These springs have been made to improve the responsiveness of the cars, compared to the alternative CORE RC and Schumacher Big Bore Springs.
Core RC High Response Spring; Med Orange - 4.3 lb/in (pr) CR834
Core RC Hi Response TC Spring 3.5 - Grn/Yellow CR851
Core RC Hi Response TC Spring 2.6 - Black CR844
Core RC Hi Response TC Spring 3.3 - Pink CR850
Core RC Hi Response TC Spring 2.1 - Red CR841
Core RC Hi Response TC Spring Set - Med CR853
