6-bolt pulley hub spacer .140" thick for the *new* VMP 10-rib for rear-feed superchargers:

VMP Gen3R, VMP Gen3, VMP Gen2R, VMP Gen2, VMP Gen1.   Roush superchargers must have the snout and hub machined to accept a VMP 10-rib pulley.

Spaces the supercharger pulley out .140", designed for the new VMP 10-rib kit and rear-feed Gen3R style superchargers (+1 rear +3 front over stock)

Provides for the correct supercharger pulley alignment when used in conjunction with:
ATI/VMP 20% OD *10-RIB* DAMPER FOR 2020+ GT500 5.2 L & 5.0 L
VMP-918078

And VMP 10-rib pulleys:
VMP-24-10-B through VMP-35-10-B in .100" increments