T8F 11-Tooth Transmission Gearbox (Single Chain) for 33cc–49cc 2-Stroke Mini ATV & Pocket Bike

Product Overview

Restore the torque and drive of your mini-vehicle with the T8F 11-Tooth Sprocket Gearbox. This transmission reduction unit is essential for converting high engine RPMs from 33cc–49cc 2-stroke motors into consistent power for the wheels. Designed for a single-chain setup, the 11-tooth sprocket provides a balanced gear ratio that favors stronger low-end torque and smooth acceleration. Made from high-grade aluminum alloy, this gearbox offers a lightweight yet rugged housing that protects the internal drive system while ensuring peak performance on pocket bikes, buggies, and mini-ATVs.

Product Compatibility

Component Type	Specification
Engine Type	2-Stroke (Air-Cooled)
Displacement	33cc, 34cc, 47cc, 49cc
Chain Type	T8F Only (8mm pitch)
Vehicle Types	Pocket Bikes, Mini Dirt Bikes, Mini ATVs, Buggies, Go-Karts
Engine Fitment	Standard "Pocket Rocket" style 2-stroke engines

Specifications

Feature	Details
Tooth Count	11-Tooth Sprocket
Chain System	Single Chain Drive
Total Length	19.7cm (7.57")
Mounting Hole Pitch	70mm (2.75") center-to-center
Material	Durable Aluminum Alloy

Key Features

• Balanced Power Ratio: The 11-tooth sprocket is designed to provide excellent low-to-mid range torque, making it perfect for quick take-offs and consistent climbing on mini-ATVs and dirt bikes.
• T8F Chain Precision: Optimized exclusively for T8F (8mm) chains to ensure a perfect tooth-to-link mesh, which minimizes the risk of chain slippage and noise during high-speed runs.
• Heavy-Duty Aluminum Alloy: The housing is cast from premium aluminum to maximize heat dissipation and resist corrosion while remaining light enough to maintain vehicle agility.
• Smooth Transmission Flow: Precision-aligned internal gears allow for a more fluid power transfer from the clutch to the drive chain, resulting in a more responsive throttle feel.
• Universal 70mm Mount: Features the industry-standard 70mm bolt pattern, allowing for a direct, "no-drill" installation on most Chinese-manufactured 2-stroke mini-motors.