guitar1234
Likes Dirt
I don't personally own a Giant Reign, but to all that do and can't mount a chainguide on it due to Giant being retarded and speccing a pressfit BB here might be a solution,well, hopefully anywayrange:
http://www.pinkbike.com/news/Pinkbike-Product-Picks-december-17-2011.html
http://www.pinkbike.com/news/Pinkbike-Product-Picks-december-17-2011.html