Full races · Road racing · United States

Heartland Park Topeka 2011 - KART Series Kart Road Race (Unlimited / B-Stock class)

B-Stocks (b stock), Formula 125s, and 250s in the Unlimited class at Heartland Park Topeka in 2011. B-Stock is a laydown reclined driving position with two 100cc engines capable of speeds in the 140 range. No more than 125 mph at this track. Formula 125 is a 125cc shifter engine on a laydown chassis. 250 or Superkart is a 250cc engine on a standard sit up position chassis. Basically this class allows all the fastest classes to "run what you brung".