FD Mazda Rx7 Under Drive Pulley Set

Green Brothers FD Mazda Rx7 underdrive pulley set is NZ made from 6061 alloy, black anodizes and supplied with a quality Mitsuboshi 5PK belt 

Benefits include air pump delete, reduced coolant temps and a few extra HP. Suitable for both street and competition applications 

A grooved water pump pulley eliminates belt spillage 

Water pump overdrive is reduced from 1.3:1 to 1.01:1

Alternator overdrive is reduced from 2.2:1 to 1.7:1

Does not adversely affect alternator output at idle speed