GPM Racing Traxxas X-Maxx, XRT Hardened Steel Drive Cups (Front/Rear) (STXM039-BK)

Product major function & usage:
The body of the cvd is designed 1.5mm thick, the shaft pin is produced 0.5mm thicker

Major advantages of upgrading to this product:
Compare with original joint, the outer diameter was upgraded from 17mm to 18mm to increase rear power transfer.