No they are not adjustable.
They are Gen 1 Wheel bearings as opposed to the Gen 3 hub and bearing fitted to the S2 and beyond Aero so are replaceable at limited expense.

FYI
GEN 0 Wheel Bearing
pair of taper roller bearings, as Trad front stub axles

Gen 1 Wheel Bearing
Large diameter double row Ball bearing

Gen 2 Wheel bearing
Large diameter wheel bearing with Drive flange

Gen 3 Wheel bearing
Large diameter double row ball bearing in carrier, combined with hub assembly

http://www.skf.com/us/products/vehicle-a...kits/index.html

Simon @ SiFab.co.uk

Last edited by SimonH; 18/10/16 08:52 PM.
Simon @ Sifab.co.uk

Sifabtemporary@gmail.com