Hi Everyone hoping someone can help me out here, I am restoring and modifying a Honda Shadow 2001 VT 750C, and wondering if someone can assist me here, I want to put a 21" front rim on, and need to know, if anyone has done this before and what is required. I believe that by doing this would throw the speedo out and, as I live in Melbourne western suburbs where would I get this re-calibrated. Thanks to anyone who could help me here.

Also would be chasing a Honda fury 21" rim