31" not a very popular tank

and thicker slipper plate keep consistent pressure across the surface of the slipper pads

Redesigned Front Spoiler

M-DRIVE Hex/Nut Driver Tool - 7mm

Threaded spring preload adjusters for fine-tuning vehicle ride height

PN Racing Mini-Z Spur Gear M0.5 41T for Gear Differential Fuzzballs 31" not a very popularDescription For replacement PN Racing Mini Z Precision Gear Differential Spur Gear Changing Spur Gear Ratio 1. Loosen Tension Nut to separate side gears. 2. Allow spider gear pins to recess into carrier. Depress with screw driver if necessary as shown by arrows. 3. Remove spur gear. 4. Installation is reverse of removal