Driven Racing 420 Lightweight Steel Front Sprocket Kawasaki Z125 Pro Manufactured using the highest quality 45C steel available to guarantee unmatched quality and performance. Steel sprockets are heat-treated and quenched to provide maximum strength and durability. Dynamic black finish is achieved by using a proprietary electro-static plating process unique to Driven sprockets. Lowered milled surface on sprockets removes unnecessary weight without compromising strength and structural integrity. Features: One of the lightest 520 steel sprockets available today Designed using our proprietary EST Technology Performance and longevity all in one sprocket Attractive black zinc semi-gloss finish Lowered surface reduces unnecessary weight