[coolhandcountry]

The 17.9 is the over all gear reduction of all the gears added up. diffs tranny spur and pinion. I run a 3 speed trans with the mech brake and had the reverse modul but it would not hold my motor. It is down at the moment for the dog bones are twisting around like pretzels. I need a few parts before it goes back to together. If you want the motor brake I would use the emaxx trans. It is a tough item with steel idlers in it. You can run a two speed as well for more versatile use.