Originally Posted by redondoaveb

Input shaft? Are you talking about the jackshaft on the sc side? If so, stock size is a 3.20. I got the 3.25 from 928 . The problem with changing the jackshaft pulley is that the stock one isn't a vortech style and has a different offset so if you put a vortech style (vortech or 928) then you need to add a spacer to the sc shaft in order to bring that pulley out far enough for the jackshaft and sc pulleys to line up. 928 makes a slotted spacer just for that purpose. The actual pulley on the sc I changed to a 2.85. I also had to change the idler pulley to a 3.00 in order to take up the belt slack.

That must have been a rush longboarding those roads. I couldn't even imagine doing Baldy Rd. though. It was a b!tch climbing it on my bike, there are some steep sections.