• 428-19T Front Engine Sprocket (20mm) for 50cc–90cc Pit Bike & ATV - goofitmoto
  • 428-19T Front Engine Sprocket (20mm) for 50cc–90cc Pit Bike & ATV - goofitmoto
  • 428-19T Front Engine Sprocket (20mm) for 50cc–90cc Pit Bike & ATV - goofitmoto
1 3

GOOFIT

428-19T Front Engine Sprocket (20mm) for 50cc–90cc Pit Bike & ATV

428-19T Front Engine Sprocket (20mm) for 50cc–90cc Pit Bike & ATV

$12.99
$12.99
Sale Sold out
Shipping calculated at checkout.

Product Overview

Maximize your top-end potential with the 428-19T High-Performance Front Sprocket. Specifically designed for engines with a 20mm output shaft, this 19-tooth sprocket is the ultimate "high-speed" gearing upgrade for 50cc to 90cc pit bikes and ATVs. By increasing the tooth count, you allow your vehicle to reach much higher top speeds while reducing engine strain at cruising velocity. Built from high-strength, abrasion-resistant materials, it ensures every ride is smooth, efficient, and reliable.

Product Compatibility

Component Type Specification
Engine Displacement 50cc, 70cc, 90cc
Vehicle Types Dirt Pit Bikes, ATVs, 4-Wheelers, Mini Bikes
Chain Pitch 428 (Heavy Duty)
Shaft Fitment 20mm Countershaft
Common Brands TaoTao, SSR, Coolster, Apollo, Kazuma

Specifications

Feature Details
Tooth Count 19T (19 Teeth)
Inner Diameter 20mm (0.78")
Chain Style 428 Style
Material High-Strength Alloy Steel
Properties Abrasion & Corrosion Resistant

Key Features

  • Ultimate Top-Speed Optimization: The 19-tooth configuration is engineered for "gearing up," providing a significant boost in top-end velocity and making it ideal for open trail riding or road cruising.
  • Precise Tooth Engagement: Featuring an optimized tooth shape, this sprocket bites tightly into the 428 chain. This precise fit reduces "chain jump" and minimizes power loss, ensuring a more responsive and fun driving experience.
  • Extreme Durability: Manufactured from high-strength materials with excellent abrasion and corrosion resistance, this sprocket is built to maintain stable operation even in harsh off-road environments.
  • Smooth Power Transmission: The precision-machined tooth profile enhances the vehicle’s power transmission performance, leading to a quieter drivetrain and a more refined feel at high RPMs.
  • DIY-Friendly Installation: Designed with a compact and reasonable layout, the installation process is fast and simple. No complex tools or professional skills are required, allowing users to handle the replacement themselves with ease.
View full details

Fitment FAQ

Will this part fit my specific model and year?

This replacement part is intended for 50cc–90cc Pit Bike & ATV. It is best matched to original part number(s) 428-19T. Key physical/spec details from the product data include Tooth Count: 19T (19 Teeth), 19T (19 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 428-19T 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 428-19T, 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): 428-19T. Recheck listed specs such as Tooth Count: 19T (19 Teeth), 19T (19 Teeth), Inner Diameter: 20mm (0.78"). If any connector, mounting point, size, or year detail is different, confirm fitment before installation.