Most of the four groove Jackson Racing pulleys had a 0.8" offset, however a few of them had a 1" offset.
JB Performance Jackson Racing Honda Civic MP62 G4 supercharger gasket kit
1320 B series JRSC Jackson Racing supercharger Upper & Lower bracket B16 gsr si
1320 B series JRSC Jackson Racing supercharger upper bracket assembly B16 gsr si
1320 High-boost pulley 3 Inch B16 B18 Jackson Racing Supercharger b series BLACK
1320 D series JRSC Jackson Racing supercharger Tensioner bracket assembly D16
JRSC Jackson racing supercharger B series stepper pulley -SILVER FINISH
