A topbox that big probably won't affect aerodynamics. The only thing I've ever ridden with that was big enough to affect the PCX's aerodynamics was a set of golf clubs.
Currently ride: Nothing right now - mostly mountain biking with my boys until they're old enough to ride Previously rides: 2011 Honda PCX 125, 2005 V-Strom DL650, 1974 Vespa Ciao, 2011 Honda PCX 170 (tons of mods - takegawa 170cc big bore kit, gears, etc), 1996 Honda Nighthawk 250, 1987 Honda Spree, 2000 KTM 125SX, 2003 Honda Silverwing, 2007 Genuine Buddy 125, 1998 Honda PC800, 2008 Buddy 125 (white), 2008 Buddy 125 (red), 2001 Honda Reflex, 1987 Honda Elite, 1988 Honda Spree, 2007 Yamaha Vino, 2007 Honda Metro, 2x 125cc pure-chinesium dirt bikes
maddiedog wrote:A topbox that big probably won't affect aerodynamics. The only thing I've ever ridden with that was big enough to affect the PCX's aerodynamics was a set of golf clubs.
Yep, no affect at all....never know it's back there....
Ridin' and Socializin' the Southeastern USA on a 2014 Honda FORZA 300 Scooter...45+ years of Riding averaging 30,000 miles per year...!!!