yes its a 2001 fatboy , but i put 2007 fatboy wheels and a 200 tire mod to it, and used 2006 FXST swingarm and wheel pulley setup, had to change struts and fender when i did it , i have a belt drive so i went with a 34 trans thought it would be better for gearing but i miss the low end grunt and since its not a freeway bike i was going to go back to the 32 tooth trans , but with the custom fender the wheel is in perfect location centered under fender i want to keep it there , so going from a 34 to a 32 trans just need to see what size 20mm drive belt will give that to me, its 135 now so im thinking 133 just not sure Are you sure that a 135 tooth belt won't work for you? A 2006 ST shows a 135 tooth belt with the combo of 32 x 70 pulleys. , This is where a Gear Velocity Calculator comes in. It tells you how fast one gear turns when you know the speed or size of the other. You don’t need to do hard math or guess. Whether you’re fixing a bike, working on a machine, or just learning, this calculator makes gear speed clear and simple. What Is a Gear Velocity Calculator and Why You , How WAZIPOINT SYSTEM Utilizes Perfectly in Underground Cable Transmission Lines Excavation Equipment Performance in Urban Areas? While "WAZIPOINT" is likely a proprietary brand name for an integrated technology suite, the principles behind such a system are at the forefront of modern construction technology..