This is the optional EXOTEK Carbon Fiber B6.1/B6.1D LiPo Tabs and Cups Set. The finitely adjustable quick weight tuning battery hold system for the B6.1 T6.1 SC6.1 and B6, to adjust the battery quickly, forward or way back, with ease as track conditions call for it.
Securely cradles the battery in place for added chassis flex compared to taping the battery to the chassis.
Only 4.5gr vs the stock straps 9gr.
Easy yet secure battery hold in and removal.
Lower center of gravity and lighter than the stock strap set.