428-16T Front Engine Sprocket (20mm) for 50cc–140cc Pit Bike & ATV

Product Overview

Take your drivetrain to the next level with the 428-16T Precision Front Sprocket. Specifically designed for engines with a 20mm output shaft, this 16-tooth gear is the ultimate performance upgrade for riders looking to maximize top-end speed and smooth out power delivery. Precision-forged from high-strength steel and hardened for extreme durability, it ensures a rock-solid connection for your dirt bike, ATV, or go-kart, even under the most demanding racing conditions.

Product Compatibility

Component Type	Specification
Engine Displacement	50cc, 110cc, 125cc, 140cc
Vehicle Types	Dirt Bikes, ATVs, Go Karts, Quads, Pit Bikes, Buggies
Chain Pitch	428 (Heavy Duty)
Shaft Fitment	20mm Countershaft
Mounting Style	2-Bolt Pattern (34mm Spacing)

Specifications

Feature	Details
Tooth Count	16T (16 Teeth)
Inner Diameter	20mm (0.78")
Mounting Hole Distance	34mm (1.33") center-to-center
Chain Style	428 Style
Material	Precision Forged High-Strength Steel
Surface Finish	Hardened Wear-Resistant Coating

Key Features

• Optimized Speed & Acceleration: The 16-tooth geometry is precision-calculated to provide a significant boost to your top speed while maintaining a crisp, responsive acceleration profile.
• Precision Forged Construction: Forged from high-strength steel rather than stamped, this sprocket offers superior structural integrity and the ability to withstand heavy torque loads from 140cc engines.
• Hardened Wear Resistance: The surface is specialized-hardened to resist impact and abrasion, effectively reducing chain runout (side-to-side movement) and extending the life of your entire drive system.
• Stable Power Transmission: Engineered to provide a seamless mesh with 428 chains, this sprocket ensures smooth power transfer from the engine to the wheels, significantly enhancing the overall riding experience.
• Rugged Quality Control: Each unit undergoes strict factory testing to ensure it meets high standards for durability, allowing it to withstand harsh weather, mud, and extreme environmental impacts without failure.