Description
Are designed to provide dirt modified drivers with a winning advantage.
MBR101-0045 – MBR 450# Pull Spring
* use in slick & moderate track conditions, especially when hard tires are used.
MBR101-062 – MBR 620# Progressive Pull Spring
* use in slick & moderate track conditions when UMP, WISSOTA, AMRA, USMTS & USRA type tires are used.
MBR101-0077 – MBR 770# Dual Rate Pull Spring
* use in moderate & fast track conditions when UMP, WISSOTA, AMRA, USMTS & USRA type tires are used.
