I have a spare 15 tooth (original 2.88 rear end gear) and 17 tooth (3.31 rear end?) Tiger speedometer gear that I will bring along to the event. Both are used, but in good shape. The 15 tooth is no longer available new and is very hard to find. Check your odometer accuracy on the way to the event. I found that one tooth up or down changed the odometer reading about 5% with a 2.88. I ended up with a 16 tooth for a 2.88 with 14″ 60 profile tires. Changing the speedo gear is a 15 min. job.