Beef up your truck by installing 2 more bevel gears in each of your Savage or Kyosho MP5 to 7 differentials. Hot Racing uses precision centerless grinding on these shafts to give you a degree of refinement with which no other kind of operation can match. These shafts give you a precision fit and hardness for longevity. If you like to Beef up your diff you will need: One SSAV0427 (4) Two HPI86032 (2) (Use 1, 000 to 10, 000 weight differential gear oil for off-road) silicone oil is used in gear differentials mainly used in off-road. It
