19-tooth front sprocket, small sprocket, 20 mm hub bore, 420 specification. Gearbox for motorcycle engines, suitable for off-road vehicles, microcars and small-displacement conversions.--BIEMMEDUE

The GOOFIT 420-19T sprocket is a high-performance drive component specifically designed for small engines using 420 chains. With 19 teeth and a precise 20mm center bore, it fits perfectly on the output shafts of compatible motorcycles, ATVs, and minibikes. Precision forged and heat-treated from high-strength alloy steel, it offers excellent wear and impact resistance, improving drivetrain efficiency and reliability. It's the ideal choice for replacing worn parts or optimizing gear ratios. Key Features: Precise Specifications: Designed specifically for 420 chains (12.7mm pitch, 7.94mm roller diameter), the 19 teeth (19T) and 20mm center bore ensure precise fitment and smooth drivetrain operation. Optimized gear ratio: The 19 teeth provide more balanced acceleration and a higher top speed than sprockets with fewer teeth, making it ideal for everyday use and general upgrades on small-displacement vehicles. Superior durability: Made from high-quality alloy steel, this chain is case-hardened, tempered, and precision ground. It offers high surface hardness, extended wear resistance, and smooth, consistent operation. Reinforced construction: The reinforced tooth shape and chain foot design effectively resist chain slap, prevent breakage, and improve reliability in harsh road conditions. Wide compatibility: Specifically designed for various small vehicles with a 20 mm engine output shaft diameter and the use of a 420 chain. Specifications: Chain: 420; Number of teeth: 19; Center bore diameter: 20 mm; Mounting: Standard keyway or bolt-on.