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420-15T Front Engine Sprocket (17mm) for 50cc–160cc Pit Bike, ATV, & Go Kart
420-15T Front Engine Sprocket (17mm) for 50cc–160cc Pit Bike, ATV, & Go Kart
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Product Overview
Achieve a smoother ride and higher top speeds with the 420-15T High-Speed Front Sprocket. Engineered for 17mm countershafts, this 15-tooth sprocket is the ultimate choice for riders looking to reduce high-RPM engine vibration and increase cruising efficiency. Built from premium high-strength steel and treated for maximum environmental resistance, it provides a stable, long-lasting connection between your engine and the drive chain, even under the most demanding off-road conditions.
Product Compatibility
| Component Type | Specification |
| Engine Displacement | 50cc, 70cc, 110cc, 125cc, 140cc, 160cc |
| Vehicle Types | Dirt Pit Bikes, Go Karts, ATVs, Buggies, Off-Road Vehicles |
| Chain Pitch | 420 |
| Shaft Diameter | 17mm Countershaft |
| Common Brands | TaoTao, SSR, Apollo, Lifan, YX, Zongshen |
Specifications
| Feature | Details |
| Tooth Count | 15T (15 Teeth) |
| Shaft Diameter | 17mm (0.67") |
| Mounting Hole Spacing | 30mm (1.18") center-to-center |
| Chain Style | 420 |
| Material | Heat-Treated Premium High-Strength Steel |
| Finish | Anti-Rust & Corrosion Resistant Coating |
Key Features
- High-Speed Gearing: The 15-tooth design increases your gear ratio, making it ideal for road cruising or open-trail riding where higher top-end speed and lower engine RPM are desired.
- Premium Heat Treatment: Subjected to rigorous hardening processes, this sprocket offers exceptional surface hardness to withstand high tensile stress and prevent tooth rounding.
- All-Weather Protection: Features a specialized surface treatment that delivers outstanding resistance to rust and corrosion, protecting the sprocket from rainwater, mud, and silt erosion.
- Precision Mechanical Fit: CNC-machined to ensure exact tooth spacing for 420 chains, reducing "chain slap" and ensuring smooth engagement during high-speed operation.
- High-Stability Construction: The robust steel build ensures the sprocket remains stable and true under harsh road conditions, significantly reducing the maintenance costs and hassle of frequent replacements.
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Fitment FAQ
Will this part fit my specific model and year?
This replacement part is intended for 50cc–160cc Pit Bike, ATV, & Go Kart. It is best matched to original part number(s) 420-15T. Key physical/spec details from the product data include Shaft Diameter: 17mm Countershaft, Tooth Count: 15T (15 Teeth), 15T (15 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 420-15T 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 420-15T, 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): 420-15T. Recheck listed specs such as Shaft Diameter: 17mm Countershaft, Tooth Count: 15T (15 Teeth), 15T (15 Teeth). If any connector, mounting point, size, or year detail is different, confirm fitment before installation.