grow peds are smaller, i have a knowped, you can lower the bars..just buy a stem and some 16" bars and your set. there pretty heavy, especially with a grindplate, there actually really fast, they have bike bearings in them and the wheels are pretty durable..the fender brake on them sucks, i broke 3 and gave up on them so just ride completly brakeless...i havent ridden my knowped in like a year