Steel Front Sprockets:

• Made using SCM415 Chromoly steel alloy for all front sprockets
• Heat treated and hand finished to perfection
• Use a smaller front sprocket for more acceleration, or a larger front sprocket for higher top end speed (and lower RPM's at a set speed) at the expense of acceleration.
• DR-Z400 E and S models use a 14 tooth front sprocket from factory. DR-Z400SM uses a 15 tooth front sprocket from factory.

Steel Rear Sprockets:

• Made using 1045 High Carbon steel alloy for all rear sprockets
• Heat treated and hand finished to perfection
• Use a greater tooth rear sprocket for more acceleration, or a smaller number of teeth rear sprocket for higher top end speed (and lower RPM's at a set speed) at the expense of acceleration.
• DR-Z400E used 47 tooth from factory, DR-Z400S uses 44 tooth rear sprocket from factory and the DR-Z400SM used a 41 tooth.