• 6-Tooth 25H Clutch Drum Gearbox Assembly for 2-Stroke 47cc 49cc Pocket Bike - goofitmoto
  • 6-Tooth 25H Clutch Drum Gearbox Assembly for 2-Stroke 47cc 49cc Pocket Bike - goofitmoto
  • 6-Tooth 25H Clutch Drum Gearbox Assembly for 2-Stroke 47cc 49cc Pocket Bike - goofitmoto
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GOOFIT

6-Tooth 25H Clutch Drum Gearbox Assembly for 2-Stroke 47cc 49cc Pocket Bike

6-Tooth 25H Clutch Drum Gearbox Assembly for 2-Stroke 47cc 49cc Pocket Bike

$14.99
$14.99
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Product Overview

Maximize your top-end velocity with this 6-Tooth 25H Clutch Drum Gearbox. Specifically engineered for 47cc and 49cc 2-stroke mini engines, this small-format gearbox is designed to help your engine achieve higher speeds and smoother acceleration curves. By replacing your standard housing with this precision-manufactured 6T unit, you ensure a more efficient transfer of power from the centrifugal clutch to the drive chain, making it an essential upgrade for pocket bike enthusiasts and mini-moto racers.

Product Compatibility

Component Specification
Engine Type 2-Stroke Air-Cooled (47cc / 49cc)
Chain Size 25H Chain
Sprocket Teeth 6T (6-Teeth)
Segment Spacing (Pitch) 6.3mm (0.24")
Common Models MTA1, MTA2, Cagllari, Mini Pocket Dirt Bikes, Quads

Specifications

Feature Details
Gearbox Type Small 6-Tooth Clutch Drum
Chain Pitch 6.3mm (0.24")
Compatibility 25H High-Strength Chain
Material High-Grade Corrosion-Resistant Alloy
Performance High-Speed Optimized

Key Features

  • High-Speed Gear Ratio: The 6-tooth configuration is specifically tuned to allow small-displacement engines to reach higher top speeds while maintaining a smooth, linear acceleration profile.
  • Precision 25H Alignment: Features a 6.3mm segment spacing (pitch) perfectly matched for 25H chains, reducing friction and preventing chain binding during high-RPM operation.
  • Durable Alloy Construction: Made from high-quality, corrosion-resistant materials, this gearbox is built to withstand the intense heat and vibration of 2-stroke racing without warping or rusting.
  • Stable Performance: Precision manufacturing ensures the clutch drum is perfectly balanced, providing consistent contact with the clutch pads for a stable, "no-slip" drive experience.
  • Direct Replacement Fit: Designed as a drop-in replacement for standard 47cc/49cc small gearboxes, making it a quick and effective performance upgrade for your mini-moto drivetrain.
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Fitment FAQ

Will this part fit my specific model and year?

This clutch assembly is intended for 2-Stroke 47cc 49cc Pocket Bike. Key physical/spec details from the product data include Chain Size: 25H Chain, Sprocket Teeth: 6T (6-Teeth), 6T (6-Teeth). Use the compatibility table and product photos together before ordering.

Do I need to match the OEM part number?

Yes. If your original part has a stamped OEM or manufacturer number, match that number first before ordering. For this clutch assembly, also compare the spline count, clutch bell diameter, pulley diameter, spring style, belt width, and engine platform.

What models or situations does this part not fit?

Do not order this clutch assembly for machines outside the listed compatibility, or for units with different spline counts, clutch-bell sizes, pulley diameters, or engine platforms. Do not rely only on the model name or engine size.

What should I check before ordering?

Before ordering, compare your original part with the photos and check the spline count, clutch bell diameter, pulley diameter, spring style, belt width, and engine platform. Recheck listed specs such as Chain Size: 25H Chain, Sprocket Teeth: 6T (6-Teeth), 6T (6-Teeth). If any connector, mounting point, size, or year detail is different, confirm fitment before installation.