GOOFIT
428-13T Front Engine Sprocket (17mm) for 50cc–160cc Dirt Pit Bike & ATV
428-13T Front Engine Sprocket (17mm) for 50cc–160cc Dirt Pit Bike & ATV
Couldn't load pickup availability
Product Overview
Optimize your drivetrain with the 428-13T Heavy-Duty Front Sprocket, designed for riders who demand a balance of quick acceleration and steady mid-range power. Engineered for the robust 428-series chain, this 13-tooth sprocket is a direct fit for 17mm countershafts common on most 50cc to 160cc engines. With high machining accuracy and excellent thermal stability, it ensures smooth power delivery and consistent performance even under high-temperature, off-road conditions.
Product Compatibility
| Component Type | Specification |
| Engine Displacement | 50cc, 70cc, 110cc, 125cc, 140cc, 160cc |
| Vehicle Types | Dirt Pit Bikes, Mini Bikes, ATVs, 4-Wheelers, Motorcycles |
| Chain Pitch | 428 (Heavy Duty) |
| Shaft Fitment | 17mm Countershaft |
| Common Brands | Apollo, SSR, Coolster, TaoTao, Piranha, YX |
Specifications
| Feature | Details |
| Tooth Count | 13T (13 Teeth) |
| Shaft Diameter | 17mm |
| Gear Inner Diameter | 14mm (0.55") |
| Outer Diameter | 57mm (2.24") |
| Mounting Hole Spacing | 30mm (1.18") center-to-center |
| Chain Size | 428 |
Key Features
- Balanced Gearing Ratio: The 13-tooth configuration offers the "sweet spot" for 428 chain setups, providing enough torque for hill climbing while maintaining a smooth top-end speed.
- Superior Thermal Stability: Engineered to resist high-temperature oxidation, this sprocket maintains its structural integrity and hardness during long, intense rides on air-cooled engines.
- Precision Machining Accuracy: Manufactured to strict tolerances to ensure a perfect seat on the 17mm output shaft, reducing mechanical vibration and protecting your engine’s internal components.
- High Wear Resistance: Crafted from high-strength steel designed to withstand the abrasive grit of off-road environments, significantly extending the time between drivetrain maintenance.
- Universal 30mm Mounting: Features the industry-standard 30mm mounting hole spacing, making it compatible with almost all 17mm shaft locking plates and bolt kits used on Chinese pit bikes and ATVs.
Share
Fitment FAQ
Will this part fit my specific model and year?
This replacement part is intended for 50cc–160cc Dirt Pit Bike & ATV. It is best matched to original part number(s) 428-13T. Key physical/spec details from the product data include Tooth Count: 13T (13 Teeth), 13T (13 Teeth), Shaft Diameter: 17mm. 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 428-13T 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 428-13T, 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): 428-13T. Recheck listed specs such as Tooth Count: 13T (13 Teeth), 13T (13 Teeth), Shaft Diameter: 17mm. If any connector, mounting point, size, or year detail is different, confirm fitment before installation.