JT Steel Rear Sprocket 42T Street SUZUKI GSX-R600 2001-2005 Steel Rear Sprocket O.E.M. Gearing: 16/45 Chain/Links: 520 Conversion Teeth:42 Using the latest generation of computer design and control metal cutting equipment maximum durability. Made from the finest C49 high carbon steel or 7075 T6 aluminum. Front sprockets are made from chromoly SCM420 steel alloy. All sprockets are heat-treated and hand-finished to meet or exceed the highest possible Grade standards.
