5mm thick. For 115mm dia. rear springs. NOT suitable for the early 105mm dia. springs.For use in conjunction with the AlfaStop rear spring to body spacer housings, item 1RS120 and 1RS155. This spacer ring (collar) can be further machined in order to give a finer adjustment of the ride height. The photos show the the adjustment ring alone, and the ring installed in the spacer 1RS155. Exclusively made in England for AlfaStop.
 
Part Name: Rear Spring To Body Spacer Housing Adjustment Ring, 5mm
AlfaStop Product Code: 1RS151
Original Alfa Romeo Part No: 
Model: Guilia 101 Series, Giulietta 750 & 101
Quantity Per Car: As Required