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428-12T Front Engine Sprocket (20mm) for High-Torque Motorcycle, ATV, & Dirt Bike
428-12T Front Engine Sprocket (20mm) for High-Torque Motorcycle, ATV, & Dirt Bike
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Product Overview
Take control of your vehicle's power delivery with the 428-12T Performance Front Sprocket. Specifically designed for the larger 20mm output shaft, this 12-tooth sprocket is the ideal upgrade for riders who need maximum low-end torque for trail riding, climbing, and heavy-duty hauling. Engineered for the thicker 428-series chain, this sprocket ensures a robust connection between your engine and rear wheel, providing the durability needed for high-stress off-road environments.
Product Compatibility
| Component Type | Specification |
| Vehicle Types | Dirt Pit Bikes, ATVs, Quads, Off-Road Motorcycles |
| Engine Fitment | Engines with 20mm Countershafts |
| Chain Pitch | 428 (Heavy Duty) |
| Engine Displacement | Typically 125cc, 140cc, 150cc, 160cc, 200cc, 250cc |
| Installation | Direct Bolt-On Replacement |
Specifications
| Feature | Details |
| Tooth Count | 12T (12 Teeth) |
| Inner Diameter | 20mm (0.78") |
| Chain Style | 428 Style |
| Material | Hot-Treated High-Strength Steel |
| Technology | Precision Processing for Silent Operation |
| Included Accessories | Locking Plate (Holder) and Mounting Bolts |
Key Features
- Extreme Low-End Torque: The 12-tooth design provides a high mechanical advantage, making it much easier to pull through mud, climb steep inclines, and achieve quick acceleration from a standstill.
- Precision Processing Technology: Manufactured with advanced machining techniques to ensure a perfect tooth profile. This improves transmission efficiency and results in a significantly more silent drive system with less vibration.
- Hot-Treated Steel Construction: The steel is subjected to a specialized heat-treatment process to increase hardness and wear resistance, ensuring the sprocket remains durable under extreme loads and high-heat operation.
- Complete Installation Kit: This sprocket comes with all necessary accessories, including the retainer plate and bolts, allowing for a direct installation with no additional tools required.
- Enhanced Drive Stability: Designed specifically for the 428 chain, the wider tooth profile provides a more stable interface, reducing the risk of chain derailment or "jumping" during aggressive riding.
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Fitment FAQ
Will this part fit my specific model and year?
This replacement part is intended for High-Torque Motorcycle, ATV, & Dirt Bike. It is best matched to original part number(s) 428-12T. Key physical/spec details from the product data include Tooth Count: 12T (12 Teeth), 12T (12 Teeth), Inner Diameter: 20mm (0.78"). 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 428-12T 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 428-12T, 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): 428-12T. Recheck listed specs such as Tooth Count: 12T (12 Teeth), 12T (12 Teeth), Inner Diameter: 20mm (0.78"). If any connector, mounting point, size, or year detail is different, confirm fitment before installation.