Transmission Internal Gear: 18T,30T Input Gears ,36T Output Gear
This Is The Upgrade For Your Trx-4.
Bearings: 5*11*4mm (Inner Diameter: 5mm , Outer Diameter: 11mm,Thickness: 4mm)
Output Shaft Od: 5mm
Anodized Black For Durability, Corrosion Resistance, And Aesthetics
