9 Tooth driver for 1.75" Arctic Cat / Yamaha driveshaft for those switching to the popular 2 ply 2.52" pitch tracks such as the Hacksaw, Ripsaw, and speed tracks among others. These drivers have antiratchet points as well as involute Points. The antiratchet points run in the clipped track windows and the involute bumps drive off of the four rows of rubber track bumps found in between the track windows.  These drivers are built very strong and feature a metal ring to assist in keeping them in place on the shaft.  They also feature a unique extrovert design for less rolling resistance and less chance of catching on the clips of the track. 
 
Compared to 10 tooth drivers, these provide approx .4" additional clearance at the front of the tunnel.  Great for additional traction product clearance and/or less windage.  The difference in radius can also be a benefit when swapping tracks and attempting to run a shorter track on your suspension.  On some chassis the reduced radius may allow the track to ride too close to the front arm cross shaft.  Check your installation to see if a carrier wheel may be required.
 
These are sold individually, you will need to two per snowmobile. If you have a Yamaha or Arctic Cat and your driveshaft is prior to the 1.75 Procross shaft these are NOT the correct drivers for your sled.  The drivers are built to order so expect approx. 2 weeks lead time before shipping.
 
Sold per each.