Sieg X3 Mill Gear Ratio Sets Pulley Material:Aluminum & Steel made out of the same

made out of the same gasket material used by most German OEMs

All (4) stock rubber bushings from Mopar are very soft

This retains the use of the stock spring

Its low profile design also helps since most of these engines have very little clearance to work on them

Cup bottom: 7

Sieg X3 Mill Gear Ratio Sets Pulley Material:Aluminum & Steel made out of the sameThese Gear Ratio Sets provides extra capability to the Sieg X3 and equivalent milling machines, such as the Grizzly G0463, These mills are very weak at low rpm and sometimes have trouble even turning consistently unless the rpm is over 400. In one configuration, this set acts as a higher ratio gear to boost torque from 0 700 RPM spindle speed, peaking at a 40% increase at 600 RPM. Flip the gears to run a much lower ratio to get a theoretical rpm limit