My 2003 chopper has a 1.5" offset. When ever I would romp down on my chopper, the next day I would have a primary leak. So I would take the primary down and reseal the primary and put it back together. I did it, I had my mechanic do it a few times, I even took it to Dallas and had Strokers fix it. I finally had enough and looked at the open primary's. The 4" look so cool but, my leg angle would have chewed up my boot heals. With the 2.5" belt i ride just like I always have. My jeans never get caught, and those times it felt like a little tug on my jeans but that was it. I looked at the Primo, Baker and BDL drives. What sold me on the BDL with the Lock Up clutch was talking to a couple of guys who race Harley drag bikes. They loved the set up. They run the 4" belt and BDL said with my 107 S&S Super Sidewinder motor the 2.5" would handle my HP easily. The other nice thing is BDL is a lot less $$$$$$ than the Baker!