It is designed to allow the installation of the stock B3 bumper part even after the upgrade is fitted.
: Specifically recommended for "hard courses with large jumps," as it prevents the suspension mounts from flexing or breaking upon landing. Compatibility : Fits all various Tamiya DB01 chassis models. OP1037.mp4
The is a precision-engineered upgrade part designed to replace the standard plastic M3 front suspension mount found in Tamiya DB01 chassis kits (such as the Durga or Baldre). It is designed to allow the installation of