The FreedomZ features dual, Hydro-Gear ZT3100 (36", 48", 52") or ZT3400 (61") heavy-duty hydraulic transmissions with the following features:

cooling fan
spin-on oil filter
10cc pump in ZT3100
12cc pump in ZT3400
1" axle shaft on ZT3100
1-1/8" axle shaft on ZT3400
4 bolt wheel hub
charge pump design
internal relief valve
steel oil filter guard