MPI DUAL BB GEAR BOX FOR SPEED 400Promax 400 7.2V motor with ACC347 gear box installed
New plastic gear for quiet operation
Gear Ratio: 2.5:1 installed, pinons for 2:1 & 3:1 included
Dual ball bearings
1.08" dia x 2.2" total length
6 mm prop. adapter included
Weight: 3.3 oz
