Restore the snap and reliability of your drivetrain with the Universal Parts Type-3 Gearbox Transmission. Specifically engineered for 47cc and 49cc air-cooled 2-stroke engines, this "Cag-style" transmission acts as a direct-fit replacement for worn or grinding factory gearboxes. Whether you're refreshing a pit bike or building a custom pocket quad, this gearbox ensures your engine's torque is efficiently delivered to the ground with minimal friction and maximum durability.
Key Performance Features
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Optimized 6-Tooth Sprocket: Pre-installed with a high-tensile 6-tooth drive sprocket, perfect for maintaining high-end speed on small-displacement racing engines.
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Chain Compatibility: Fully compatible with T8F / BF05T chain standards, the most common sizes for import pocket bikes and quads.
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Precision 78mm Clutch Drum: Features a balanced internal drum design that matches standard 3-shoe centrifugal clutches for smooth engagement and reduced heat build-up.
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Direct Bolt-On Fit: Designed as a "drop-in" assembly with standard mounting patterns, requiring zero modifications to your Cag or Daytona-style frame.
Comprehensive Fitment Guide
This Type-3 Gearbox is a direct replacement for 47cc and 49cc 2-Stroke engines used in:
| Vehicle Category |
Common Compatible Styles |
| Pocket Bikes |
Cagllari CAG, Daytona, MTA1, MTA2, Lucky 7 |
| Pocket Quads / ATVs |
47cc / 49cc Mini Quads & Dirt Bikes |
| Go-Karts |
Small-frame 2-stroke "Stand-up" Goped-style karts |
Specifications
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Type: Type-3 Gearbox Transmission
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Sprocket Size: 6-Tooth
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Clutch Drum ID: 78mm
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Overall Height: 57mm
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Material: Cast Aluminum Housing / Steel Internals
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Chain Size: T8F or BF05T
Installation Tip: When installing, ensure your chain tension has roughly 1/2 inch of "play" to prevent premature wear on the gearbox output shaft bearings.
About Universal Parts
Universal Parts is a comprehensive line of quality, affordable replacement parts for Chinese-made scooters, pocket bikes, and ATVs. From basic consumables to complete drivetrain assemblies, Universal Parts offers reliable solutions to keep your ride running.
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