement alone does not guarantee compatibility. Mini-bike engines that look similar can use different mounting points, gearbox ratios, sprockets, intake systems, exhaust ports, and throttle connections.
Specifications
| Specification | Details |
|---|---|
| Product Type | 2-Stroke Engine Replacement Kit |
| Engine Configuration | Horizontal |
| Cooling Type | Air-Cooled |
| Engine Cycle | 2-Stroke |
| Listed Engine Range | 43cc / 47cc / 49cc / 52cc |
| Gearbox Sprocket | 7-Tooth |
| Listed Mounting Hole Spacing | Approx. 65 mm / 2.56 in |
| Listed Mounting Hole Spacing | Approx. 55 mm / 2.17 in |
| Listed Mounting Hole Spacing | Approx. 38 mm / 1.50 in |
| Bolt Hole Diameter | Approx. 5 mm / 0.20 in |
| Throttle Cable Total Length | Approx. 1140 mm / 44.88 in |
| Throttle Cable Travel | Approx. 140 mm / 5.51 in |
| Main Material | Aluminum Alloy |
| Color | Silver |
| Starting Method | Recoil / Pull Start |
| Condition | New |
Key Features
- 2-Stroke Mini Engine Kit: Designed for selected 43cc–52cc mini powersports applications.
- 7-Tooth Gearbox: Includes a 7T output sprocket configuration for compatible drivetrains.
- Recoil Starting System: Pull-start assembly provides manual engine starting.
- Intake Components Included: Carburetor and air filter are included for a matching engine configuration.
- Multiple Fitment References: Mounting-hole spacing and throttle-cable dimensions help verify compatibility before ordering.
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Preguntas frecuentes sobre compatibilidad
¿Esta pieza es compatible con mi modelo y año específicos?
This engine kit is listed for selected 43cc, 47cc, 49cc, and 52cc mini pocket bikes, pit bikes, and gas scooters, including applications such as SYX Moto 50cc Pit Bike, SSR SX50, and 2016 Coolster 49cc Pit Bike.
Because these vehicles can use different engine versions, confirm the physical dimensions and drivetrain configuration before ordering.
¿Necesito que coincida el número de pieza OEM?
No OEM part number is provided for this generic replacement engine kit.
For this product, physical specifications are more important. Compare the:
Engine mounting pattern
65mm / 55mm / 38mm listed mounting spacing
5mm mounting-hole diameter
7-tooth gearbox sprocket
Engine orientation
Intake and exhaust layout
Throttle connection
Recoil starter position
Original engine appearance
¿Qué modelos o situaciones no son compatibles con esta pieza?
Do not assume this engine fits:
Every 43cc–52cc mini bike
Every 49cc or 50cc pit bike
4-stroke engines
Liquid-cooled engines
Engines with different mounting patterns
Applications requiring a different gearbox sprocket
Vehicles with incompatible chain alignment
Engines with different intake or exhaust configurations
Vehicles where the recoil starter or carburetor cannot clear the frame
Displacement alone is not enough to confirm fitment.
¿Qué debo verificar antes de hacer un pedido?
Confirm:
Air-cooled 2-stroke engine
Horizontal engine configuration
Engine mounting-hole pattern
Listed 65mm / 55mm / 38mm mounting spacing
Approx. 5mm bolt-hole diameter
7-tooth gearbox sprocket
Chain size and alignment
Intake and exhaust configuration
Carburetor position
Recoil starter clearance
Fuel-line arrangement
Throttle connection
Approx. 1140mm throttle cable length
Original engine appearance
Compare the product dimensions and photos directly with the existing engine before purchase.