Blackburn Trak Block 3

Blackburn makes the Trackblock 3 because stacking old college textbooks or two by fours under your front wheel is just not pro. The Trackblock 3 levels and stabilizes your front wheel as you do a workout on your indoor trainer. It has three slots that are unique to different wheel diameters 700c, 650c, and 26in wheels. You'll be able to thrash yourself in front of the TV on those long winter nights, as the injection molded construction of the Trackblock 3 makes it virtually indestructible. Optimized for use with the Blackburn Trakstand Mag series of trainers to keep your bike level use with other trainers to raise bar height and simulate climbs