



JT Sprockets JTF558.15 Sprocket made of steel, designed for replacement or gearing changes on urban motorcycles, roadsters, and motocross machines. This standard 558 sprocket features 15 teeth with a pitch of 428, designed to achieve a good balance between acceleration and top speed depending on the chosen ratio.
Designed for the primary transmission of the motorcycle, this JT Sprockets sprocket easily integrates with compatible 428 drivetrains. Its design optimizes the weight/strength compromise for increased longevity of the sprocket-sprocket-chain assembly while remaining easy to install during maintenance or gearing modifications.
Examples of applications: YAMAHA YZ 85 LW BIG WHEELS 19/16 (2026), HONDA FORZA 750 (2025), KAWASAKI Z 125 (2024). Always check compatibility with your model before installation.