420-17T High-Speed Front Engine Sprocket (17mm) for 50cc–110cc Pit Bike & ATV

Product Overview

Experience a smoother ride and increased top-end velocity with the 420-17T High-Performance Front Sprocket. Engineered for the standard 17mm countershaft found on most small-displacement horizontal engines, this 17-tooth gear is the ideal choice for riders who want to "gear up." By increasing the tooth count, you reduce engine screaming at high speeds and gain a much higher cruising velocity. This sprocket is manufactured using precision processing technology to ensure a silent, efficient, and direct power transfer.

Product Compatibility

Component Type	Specification
Engine Displacement	50cc, 70cc, 90cc, 110cc
Vehicle Types	Dirt Pit Bikes, ATVs, Motorcycles, Mini Bikes
Chain Pitch	420
Shaft Fitment	17mm Countershaft
Gearing Change	High-Speed Upgrade (Replaces 10T, 12T, 14T)

Specifications

Feature	Details
Tooth Count	17T (17 Teeth)
Inner Diameter	17mm (0.67")
Mounting Hole Distance	30mm (1.20") center-to-center
Chain Size	420
Material	Hot-Treated High-Strength Steel
Installation	Direct Fit (Includes Retainer Kit)

Key Features

• High-Speed Gearing Optimization: The 17-tooth design significantly lowers engine RPM at high speeds, providing a higher top-end velocity and a more relaxed engine tone for trail or road cruising.
• Hot-Treated Durability: Crafted from steel subjected to advanced heat treatment, this sprocket features superior surface hardness that resists tooth "hooking" and wear over long-term use.
• Precision Transmission Technology: Utilizes modern processing techniques to ensure perfectly symmetrical teeth, resulting in a more silent drive system and reduced vibration compared to standard stamped sprockets.
• Complete "Direct Fit" Kit: Comes with all necessary accessories for a direct installation. There is no need for additional specialized tools—simply swap it with your existing 17mm sprocket.
• Rust and Wear Resistance: The steel construction is designed to withstand the harsh conditions of off-road riding, including exposure to mud, silt, and high-temperature operation.