Blackburn Trakblock 3 Front Wheel Platform

Blackburn Trakblock 3 Front Wheel Platform. Front wheel platforms are handy devices for leveling and stablizing your bike when it's locked into your trainer. The beauty of Blackburn's TrakBlock 3 is all the options it offers. You can use it with the Mag 3 to level the bike, or with other Blackburn trainers to raise the handlebars to create a climbing workout. The Trakbloc 3 is made of heaty duty molded plastic that withstands countless trainer miles. Trakblock 3 accepts 700c, 650c and 26 wheels.