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428-16T Front Engine Sprocket (20mm) for 50cc–140cc Pit Bike & ATV
428-16T Front Engine Sprocket (20mm) for 50cc–140cc Pit Bike & ATV
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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.
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Fitment FAQ
Will this part fit my specific model and year?
This replacement part is intended for 50cc–140cc Pit Bike & ATV. It is best matched to original part number(s) 428-16T. Key physical/spec details from the product data include 2-Bolt Pattern (34mm Spacing), Tooth Count: 16T (16 Teeth), 16T (16 Teeth). Use the compatibility table and product photos together before ordering.
Do I need to match the OEM part number?
Yes. Match your original part number to 428-16T before purchase. For this replacement part, also compare the OEM number, dimensions, connector or mounting style, engine/model year, and product photos.
What models or situations does this part not fit?
Do not order this replacement part for machines outside the listed compatibility, or for units with different OEM numbers, dimensions, mounting points, connectors, or year-specific configurations. If your original part number does not cross-reference with 428-16T, treat the fitment as unconfirmed. 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 OEM number, dimensions, connector or mounting style, engine/model year, and product photos. Confirm OEM/cross-reference number(s): 428-16T. Recheck listed specs such as 2-Bolt Pattern (34mm Spacing), Tooth Count: 16T (16 Teeth), 16T (16 Teeth). If any connector, mounting point, size, or year detail is different, confirm fitment before installation.
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